./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product25.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_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/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_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/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_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/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 68864d90c2581c7e2b9a72172352bcf9279d03107788434bd4ac5af6cc5db51a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:28:33,327 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:28:33,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:28:33,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:28:33,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:28:33,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:28:33,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:28:33,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:28:33,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:28:33,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:28:33,369 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:28:33,371 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:28:33,371 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:28:33,372 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:28:33,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:28:33,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:28:33,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:28:33,377 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:28:33,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:28:33,381 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:28:33,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:28:33,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:28:33,386 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:28:33,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:28:33,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:28:33,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:28:33,390 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:28:33,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:28:33,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:28:33,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:28:33,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:28:33,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:28:33,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:28:33,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:28:33,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:28:33,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:28:33,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:28:33,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:28:33,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:28:33,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:28:33,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:28:33,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:28:33,415 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:28:33,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:28:33,416 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:28:33,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:28:33,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:28:33,416 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:28:33,417 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:28:33,417 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:28:33,417 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:28:33,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:28:33,417 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:28:33,418 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:28:33,418 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:28:33,418 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:28:33,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:28:33,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:28:33,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:28:33,418 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:28:33,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:28:33,418 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:28:33,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:28:33,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:28:33,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:28:33,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:28:33,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:28:33,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:28:33,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:28:33,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:28:33,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:28:33,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:28:33,427 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:28:33,427 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:28:33,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:28:33,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:28:33,428 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_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68864d90c2581c7e2b9a72172352bcf9279d03107788434bd4ac5af6cc5db51a [2021-12-07 00:28:33,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:28:33,617 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:28:33,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:28:33,620 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:28:33,620 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:28:33,621 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c [2021-12-07 00:28:33,665 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/data/9224bc4bc/d4f93d0c0f724c1cada5e0fe56c4d97c/FLAGc514e4cc3 [2021-12-07 00:28:34,118 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:28:34,118 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c [2021-12-07 00:28:34,133 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/data/9224bc4bc/d4f93d0c0f724c1cada5e0fe56c4d97c/FLAGc514e4cc3 [2021-12-07 00:28:34,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/data/9224bc4bc/d4f93d0c0f724c1cada5e0fe56c4d97c [2021-12-07 00:28:34,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:28:34,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:28:34,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:28:34,651 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:28:34,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:28:34,654 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:28:34" (1/1) ... [2021-12-07 00:28:34,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2853514d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:34, skipping insertion in model container [2021-12-07 00:28:34,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:28:34" (1/1) ... [2021-12-07 00:28:34,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:28:34,700 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:28:34,931 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_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c[23488,23501] [2021-12-07 00:28:35,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:28:35,042 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:28:35,089 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_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/sv-benchmarks/c/product-lines/elevator_spec9_product25.cil.c[23488,23501] [2021-12-07 00:28:35,138 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:28:35,164 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:28:35,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:35 WrapperNode [2021-12-07 00:28:35,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:28:35,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:28:35,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:28:35,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:28:35,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:35" (1/1) ... [2021-12-07 00:28:35,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:35" (1/1) ... [2021-12-07 00:28:35,245 INFO L137 Inliner]: procedures = 91, calls = 331, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 805 [2021-12-07 00:28:35,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:28:35,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:28:35,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:28:35,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:28:35,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:35" (1/1) ... [2021-12-07 00:28:35,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:35" (1/1) ... [2021-12-07 00:28:35,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:35" (1/1) ... [2021-12-07 00:28:35,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:35" (1/1) ... [2021-12-07 00:28:35,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:35" (1/1) ... [2021-12-07 00:28:35,300 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:35" (1/1) ... [2021-12-07 00:28:35,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:35" (1/1) ... [2021-12-07 00:28:35,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:28:35,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:28:35,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:28:35,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:28:35,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:35" (1/1) ... [2021-12-07 00:28:35,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:28:35,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:28:35,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:28:35,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:28:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:28:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-07 00:28:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-07 00:28:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-07 00:28:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-07 00:28:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-07 00:28:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-07 00:28:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-07 00:28:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-07 00:28:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-07 00:28:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-07 00:28:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-07 00:28:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-07 00:28:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-07 00:28:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-07 00:28:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-07 00:28:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-07 00:28:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-07 00:28:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-07 00:28:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-07 00:28:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-07 00:28:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-07 00:28:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-07 00:28:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-07 00:28:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-07 00:28:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-07 00:28:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-07 00:28:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-07 00:28:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-07 00:28:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-07 00:28:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-07 00:28:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-07 00:28:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-07 00:28:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2021-12-07 00:28:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2021-12-07 00:28:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:28:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-07 00:28:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-07 00:28:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-07 00:28:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-07 00:28:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-07 00:28:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-07 00:28:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:28:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:28:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-07 00:28:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-07 00:28:35,477 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:28:35,478 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:28:36,119 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:28:36,132 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:28:36,132 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 00:28:36,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:28:36 BoogieIcfgContainer [2021-12-07 00:28:36,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:28:36,137 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:28:36,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:28:36,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:28:36,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:28:34" (1/3) ... [2021-12-07 00:28:36,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df51e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:28:36, skipping insertion in model container [2021-12-07 00:28:36,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:28:35" (2/3) ... [2021-12-07 00:28:36,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@df51e6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:28:36, skipping insertion in model container [2021-12-07 00:28:36,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:28:36" (3/3) ... [2021-12-07 00:28:36,144 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product25.cil.c [2021-12-07 00:28:36,149 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:28:36,149 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:28:36,188 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:28:36,194 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 [2021-12-07 00:28:36,194 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:28:36,224 INFO L276 IsEmpty]: Start isEmpty. Operand has 532 states, 424 states have (on average 1.7146226415094339) internal successors, (727), 445 states have internal predecessors, (727), 85 states have call successors, (85), 21 states have call predecessors, (85), 21 states have return successors, (85), 79 states have call predecessors, (85), 85 states have call successors, (85) [2021-12-07 00:28:36,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-07 00:28:36,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:28:36,243 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] [2021-12-07 00:28:36,244 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:28:36,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:28:36,248 INFO L85 PathProgramCache]: Analyzing trace with hash -681820971, now seen corresponding path program 1 times [2021-12-07 00:28:36,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:28:36,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861907603] [2021-12-07 00:28:36,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:28:36,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:28:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:36,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:28:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:36,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:28:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:36,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-07 00:28:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:36,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-07 00:28:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:36,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:28:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:36,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:28:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:36,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-07 00:28:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:36,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-07 00:28:36,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:36,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:28:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:28:36,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:28:36,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861907603] [2021-12-07 00:28:36,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861907603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:28:36,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:28:36,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:28:36,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637574234] [2021-12-07 00:28:36,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:28:36,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:28:36,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:28:36,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:28:36,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:28:36,908 INFO L87 Difference]: Start difference. First operand has 532 states, 424 states have (on average 1.7146226415094339) internal successors, (727), 445 states have internal predecessors, (727), 85 states have call successors, (85), 21 states have call predecessors, (85), 21 states have return successors, (85), 79 states have call predecessors, (85), 85 states have call successors, (85) Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-07 00:28:42,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:28:42,434 INFO L93 Difference]: Finished difference Result 1464 states and 2544 transitions. [2021-12-07 00:28:42,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:28:42,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 76 [2021-12-07 00:28:42,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:28:42,456 INFO L225 Difference]: With dead ends: 1464 [2021-12-07 00:28:42,456 INFO L226 Difference]: Without dead ends: 944 [2021-12-07 00:28:42,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:28:42,468 INFO L933 BasicCegarLoop]: 914 mSDtfsCounter, 1439 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 4297 mSolverCounterSat, 682 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 3114 SdHoareTripleChecker+Invalid, 4979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 682 IncrementalHoareTripleChecker+Valid, 4297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:28:42,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1473 Valid, 3114 Invalid, 4979 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [682 Valid, 4297 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-07 00:28:42,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2021-12-07 00:28:42,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 526. [2021-12-07 00:28:42,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 420 states have (on average 1.707142857142857) internal successors, (717), 439 states have internal predecessors, (717), 85 states have call successors, (85), 21 states have call predecessors, (85), 20 states have return successors, (80), 78 states have call predecessors, (80), 80 states have call successors, (80) [2021-12-07 00:28:42,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 882 transitions. [2021-12-07 00:28:42,648 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 882 transitions. Word has length 76 [2021-12-07 00:28:42,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:28:42,648 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 882 transitions. [2021-12-07 00:28:42,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-07 00:28:42,649 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 882 transitions. [2021-12-07 00:28:42,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-07 00:28:42,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:28:42,656 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] [2021-12-07 00:28:42,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 00:28:42,656 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:28:42,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:28:42,657 INFO L85 PathProgramCache]: Analyzing trace with hash 620960083, now seen corresponding path program 1 times [2021-12-07 00:28:42,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:28:42,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517092202] [2021-12-07 00:28:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:28:42,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:28:42,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:42,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:28:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:42,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:28:42,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:42,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:28:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:42,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:28:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:28:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:42,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:28:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:42,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:28:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:42,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:28:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:42,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-07 00:28:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:42,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:28:42,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:28:42,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517092202] [2021-12-07 00:28:42,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517092202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:28:42,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:28:42,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:28:42,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223341950] [2021-12-07 00:28:42,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:28:42,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:28:42,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:28:42,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:28:42,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:28:42,968 INFO L87 Difference]: Start difference. First operand 526 states and 882 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-07 00:28:47,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:28:47,049 INFO L93 Difference]: Finished difference Result 1299 states and 2213 transitions. [2021-12-07 00:28:47,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:28:47,050 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2021-12-07 00:28:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:28:47,055 INFO L225 Difference]: With dead ends: 1299 [2021-12-07 00:28:47,056 INFO L226 Difference]: Without dead ends: 791 [2021-12-07 00:28:47,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:28:47,059 INFO L933 BasicCegarLoop]: 934 mSDtfsCounter, 1839 mSDsluCounter, 2761 mSDsCounter, 0 mSdLazyCounter, 4483 mSolverCounterSat, 546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1901 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 5029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 546 IncrementalHoareTripleChecker+Valid, 4483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:28:47,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1901 Valid, 3695 Invalid, 5029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [546 Valid, 4483 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-07 00:28:47,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2021-12-07 00:28:47,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 530. [2021-12-07 00:28:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 423 states have (on average 1.6997635933806146) internal successors, (719), 442 states have internal predecessors, (719), 85 states have call successors, (85), 21 states have call predecessors, (85), 21 states have return successors, (82), 79 states have call predecessors, (82), 80 states have call successors, (82) [2021-12-07 00:28:47,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 886 transitions. [2021-12-07 00:28:47,113 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 886 transitions. Word has length 82 [2021-12-07 00:28:47,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:28:47,114 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 886 transitions. [2021-12-07 00:28:47,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-07 00:28:47,114 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 886 transitions. [2021-12-07 00:28:47,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-07 00:28:47,117 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:28:47,117 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] [2021-12-07 00:28:47,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 00:28:47,117 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:28:47,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:28:47,118 INFO L85 PathProgramCache]: Analyzing trace with hash 479075021, now seen corresponding path program 1 times [2021-12-07 00:28:47,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:28:47,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403154041] [2021-12-07 00:28:47,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:28:47,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:28:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:28:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:47,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:28:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:47,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-07 00:28:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:47,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-07 00:28:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:47,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:28:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:47,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:28:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:47,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:28:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:47,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:28:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:47,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:28:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:47,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:28:47,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:28:47,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403154041] [2021-12-07 00:28:47,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403154041] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:28:47,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:28:47,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-07 00:28:47,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637105969] [2021-12-07 00:28:47,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:28:47,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-07 00:28:47,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:28:47,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-07 00:28:47,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:28:47,390 INFO L87 Difference]: Start difference. First operand 530 states and 886 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-07 00:28:57,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:28:57,444 INFO L93 Difference]: Finished difference Result 2420 states and 4264 transitions. [2021-12-07 00:28:57,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-12-07 00:28:57,444 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 87 [2021-12-07 00:28:57,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:28:57,458 INFO L225 Difference]: With dead ends: 2420 [2021-12-07 00:28:57,458 INFO L226 Difference]: Without dead ends: 1908 [2021-12-07 00:28:57,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2021-12-07 00:28:57,464 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 2956 mSDsluCounter, 3576 mSDsCounter, 0 mSdLazyCounter, 8289 mSolverCounterSat, 1229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3026 SdHoareTripleChecker+Valid, 4583 SdHoareTripleChecker+Invalid, 9518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1229 IncrementalHoareTripleChecker+Valid, 8289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:28:57,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3026 Valid, 4583 Invalid, 9518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1229 Valid, 8289 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2021-12-07 00:28:57,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2021-12-07 00:28:57,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1375. [2021-12-07 00:28:57,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1091 states have (on average 1.6608615948670944) internal successors, (1812), 1138 states have internal predecessors, (1812), 224 states have call successors, (224), 56 states have call predecessors, (224), 59 states have return successors, (258), 216 states have call predecessors, (258), 219 states have call successors, (258) [2021-12-07 00:28:57,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 2294 transitions. [2021-12-07 00:28:57,643 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 2294 transitions. Word has length 87 [2021-12-07 00:28:57,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:28:57,644 INFO L470 AbstractCegarLoop]: Abstraction has 1375 states and 2294 transitions. [2021-12-07 00:28:57,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-07 00:28:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 2294 transitions. [2021-12-07 00:28:57,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-07 00:28:57,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:28:57,647 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] [2021-12-07 00:28:57,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 00:28:57,648 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:28:57,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:28:57,648 INFO L85 PathProgramCache]: Analyzing trace with hash -245229541, now seen corresponding path program 1 times [2021-12-07 00:28:57,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:28:57,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340996408] [2021-12-07 00:28:57,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:28:57,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:28:57,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:57,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:28:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:57,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:28:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:57,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-07 00:28:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:57,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:28:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:57,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:28:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:57,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:28:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:57,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:28:57,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:57,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-07 00:28:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:57,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:28:57,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:57,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-07 00:28:57,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:28:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 00:28:57,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:28:57,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340996408] [2021-12-07 00:28:57,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340996408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:28:57,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:28:57,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-07 00:28:57,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445205337] [2021-12-07 00:28:57,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:28:57,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-07 00:28:57,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:28:57,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-07 00:28:57,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:28:57,960 INFO L87 Difference]: Start difference. First operand 1375 states and 2294 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-07 00:29:05,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:05,726 INFO L93 Difference]: Finished difference Result 3513 states and 6016 transitions. [2021-12-07 00:29:05,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-07 00:29:05,726 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) Word has length 96 [2021-12-07 00:29:05,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:05,738 INFO L225 Difference]: With dead ends: 3513 [2021-12-07 00:29:05,738 INFO L226 Difference]: Without dead ends: 1982 [2021-12-07 00:29:05,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2021-12-07 00:29:05,746 INFO L933 BasicCegarLoop]: 896 mSDtfsCounter, 4132 mSDsluCounter, 3962 mSDsCounter, 0 mSdLazyCounter, 8162 mSolverCounterSat, 1106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4187 SdHoareTripleChecker+Valid, 4858 SdHoareTripleChecker+Invalid, 9268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1106 IncrementalHoareTripleChecker+Valid, 8162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:05,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4187 Valid, 4858 Invalid, 9268 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1106 Valid, 8162 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2021-12-07 00:29:05,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2021-12-07 00:29:05,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1450. [2021-12-07 00:29:05,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1149 states have (on average 1.6309834638816363) internal successors, (1874), 1198 states have internal predecessors, (1874), 236 states have call successors, (236), 61 states have call predecessors, (236), 64 states have return successors, (279), 226 states have call predecessors, (279), 231 states have call successors, (279) [2021-12-07 00:29:05,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2389 transitions. [2021-12-07 00:29:05,934 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2389 transitions. Word has length 96 [2021-12-07 00:29:05,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:05,935 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 2389 transitions. [2021-12-07 00:29:05,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-07 00:29:05,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2389 transitions. [2021-12-07 00:29:05,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-07 00:29:05,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:05,946 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] [2021-12-07 00:29:05,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 00:29:05,946 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:05,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:05,947 INFO L85 PathProgramCache]: Analyzing trace with hash -54702925, now seen corresponding path program 1 times [2021-12-07 00:29:05,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:05,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205932299] [2021-12-07 00:29:05,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:05,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:06,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:06,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-07 00:29:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:06,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-07 00:29:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:06,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:06,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:06,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:06,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:29:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:06,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:29:06,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:06,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:29:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:06,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:29:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:06,195 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:29:06,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:06,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205932299] [2021-12-07 00:29:06,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205932299] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:06,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:06,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:29:06,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070156575] [2021-12-07 00:29:06,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:06,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:29:06,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:06,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:29:06,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:29:06,197 INFO L87 Difference]: Start difference. First operand 1450 states and 2389 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:29:09,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:09,412 INFO L93 Difference]: Finished difference Result 3392 states and 5718 transitions. [2021-12-07 00:29:09,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:29:09,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2021-12-07 00:29:09,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:09,423 INFO L225 Difference]: With dead ends: 3392 [2021-12-07 00:29:09,423 INFO L226 Difference]: Without dead ends: 1960 [2021-12-07 00:29:09,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:29:09,429 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 1759 mSDsluCounter, 1212 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 2677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:09,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1823 Valid, 2098 Invalid, 2677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [519 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-07 00:29:09,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1960 states. [2021-12-07 00:29:09,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1960 to 1450. [2021-12-07 00:29:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1149 states have (on average 1.630113141862489) internal successors, (1873), 1198 states have internal predecessors, (1873), 236 states have call successors, (236), 61 states have call predecessors, (236), 64 states have return successors, (279), 226 states have call predecessors, (279), 231 states have call successors, (279) [2021-12-07 00:29:09,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2388 transitions. [2021-12-07 00:29:09,601 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2388 transitions. Word has length 99 [2021-12-07 00:29:09,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:09,602 INFO L470 AbstractCegarLoop]: Abstraction has 1450 states and 2388 transitions. [2021-12-07 00:29:09,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:29:09,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2388 transitions. [2021-12-07 00:29:09,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-07 00:29:09,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:09,605 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] [2021-12-07 00:29:09,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-07 00:29:09,605 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:09,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:09,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1292774038, now seen corresponding path program 1 times [2021-12-07 00:29:09,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:09,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788957872] [2021-12-07 00:29:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:09,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:09,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:29:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:29:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:29:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:29:09,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:29:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:29:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:09,891 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:29:09,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:09,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788957872] [2021-12-07 00:29:09,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788957872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:09,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:09,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-07 00:29:09,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464248975] [2021-12-07 00:29:09,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:09,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:29:09,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:09,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:29:09,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:29:09,893 INFO L87 Difference]: Start difference. First operand 1450 states and 2388 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:29:14,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:14,562 INFO L93 Difference]: Finished difference Result 3472 states and 5951 transitions. [2021-12-07 00:29:14,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-07 00:29:14,563 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 100 [2021-12-07 00:29:14,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:14,576 INFO L225 Difference]: With dead ends: 3472 [2021-12-07 00:29:14,576 INFO L226 Difference]: Without dead ends: 2080 [2021-12-07 00:29:14,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:29:14,582 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 2032 mSDsluCounter, 3828 mSDsCounter, 0 mSdLazyCounter, 5717 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2089 SdHoareTripleChecker+Valid, 4707 SdHoareTripleChecker+Invalid, 6381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 5717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:14,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2089 Valid, 4707 Invalid, 6381 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [664 Valid, 5717 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-07 00:29:14,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2021-12-07 00:29:14,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 1474. [2021-12-07 00:29:14,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1161 states have (on average 1.6192937123169682) internal successors, (1880), 1218 states have internal predecessors, (1880), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-07 00:29:14,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2431 transitions. [2021-12-07 00:29:14,757 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2431 transitions. Word has length 100 [2021-12-07 00:29:14,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:14,757 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 2431 transitions. [2021-12-07 00:29:14,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:29:14,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2431 transitions. [2021-12-07 00:29:14,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-07 00:29:14,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:14,761 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] [2021-12-07 00:29:14,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:29:14,761 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:14,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:14,761 INFO L85 PathProgramCache]: Analyzing trace with hash 271876460, now seen corresponding path program 1 times [2021-12-07 00:29:14,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:14,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813395558] [2021-12-07 00:29:14,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:14,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:14,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:14,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:14,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:14,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:29:14,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:14,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 00:29:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:14,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:14,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:14,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:14,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:29:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:14,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:29:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:15,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:29:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:15,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:29:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:15,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:29:15,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:15,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813395558] [2021-12-07 00:29:15,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813395558] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:15,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:15,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:29:15,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224805640] [2021-12-07 00:29:15,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:15,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:29:15,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:15,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:29:15,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:29:15,016 INFO L87 Difference]: Start difference. First operand 1474 states and 2431 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:29:18,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:18,145 INFO L93 Difference]: Finished difference Result 3408 states and 5773 transitions. [2021-12-07 00:29:18,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:29:18,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2021-12-07 00:29:18,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:18,158 INFO L225 Difference]: With dead ends: 3408 [2021-12-07 00:29:18,158 INFO L226 Difference]: Without dead ends: 1992 [2021-12-07 00:29:18,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:29:18,164 INFO L933 BasicCegarLoop]: 840 mSDtfsCounter, 1386 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 2151 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 2585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 2151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:18,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1450 Valid, 2113 Invalid, 2585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 2151 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-07 00:29:18,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2021-12-07 00:29:18,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1474. [2021-12-07 00:29:18,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1161 states have (on average 1.6149870801033592) internal successors, (1875), 1218 states have internal predecessors, (1875), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-07 00:29:18,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2426 transitions. [2021-12-07 00:29:18,346 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2426 transitions. Word has length 101 [2021-12-07 00:29:18,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:18,346 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 2426 transitions. [2021-12-07 00:29:18,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:29:18,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2426 transitions. [2021-12-07 00:29:18,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-07 00:29:18,349 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:18,349 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] [2021-12-07 00:29:18,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:29:18,349 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:18,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:18,350 INFO L85 PathProgramCache]: Analyzing trace with hash -186141934, now seen corresponding path program 1 times [2021-12-07 00:29:18,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:18,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763197728] [2021-12-07 00:29:18,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:18,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:18,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:18,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:18,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:29:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:18,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-07 00:29:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:18,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:18,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:18,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:18,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:18,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:29:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:18,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:29:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:18,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:29:18,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:18,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:29:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:18,586 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:29:18,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:18,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763197728] [2021-12-07 00:29:18,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763197728] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:18,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:18,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:29:18,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534452629] [2021-12-07 00:29:18,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:18,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:29:18,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:18,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:29:18,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:29:18,588 INFO L87 Difference]: Start difference. First operand 1474 states and 2426 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:29:22,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:22,216 INFO L93 Difference]: Finished difference Result 3408 states and 5768 transitions. [2021-12-07 00:29:22,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:29:22,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 102 [2021-12-07 00:29:22,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:22,229 INFO L225 Difference]: With dead ends: 3408 [2021-12-07 00:29:22,229 INFO L226 Difference]: Without dead ends: 1992 [2021-12-07 00:29:22,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:29:22,237 INFO L933 BasicCegarLoop]: 840 mSDtfsCounter, 965 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 292 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 2620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:22,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1029 Valid, 2179 Invalid, 2620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-07 00:29:22,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2021-12-07 00:29:22,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1474. [2021-12-07 00:29:22,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1161 states have (on average 1.6106804478897503) internal successors, (1870), 1218 states have internal predecessors, (1870), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-07 00:29:22,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2421 transitions. [2021-12-07 00:29:22,432 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2421 transitions. Word has length 102 [2021-12-07 00:29:22,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:22,432 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 2421 transitions. [2021-12-07 00:29:22,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:29:22,432 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2421 transitions. [2021-12-07 00:29:22,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-07 00:29:22,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:22,435 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] [2021-12-07 00:29:22,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:29:22,435 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:22,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:22,435 INFO L85 PathProgramCache]: Analyzing trace with hash -250701561, now seen corresponding path program 1 times [2021-12-07 00:29:22,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:22,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327013436] [2021-12-07 00:29:22,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:22,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:22,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:22,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:22,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:29:22,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:22,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:29:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:22,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:22,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:22,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:22,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:29:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:22,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:29:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:22,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:29:22,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:22,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:29:22,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:29:22,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:22,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327013436] [2021-12-07 00:29:22,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327013436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:22,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:22,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:29:22,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924033413] [2021-12-07 00:29:22,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:22,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:29:22,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:22,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:29:22,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:29:22,662 INFO L87 Difference]: Start difference. First operand 1474 states and 2421 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:29:26,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:26,146 INFO L93 Difference]: Finished difference Result 3408 states and 5763 transitions. [2021-12-07 00:29:26,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:29:26,146 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2021-12-07 00:29:26,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:26,157 INFO L225 Difference]: With dead ends: 3408 [2021-12-07 00:29:26,157 INFO L226 Difference]: Without dead ends: 1992 [2021-12-07 00:29:26,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:29:26,163 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 980 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 2575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:26,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 2178 Invalid, 2575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-07 00:29:26,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2021-12-07 00:29:26,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1474. [2021-12-07 00:29:26,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1161 states have (on average 1.6063738156761413) internal successors, (1865), 1218 states have internal predecessors, (1865), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-07 00:29:26,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2416 transitions. [2021-12-07 00:29:26,345 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2416 transitions. Word has length 103 [2021-12-07 00:29:26,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:26,345 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 2416 transitions. [2021-12-07 00:29:26,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:29:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2416 transitions. [2021-12-07 00:29:26,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-07 00:29:26,348 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:26,348 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] [2021-12-07 00:29:26,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:29:26,348 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:26,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:26,349 INFO L85 PathProgramCache]: Analyzing trace with hash 288097926, now seen corresponding path program 1 times [2021-12-07 00:29:26,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:26,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530060160] [2021-12-07 00:29:26,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:26,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:26,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:26,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:26,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:26,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:29:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:26,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-07 00:29:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:26,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:26,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:26,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:26,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:26,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:26,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:29:26,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:26,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:29:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:26,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:29:26,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:26,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:29:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:26,581 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:29:26,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:26,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530060160] [2021-12-07 00:29:26,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530060160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:26,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:26,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:29:26,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702020802] [2021-12-07 00:29:26,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:26,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:29:26,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:26,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:29:26,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:29:26,583 INFO L87 Difference]: Start difference. First operand 1474 states and 2416 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:29:30,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:30,553 INFO L93 Difference]: Finished difference Result 3431 states and 5792 transitions. [2021-12-07 00:29:30,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:29:30,554 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 103 [2021-12-07 00:29:30,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:30,565 INFO L225 Difference]: With dead ends: 3431 [2021-12-07 00:29:30,565 INFO L226 Difference]: Without dead ends: 2021 [2021-12-07 00:29:30,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:29:30,571 INFO L933 BasicCegarLoop]: 849 mSDtfsCounter, 1825 mSDsluCounter, 2601 mSDsCounter, 0 mSdLazyCounter, 4211 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 3450 SdHoareTripleChecker+Invalid, 4756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 4211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:30,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1890 Valid, 3450 Invalid, 4756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 4211 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-07 00:29:30,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2021-12-07 00:29:30,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1476. [2021-12-07 00:29:30,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1163 states have (on average 1.6053310404127257) internal successors, (1867), 1220 states have internal predecessors, (1867), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-07 00:29:30,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2418 transitions. [2021-12-07 00:29:30,757 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2418 transitions. Word has length 103 [2021-12-07 00:29:30,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:30,757 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 2418 transitions. [2021-12-07 00:29:30,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:29:30,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2418 transitions. [2021-12-07 00:29:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-07 00:29:30,759 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:30,759 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] [2021-12-07 00:29:30,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-07 00:29:30,760 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:30,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:30,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1002941299, now seen corresponding path program 1 times [2021-12-07 00:29:30,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:30,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639617221] [2021-12-07 00:29:30,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:30,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:30,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:30,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:30,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:29:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:30,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:29:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:30,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:30,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:30,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:30,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:30,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:29:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:30,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:29:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:30,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:29:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:30,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:29:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:29:30,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:30,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639617221] [2021-12-07 00:29:30,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639617221] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:30,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:30,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:29:30,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076605254] [2021-12-07 00:29:30,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:30,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:29:30,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:30,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:29:30,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:29:30,973 INFO L87 Difference]: Start difference. First operand 1476 states and 2418 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:29:34,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:34,162 INFO L93 Difference]: Finished difference Result 3414 states and 5764 transitions. [2021-12-07 00:29:34,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:29:34,163 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2021-12-07 00:29:34,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:34,174 INFO L225 Difference]: With dead ends: 3414 [2021-12-07 00:29:34,174 INFO L226 Difference]: Without dead ends: 1996 [2021-12-07 00:29:34,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:29:34,179 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 1814 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1878 SdHoareTripleChecker+Valid, 2065 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:34,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1878 Valid, 2065 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-07 00:29:34,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1996 states. [2021-12-07 00:29:34,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1996 to 1476. [2021-12-07 00:29:34,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1476 states, 1163 states have (on average 1.6010318142734308) internal successors, (1862), 1220 states have internal predecessors, (1862), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-07 00:29:34,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1476 states to 1476 states and 2413 transitions. [2021-12-07 00:29:34,369 INFO L78 Accepts]: Start accepts. Automaton has 1476 states and 2413 transitions. Word has length 104 [2021-12-07 00:29:34,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:34,369 INFO L470 AbstractCegarLoop]: Abstraction has 1476 states and 2413 transitions. [2021-12-07 00:29:34,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:29:34,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1476 states and 2413 transitions. [2021-12-07 00:29:34,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-07 00:29:34,371 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:34,371 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] [2021-12-07 00:29:34,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 00:29:34,372 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:34,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:34,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1927738160, now seen corresponding path program 1 times [2021-12-07 00:29:34,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:34,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453629621] [2021-12-07 00:29:34,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:34,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:34,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:34,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:34,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:34,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:29:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:34,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:29:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:34,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:34,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:34,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:34,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:34,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:29:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:34,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:29:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:34,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:29:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:34,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:29:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:29:34,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:34,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453629621] [2021-12-07 00:29:34,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453629621] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:34,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:34,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:29:34,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722970317] [2021-12-07 00:29:34,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:34,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:29:34,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:34,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:29:34,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:29:34,603 INFO L87 Difference]: Start difference. First operand 1476 states and 2413 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:29:38,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:38,743 INFO L93 Difference]: Finished difference Result 3435 states and 5789 transitions. [2021-12-07 00:29:38,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:29:38,743 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2021-12-07 00:29:38,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:38,754 INFO L225 Difference]: With dead ends: 3435 [2021-12-07 00:29:38,755 INFO L226 Difference]: Without dead ends: 2025 [2021-12-07 00:29:38,759 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:29:38,760 INFO L933 BasicCegarLoop]: 851 mSDtfsCounter, 1407 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 4215 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 4622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 4215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:38,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1472 Valid, 3533 Invalid, 4622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 4215 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-07 00:29:38,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2025 states. [2021-12-07 00:29:38,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2025 to 1479. [2021-12-07 00:29:38,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1166 states have (on average 1.5994854202401372) internal successors, (1865), 1223 states have internal predecessors, (1865), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-07 00:29:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2416 transitions. [2021-12-07 00:29:38,951 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2416 transitions. Word has length 104 [2021-12-07 00:29:38,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:38,951 INFO L470 AbstractCegarLoop]: Abstraction has 1479 states and 2416 transitions. [2021-12-07 00:29:38,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:29:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2416 transitions. [2021-12-07 00:29:38,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-07 00:29:38,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:38,953 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] [2021-12-07 00:29:38,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 00:29:38,954 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:38,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:38,954 INFO L85 PathProgramCache]: Analyzing trace with hash 619202400, now seen corresponding path program 1 times [2021-12-07 00:29:38,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:38,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863848624] [2021-12-07 00:29:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:38,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:29:39,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:29:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:39,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:29:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:29:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:29:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:29:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:29:39,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:39,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863848624] [2021-12-07 00:29:39,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863848624] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:39,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:39,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:29:39,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085688423] [2021-12-07 00:29:39,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:39,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:29:39,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:39,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:29:39,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:29:39,170 INFO L87 Difference]: Start difference. First operand 1479 states and 2416 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:29:42,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:42,697 INFO L93 Difference]: Finished difference Result 3463 states and 5818 transitions. [2021-12-07 00:29:42,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-07 00:29:42,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2021-12-07 00:29:42,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:42,708 INFO L225 Difference]: With dead ends: 3463 [2021-12-07 00:29:42,708 INFO L226 Difference]: Without dead ends: 2002 [2021-12-07 00:29:42,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:29:42,714 INFO L933 BasicCegarLoop]: 863 mSDtfsCounter, 894 mSDsluCounter, 1352 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 2523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:42,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [958 Valid, 2215 Invalid, 2523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-07 00:29:42,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2002 states. [2021-12-07 00:29:42,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2002 to 1479. [2021-12-07 00:29:42,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1479 states, 1166 states have (on average 1.5986277873070327) internal successors, (1864), 1223 states have internal predecessors, (1864), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-07 00:29:42,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2415 transitions. [2021-12-07 00:29:42,907 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2415 transitions. Word has length 105 [2021-12-07 00:29:42,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:42,908 INFO L470 AbstractCegarLoop]: Abstraction has 1479 states and 2415 transitions. [2021-12-07 00:29:42,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:29:42,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2415 transitions. [2021-12-07 00:29:42,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-07 00:29:42,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:42,910 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] [2021-12-07 00:29:42,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 00:29:42,910 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:42,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:42,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1030934399, now seen corresponding path program 1 times [2021-12-07 00:29:42,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:42,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529734913] [2021-12-07 00:29:42,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:42,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:42,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:42,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:42,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:29:42,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:29:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:29:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:29:43,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:29:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:29:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:43,130 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:29:43,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:43,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529734913] [2021-12-07 00:29:43,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529734913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:43,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:43,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-07 00:29:43,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808001589] [2021-12-07 00:29:43,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:43,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:29:43,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:43,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:29:43,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:29:43,131 INFO L87 Difference]: Start difference. First operand 1479 states and 2415 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:29:47,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:47,301 INFO L93 Difference]: Finished difference Result 3423 states and 5768 transitions. [2021-12-07 00:29:47,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:29:47,301 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2021-12-07 00:29:47,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:47,309 INFO L225 Difference]: With dead ends: 3423 [2021-12-07 00:29:47,309 INFO L226 Difference]: Without dead ends: 1992 [2021-12-07 00:29:47,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2021-12-07 00:29:47,313 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 1438 mSDsluCounter, 3568 mSDsCounter, 0 mSdLazyCounter, 5635 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 4432 SdHoareTripleChecker+Invalid, 6023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 5635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:47,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1502 Valid, 4432 Invalid, 6023 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [388 Valid, 5635 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-07 00:29:47,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2021-12-07 00:29:47,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1471. [2021-12-07 00:29:47,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1158 states have (on average 1.6001727115716753) internal successors, (1853), 1215 states have internal predecessors, (1853), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-07 00:29:47,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 2404 transitions. [2021-12-07 00:29:47,512 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 2404 transitions. Word has length 105 [2021-12-07 00:29:47,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:47,513 INFO L470 AbstractCegarLoop]: Abstraction has 1471 states and 2404 transitions. [2021-12-07 00:29:47,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:29:47,513 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 2404 transitions. [2021-12-07 00:29:47,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-07 00:29:47,515 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:47,515 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] [2021-12-07 00:29:47,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 00:29:47,515 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:47,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:47,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1784898178, now seen corresponding path program 1 times [2021-12-07 00:29:47,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:47,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181837902] [2021-12-07 00:29:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:47,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:47,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:47,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:47,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:47,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:29:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:47,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:29:47,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:47,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:47,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:47,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:47,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:47,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:29:47,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:47,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:29:47,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:47,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:29:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:47,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:29:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:29:47,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:47,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181837902] [2021-12-07 00:29:47,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181837902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:47,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:47,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:29:47,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872247809] [2021-12-07 00:29:47,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:47,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:29:47,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:47,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:29:47,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:29:47,738 INFO L87 Difference]: Start difference. First operand 1471 states and 2404 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:29:52,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:52,164 INFO L93 Difference]: Finished difference Result 3423 states and 5764 transitions. [2021-12-07 00:29:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:29:52,165 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2021-12-07 00:29:52,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:52,173 INFO L225 Difference]: With dead ends: 3423 [2021-12-07 00:29:52,173 INFO L226 Difference]: Without dead ends: 2013 [2021-12-07 00:29:52,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:29:52,177 INFO L933 BasicCegarLoop]: 844 mSDtfsCounter, 950 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 4325 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 4585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 4325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:52,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1014 Valid, 3592 Invalid, 4585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 4325 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-07 00:29:52,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2021-12-07 00:29:52,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1475. [2021-12-07 00:29:52,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1475 states, 1162 states have (on average 1.5981067125645438) internal successors, (1857), 1219 states have internal predecessors, (1857), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-07 00:29:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1475 states to 1475 states and 2408 transitions. [2021-12-07 00:29:52,381 INFO L78 Accepts]: Start accepts. Automaton has 1475 states and 2408 transitions. Word has length 105 [2021-12-07 00:29:52,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:52,381 INFO L470 AbstractCegarLoop]: Abstraction has 1475 states and 2408 transitions. [2021-12-07 00:29:52,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:29:52,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1475 states and 2408 transitions. [2021-12-07 00:29:52,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-07 00:29:52,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:52,383 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] [2021-12-07 00:29:52,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 00:29:52,383 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:52,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:52,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1225052650, now seen corresponding path program 1 times [2021-12-07 00:29:52,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:52,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274001531] [2021-12-07 00:29:52,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:52,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:52,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:52,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:52,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:29:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:52,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:29:52,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:52,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:52,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:52,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:52,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:52,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:29:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:52,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:29:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:52,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:29:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:52,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:29:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:52,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:29:52,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:52,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274001531] [2021-12-07 00:29:52,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274001531] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:52,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:52,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-07 00:29:52,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133962745] [2021-12-07 00:29:52,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:52,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:29:52,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:52,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:29:52,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:29:52,601 INFO L87 Difference]: Start difference. First operand 1475 states and 2408 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:29:56,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:29:56,781 INFO L93 Difference]: Finished difference Result 3431 states and 5770 transitions. [2021-12-07 00:29:56,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:29:56,781 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 106 [2021-12-07 00:29:56,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:29:56,790 INFO L225 Difference]: With dead ends: 3431 [2021-12-07 00:29:56,790 INFO L226 Difference]: Without dead ends: 2021 [2021-12-07 00:29:56,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:29:56,793 INFO L933 BasicCegarLoop]: 847 mSDtfsCounter, 1765 mSDsluCounter, 2641 mSDsCounter, 0 mSdLazyCounter, 4104 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 3488 SdHoareTripleChecker+Invalid, 4626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 4104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:29:56,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 3488 Invalid, 4626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 4104 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-07 00:29:56,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2021 states. [2021-12-07 00:29:56,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2021 to 1480. [2021-12-07 00:29:56,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1167 states have (on average 1.5955441302485005) internal successors, (1862), 1224 states have internal predecessors, (1862), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (311), 230 states have call predecessors, (311), 235 states have call successors, (311) [2021-12-07 00:29:56,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 2413 transitions. [2021-12-07 00:29:56,999 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 2413 transitions. Word has length 106 [2021-12-07 00:29:56,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:29:57,000 INFO L470 AbstractCegarLoop]: Abstraction has 1480 states and 2413 transitions. [2021-12-07 00:29:57,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-07 00:29:57,000 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 2413 transitions. [2021-12-07 00:29:57,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-07 00:29:57,001 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:29:57,002 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] [2021-12-07 00:29:57,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 00:29:57,002 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:29:57,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:29:57,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1470623475, now seen corresponding path program 1 times [2021-12-07 00:29:57,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:29:57,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663325521] [2021-12-07 00:29:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:29:57,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:29:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:57,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:29:57,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:57,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:57,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:29:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:57,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-07 00:29:57,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:57,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:57,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:57,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:29:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:57,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:29:57,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:57,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:29:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:57,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:29:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:57,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:29:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:57,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:29:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:29:57,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:29:57,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:29:57,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663325521] [2021-12-07 00:29:57,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663325521] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:29:57,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:29:57,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:29:57,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496632685] [2021-12-07 00:29:57,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:29:57,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:29:57,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:29:57,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:29:57,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:29:57,218 INFO L87 Difference]: Start difference. First operand 1480 states and 2413 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:30:04,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:04,502 INFO L93 Difference]: Finished difference Result 4849 states and 8352 transitions. [2021-12-07 00:30:04,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-07 00:30:04,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 107 [2021-12-07 00:30:04,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:04,521 INFO L225 Difference]: With dead ends: 4849 [2021-12-07 00:30:04,521 INFO L226 Difference]: Without dead ends: 3447 [2021-12-07 00:30:04,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=158, Invalid=598, Unknown=0, NotChecked=0, Total=756 [2021-12-07 00:30:04,525 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 2555 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 4634 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2619 SdHoareTripleChecker+Valid, 2832 SdHoareTripleChecker+Invalid, 5465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 4634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:04,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2619 Valid, 2832 Invalid, 5465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 4634 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-12-07 00:30:04,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3447 states. [2021-12-07 00:30:04,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3447 to 2518. [2021-12-07 00:30:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 1989 states have (on average 1.592760180995475) internal successors, (3168), 2078 states have internal predecessors, (3168), 396 states have call successors, (396), 102 states have call predecessors, (396), 132 states have return successors, (535), 397 states have call predecessors, (535), 391 states have call successors, (535) [2021-12-07 00:30:04,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 4099 transitions. [2021-12-07 00:30:04,881 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 4099 transitions. Word has length 107 [2021-12-07 00:30:04,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:30:04,881 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 4099 transitions. [2021-12-07 00:30:04,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:30:04,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 4099 transitions. [2021-12-07 00:30:04,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-07 00:30:04,883 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:30:04,883 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] [2021-12-07 00:30:04,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 00:30:04,883 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:30:04,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:30:04,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1495805578, now seen corresponding path program 1 times [2021-12-07 00:30:04,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:30:04,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68355248] [2021-12-07 00:30:04,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:04,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:30:04,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:04,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:30:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:04,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:04,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:04,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:30:04,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:05,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-07 00:30:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:05,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:05,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:05,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:30:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:05,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:30:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:05,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:30:05,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:05,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:30:05,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:05,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:30:05,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:30:05,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:30:05,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68355248] [2021-12-07 00:30:05,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68355248] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:30:05,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629100269] [2021-12-07 00:30:05,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:05,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:30:05,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:30:05,107 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:30:05,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:30:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:05,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:30:05,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:30:05,455 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:30:05,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:30:05,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629100269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:30:05,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:30:05,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-12-07 00:30:05,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598350541] [2021-12-07 00:30:05,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:30:05,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:30:05,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:30:05,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:30:05,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:30:05,457 INFO L87 Difference]: Start difference. First operand 2518 states and 4099 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:30:07,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:07,696 INFO L93 Difference]: Finished difference Result 8499 states and 14324 transitions. [2021-12-07 00:30:07,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:30:07,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2021-12-07 00:30:07,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:07,721 INFO L225 Difference]: With dead ends: 8499 [2021-12-07 00:30:07,721 INFO L226 Difference]: Without dead ends: 6059 [2021-12-07 00:30:07,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:30:07,730 INFO L933 BasicCegarLoop]: 1560 mSDtfsCounter, 2129 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 2407 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 2878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 2407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:07,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2252 Valid, 2686 Invalid, 2878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [471 Valid, 2407 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-07 00:30:07,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6059 states. [2021-12-07 00:30:08,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6059 to 5361. [2021-12-07 00:30:08,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5361 states, 4153 states have (on average 1.589212617385023) internal successors, (6600), 4358 states have internal predecessors, (6600), 932 states have call successors, (932), 199 states have call predecessors, (932), 275 states have return successors, (1338), 948 states have call predecessors, (1338), 927 states have call successors, (1338) [2021-12-07 00:30:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5361 states to 5361 states and 8870 transitions. [2021-12-07 00:30:08,611 INFO L78 Accepts]: Start accepts. Automaton has 5361 states and 8870 transitions. Word has length 109 [2021-12-07 00:30:08,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:30:08,611 INFO L470 AbstractCegarLoop]: Abstraction has 5361 states and 8870 transitions. [2021-12-07 00:30:08,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:30:08,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5361 states and 8870 transitions. [2021-12-07 00:30:08,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-07 00:30:08,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:30:08,613 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] [2021-12-07 00:30:08,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:30:08,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-07 00:30:08,814 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:30:08,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:30:08,814 INFO L85 PathProgramCache]: Analyzing trace with hash 549562617, now seen corresponding path program 1 times [2021-12-07 00:30:08,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:30:08,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940804963] [2021-12-07 00:30:08,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:08,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:30:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:08,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:30:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:08,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:08,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:30:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:08,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-07 00:30:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:09,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:09,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:30:09,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:09,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:30:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:30:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:09,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:30:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:09,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:30:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:30:09,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:30:09,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940804963] [2021-12-07 00:30:09,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940804963] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:30:09,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169985198] [2021-12-07 00:30:09,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:09,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:30:09,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:30:09,057 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:30:09,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:30:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:09,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 1450 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:30:09,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:30:09,354 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:30:09,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:30:09,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169985198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:30:09,354 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:30:09,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-12-07 00:30:09,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814272423] [2021-12-07 00:30:09,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:30:09,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:30:09,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:30:09,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:30:09,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:30:09,356 INFO L87 Difference]: Start difference. First operand 5361 states and 8870 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:30:12,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:12,882 INFO L93 Difference]: Finished difference Result 18789 states and 32510 transitions. [2021-12-07 00:30:12,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:30:12,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2021-12-07 00:30:12,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:12,945 INFO L225 Difference]: With dead ends: 18789 [2021-12-07 00:30:12,945 INFO L226 Difference]: Without dead ends: 13506 [2021-12-07 00:30:12,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:30:12,967 INFO L933 BasicCegarLoop]: 1545 mSDtfsCounter, 2649 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 592 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2772 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 2298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:12,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2772 Valid, 2432 Invalid, 2298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 00:30:12,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13506 states. [2021-12-07 00:30:15,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13506 to 11732. [2021-12-07 00:30:15,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11732 states, 8901 states have (on average 1.5828558588922592) internal successors, (14089), 9378 states have internal predecessors, (14089), 2254 states have call successors, (2254), 393 states have call predecessors, (2254), 576 states have return successors, (3410), 2320 states have call predecessors, (3410), 2249 states have call successors, (3410) [2021-12-07 00:30:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11732 states to 11732 states and 19753 transitions. [2021-12-07 00:30:15,107 INFO L78 Accepts]: Start accepts. Automaton has 11732 states and 19753 transitions. Word has length 110 [2021-12-07 00:30:15,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:30:15,107 INFO L470 AbstractCegarLoop]: Abstraction has 11732 states and 19753 transitions. [2021-12-07 00:30:15,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 6 states have internal predecessors, (83), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:30:15,108 INFO L276 IsEmpty]: Start isEmpty. Operand 11732 states and 19753 transitions. [2021-12-07 00:30:15,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-07 00:30:15,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:30:15,110 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] [2021-12-07 00:30:15,131 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:30:15,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:30:15,310 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:30:15,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:30:15,311 INFO L85 PathProgramCache]: Analyzing trace with hash -354495002, now seen corresponding path program 1 times [2021-12-07 00:30:15,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:30:15,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448412758] [2021-12-07 00:30:15,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:15,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:30:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:15,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:30:15,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:15,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:15,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:30:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:15,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-07 00:30:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:15,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:15,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:15,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:30:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:15,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:30:15,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:15,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:30:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:30:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:15,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:30:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:15,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:30:15,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:30:15,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448412758] [2021-12-07 00:30:15,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448412758] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:30:15,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410730454] [2021-12-07 00:30:15,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:15,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:30:15,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:30:15,550 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:30:15,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:30:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:15,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 1451 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:30:15,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:30:15,849 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:30:15,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:30:15,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410730454] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:30:15,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:30:15,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-12-07 00:30:15,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022853734] [2021-12-07 00:30:15,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:30:15,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:30:15,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:30:15,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:30:15,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:30:15,851 INFO L87 Difference]: Start difference. First operand 11732 states and 19753 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:30:23,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:23,500 INFO L93 Difference]: Finished difference Result 42664 states and 76386 transitions. [2021-12-07 00:30:23,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:30:23,501 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2021-12-07 00:30:23,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:23,684 INFO L225 Difference]: With dead ends: 42664 [2021-12-07 00:30:23,684 INFO L226 Difference]: Without dead ends: 31010 [2021-12-07 00:30:23,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:30:23,754 INFO L933 BasicCegarLoop]: 1528 mSDtfsCounter, 2661 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 1701 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2784 SdHoareTripleChecker+Valid, 2403 SdHoareTripleChecker+Invalid, 2301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 1701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:23,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2784 Valid, 2403 Invalid, 2301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 1701 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-07 00:30:23,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31010 states. [2021-12-07 00:30:29,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31010 to 26424. [2021-12-07 00:30:29,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26424 states, 19612 states have (on average 1.5754130124413623) internal successors, (30897), 20738 states have internal predecessors, (30897), 5593 states have call successors, (5593), 781 states have call predecessors, (5593), 1218 states have return successors, (9089), 5819 states have call predecessors, (9089), 5588 states have call successors, (9089) [2021-12-07 00:30:29,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26424 states to 26424 states and 45579 transitions. [2021-12-07 00:30:29,230 INFO L78 Accepts]: Start accepts. Automaton has 26424 states and 45579 transitions. Word has length 111 [2021-12-07 00:30:29,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:30:29,230 INFO L470 AbstractCegarLoop]: Abstraction has 26424 states and 45579 transitions. [2021-12-07 00:30:29,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 6 states have internal predecessors, (84), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:30:29,230 INFO L276 IsEmpty]: Start isEmpty. Operand 26424 states and 45579 transitions. [2021-12-07 00:30:29,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 00:30:29,233 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:30:29,233 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] [2021-12-07 00:30:29,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:30:29,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:30:29,434 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:30:29,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:30:29,434 INFO L85 PathProgramCache]: Analyzing trace with hash 49192981, now seen corresponding path program 1 times [2021-12-07 00:30:29,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:30:29,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73877854] [2021-12-07 00:30:29,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:29,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:30:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:29,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:30:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:29,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:29,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:30:29,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:29,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-07 00:30:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:29,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:29,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:30:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:29,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:30:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:29,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:30:29,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:29,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:30:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:29,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:30:29,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:29,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:30:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:30:29,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:30:29,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73877854] [2021-12-07 00:30:29,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73877854] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:30:29,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573200892] [2021-12-07 00:30:29,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:30:29,690 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:30:29,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:30:29,691 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:30:29,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:30:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:30:29,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:30:29,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:30:30,030 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:30:30,030 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:30:30,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573200892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:30:30,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:30:30,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2021-12-07 00:30:30,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108951537] [2021-12-07 00:30:30,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:30:30,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:30:30,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:30:30,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:30:30,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-07 00:30:30,032 INFO L87 Difference]: Start difference. First operand 26424 states and 45579 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:30:48,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:30:48,052 INFO L93 Difference]: Finished difference Result 99824 states and 188563 transitions. [2021-12-07 00:30:48,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 00:30:48,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2021-12-07 00:30:48,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:30:48,570 INFO L225 Difference]: With dead ends: 99824 [2021-12-07 00:30:48,570 INFO L226 Difference]: Without dead ends: 73478 [2021-12-07 00:30:48,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:30:48,805 INFO L933 BasicCegarLoop]: 1528 mSDtfsCounter, 3182 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3305 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 2392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:30:48,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3305 Valid, 2288 Invalid, 2392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 1649 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:30:48,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73478 states. [2021-12-07 00:31:02,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73478 to 61368. [2021-12-07 00:31:02,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61368 states, 44559 states have (on average 1.5681007203931865) internal successors, (69873), 47258 states have internal predecessors, (69873), 14196 states have call successors, (14196), 1557 states have call predecessors, (14196), 2612 states have return successors, (25862), 14922 states have call predecessors, (25862), 14191 states have call successors, (25862) [2021-12-07 00:31:02,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61368 states to 61368 states and 109931 transitions. [2021-12-07 00:31:02,931 INFO L78 Accepts]: Start accepts. Automaton has 61368 states and 109931 transitions. Word has length 112 [2021-12-07 00:31:02,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:31:02,931 INFO L470 AbstractCegarLoop]: Abstraction has 61368 states and 109931 transitions. [2021-12-07 00:31:02,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-07 00:31:02,931 INFO L276 IsEmpty]: Start isEmpty. Operand 61368 states and 109931 transitions. [2021-12-07 00:31:02,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-07 00:31:02,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:31:02,934 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] [2021-12-07 00:31:02,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 00:31:03,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-07 00:31:03,136 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:31:03,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:03,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1815372179, now seen corresponding path program 1 times [2021-12-07 00:31:03,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:03,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883411746] [2021-12-07 00:31:03,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:03,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:03,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:31:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:03,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:31:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:03,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:31:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:03,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-07 00:31:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:03,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:31:03,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:03,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:31:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:03,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:31:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:03,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:31:03,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:03,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:31:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:03,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:31:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:03,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:31:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:03,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:31:03,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:03,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883411746] [2021-12-07 00:31:03,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883411746] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:31:03,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774468845] [2021-12-07 00:31:03,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:03,417 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:31:03,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:03,417 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:31:03,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:31:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:03,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 1452 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:31:03,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:31:03,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:31:03,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774468845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:31:03,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:31:03,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-12-07 00:31:03,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069234112] [2021-12-07 00:31:03,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:31:03,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:31:03,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:03,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:31:03,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:31:03,622 INFO L87 Difference]: Start difference. First operand 61368 states and 109931 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-07 00:31:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:31:29,888 INFO L93 Difference]: Finished difference Result 183937 states and 346871 transitions. [2021-12-07 00:31:29,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:31:29,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 112 [2021-12-07 00:31:29,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:31:30,815 INFO L225 Difference]: With dead ends: 183937 [2021-12-07 00:31:30,815 INFO L226 Difference]: Without dead ends: 122647 [2021-12-07 00:31:31,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:31:31,192 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 815 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:31:31,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 1741 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:31:31,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122647 states. [2021-12-07 00:31:57,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122647 to 122645. [2021-12-07 00:31:57,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122645 states, 89041 states have (on average 1.5633247605035883) internal successors, (139200), 94436 states have internal predecessors, (139200), 28382 states have call successors, (28382), 3109 states have call predecessors, (28382), 5221 states have return successors, (63801), 29839 states have call predecessors, (63801), 28377 states have call successors, (63801) [2021-12-07 00:31:59,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122645 states to 122645 states and 231383 transitions. [2021-12-07 00:31:59,229 INFO L78 Accepts]: Start accepts. Automaton has 122645 states and 231383 transitions. Word has length 112 [2021-12-07 00:31:59,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:31:59,229 INFO L470 AbstractCegarLoop]: Abstraction has 122645 states and 231383 transitions. [2021-12-07 00:31:59,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-07 00:31:59,229 INFO L276 IsEmpty]: Start isEmpty. Operand 122645 states and 231383 transitions. [2021-12-07 00:31:59,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-07 00:31:59,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:31:59,232 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] [2021-12-07 00:31:59,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 00:31:59,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-07 00:31:59,434 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:31:59,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:31:59,435 INFO L85 PathProgramCache]: Analyzing trace with hash 441549930, now seen corresponding path program 1 times [2021-12-07 00:31:59,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:31:59,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444348133] [2021-12-07 00:31:59,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:59,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:31:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:31:59,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:31:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:31:59,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-07 00:31:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:31:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:31:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:31:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:31:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:31:59,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:31:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:31:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,661 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:31:59,661 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:31:59,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444348133] [2021-12-07 00:31:59,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444348133] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:31:59,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [640290847] [2021-12-07 00:31:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:31:59,661 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:31:59,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:31:59,662 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:31:59,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 00:31:59,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:31:59,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:31:59,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:31:59,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:31:59,881 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:31:59,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [640290847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:31:59,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:31:59,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-12-07 00:31:59,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895762441] [2021-12-07 00:31:59,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:31:59,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:31:59,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:31:59,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:31:59,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:31:59,882 INFO L87 Difference]: Start difference. First operand 122645 states and 231383 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-07 00:32:54,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:32:54,156 INFO L93 Difference]: Finished difference Result 367770 states and 758888 transitions. [2021-12-07 00:32:54,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:32:54,157 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 113 [2021-12-07 00:32:54,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:32:56,681 INFO L225 Difference]: With dead ends: 367770 [2021-12-07 00:32:56,681 INFO L226 Difference]: Without dead ends: 245203 [2021-12-07 00:32:57,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:32:57,782 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 814 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1651 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:32:57,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 1651 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:32:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245203 states. [2021-12-07 00:33:52,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245203 to 245200. [2021-12-07 00:33:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245200 states, 178006 states have (on average 1.5583912901812298) internal successors, (277403), 188793 states have internal predecessors, (277403), 56754 states have call successors, (56754), 6213 states have call predecessors, (56754), 10439 states have return successors, (171953), 59673 states have call predecessors, (171953), 56749 states have call successors, (171953) [2021-12-07 00:33:56,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245200 states to 245200 states and 506110 transitions. [2021-12-07 00:33:56,368 INFO L78 Accepts]: Start accepts. Automaton has 245200 states and 506110 transitions. Word has length 113 [2021-12-07 00:33:56,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:33:56,369 INFO L470 AbstractCegarLoop]: Abstraction has 245200 states and 506110 transitions. [2021-12-07 00:33:56,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-07 00:33:56,369 INFO L276 IsEmpty]: Start isEmpty. Operand 245200 states and 506110 transitions. [2021-12-07 00:33:56,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-07 00:33:56,374 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:33:56,374 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] [2021-12-07 00:33:56,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-07 00:33:56,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:56,575 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:33:56,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:33:56,577 INFO L85 PathProgramCache]: Analyzing trace with hash 802737077, now seen corresponding path program 1 times [2021-12-07 00:33:56,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:33:56,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539204136] [2021-12-07 00:33:56,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:56,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:33:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:33:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:33:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:33:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-07 00:33:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:33:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:33:56,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:33:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:33:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:33:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:33:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:33:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:33:56,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:33:56,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539204136] [2021-12-07 00:33:56,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539204136] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:33:56,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694836558] [2021-12-07 00:33:56,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:33:56,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:33:56,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:33:56,883 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:33:56,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 00:33:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:33:57,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:33:57,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:33:57,106 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:33:57,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:33:57,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [694836558] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:33:57,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:33:57,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-12-07 00:33:57,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704241496] [2021-12-07 00:33:57,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:33:57,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:33:57,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:33:57,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:33:57,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:33:57,107 INFO L87 Difference]: Start difference. First operand 245200 states and 506110 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-07 00:35:52,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:52,733 INFO L93 Difference]: Finished difference Result 735437 states and 1769156 transitions. [2021-12-07 00:35:52,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:35:52,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 114 [2021-12-07 00:35:52,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:00,293 INFO L225 Difference]: With dead ends: 735437 [2021-12-07 00:36:00,293 INFO L226 Difference]: Without dead ends: 490315 [2021-12-07 00:36:04,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:36:04,486 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 813 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:04,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [813 Valid, 1654 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:36:04,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490315 states. [2021-12-07 00:38:04,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490315 to 490311. [2021-12-07 00:38:05,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490311 states, 355937 states have (on average 1.5533788282757903) internal successors, (552905), 377508 states have internal predecessors, (552905), 113498 states have call successors, (113498), 12421 states have call predecessors, (113498), 20875 states have return successors, (513189), 119341 states have call predecessors, (513189), 113493 states have call successors, (513189) [2021-12-07 00:38:15,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490311 states to 490311 states and 1179592 transitions. [2021-12-07 00:38:15,328 INFO L78 Accepts]: Start accepts. Automaton has 490311 states and 1179592 transitions. Word has length 114 [2021-12-07 00:38:15,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:15,329 INFO L470 AbstractCegarLoop]: Abstraction has 490311 states and 1179592 transitions. [2021-12-07 00:38:15,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-07 00:38:15,329 INFO L276 IsEmpty]: Start isEmpty. Operand 490311 states and 1179592 transitions. [2021-12-07 00:38:15,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-07 00:38:15,335 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:15,335 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] [2021-12-07 00:38:15,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 00:38:15,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:15,536 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:38:15,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:15,536 INFO L85 PathProgramCache]: Analyzing trace with hash -885359348, now seen corresponding path program 1 times [2021-12-07 00:38:15,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:38:15,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686399552] [2021-12-07 00:38:15,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:15,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:38:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:15,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-07 00:38:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:15,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:38:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:15,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:38:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:15,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-07 00:38:15,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:15,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:38:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:15,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-07 00:38:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:15,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-07 00:38:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:15,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-07 00:38:15,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:15,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-07 00:38:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:15,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:38:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:15,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-07 00:38:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:15,778 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-07 00:38:15,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:38:15,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686399552] [2021-12-07 00:38:15,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686399552] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:38:15,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254166709] [2021-12-07 00:38:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:15,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:15,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:38:15,780 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:38:15,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9ec9ac9a-22cf-491b-a741-fa32ae1441ec/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 00:38:15,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:15,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:38:15,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:16,017 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-07 00:38:16,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:38:16,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254166709] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:38:16,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:38:16,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2021-12-07 00:38:16,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264999285] [2021-12-07 00:38:16,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:38:16,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:38:16,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:38:16,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:38:16,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-07 00:38:16,019 INFO L87 Difference]: Start difference. First operand 490311 states and 1179592 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11)