./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.03.cil-2.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_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/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_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.03.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/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_2ab4da8f-a622-4794-86f2-b4b52c4d4207/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 4996a252ab084c920e1b9a19c3119ce328d4cb97d6d45029062c9dac50449e19 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:27:14,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:27:14,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:27:14,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:27:14,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:27:14,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:27:14,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:27:14,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:27:14,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:27:14,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:27:14,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:27:14,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:27:14,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:27:14,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:27:14,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:27:14,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:27:14,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:27:14,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:27:14,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:27:14,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:27:14,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:27:14,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:27:14,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:27:14,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:27:14,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:27:14,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:27:14,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:27:14,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:27:14,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:27:14,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:27:14,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:27:14,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:27:14,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:27:14,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:27:14,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:27:14,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:27:14,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:27:14,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:27:14,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:27:14,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:27:14,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:27:14,533 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:27:14,550 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:27:14,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:27:14,563 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:27:14,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:27:14,564 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:27:14,564 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:27:14,565 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:27:14,565 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:27:14,565 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:27:14,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:27:14,565 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:27:14,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:27:14,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:27:14,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:27:14,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:27:14,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:27:14,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:27:14,566 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:27:14,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:27:14,566 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:27:14,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:27:14,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:27:14,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:27:14,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:27:14,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:27:14,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:27:14,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:27:14,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:27:14,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:27:14,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:27:14,568 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:27:14,568 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:27:14,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:27:14,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:27:14,568 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_2ab4da8f-a622-4794-86f2-b4b52c4d4207/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4996a252ab084c920e1b9a19c3119ce328d4cb97d6d45029062c9dac50449e19 [2021-12-06 22:27:14,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:27:14,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:27:14,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:27:14,757 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:27:14,758 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:27:14,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/systemc/token_ring.03.cil-2.c [2021-12-06 22:27:14,803 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/data/c61d20c15/aa4a7267732c452a8cc57e91d1abfb2f/FLAG014bddbaa [2021-12-06 22:27:15,209 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:27:15,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/sv-benchmarks/c/systemc/token_ring.03.cil-2.c [2021-12-06 22:27:15,217 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/data/c61d20c15/aa4a7267732c452a8cc57e91d1abfb2f/FLAG014bddbaa [2021-12-06 22:27:15,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/data/c61d20c15/aa4a7267732c452a8cc57e91d1abfb2f [2021-12-06 22:27:15,228 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:27:15,229 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:27:15,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:27:15,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:27:15,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:27:15,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:27:15" (1/1) ... [2021-12-06 22:27:15,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7073bbe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:27:15, skipping insertion in model container [2021-12-06 22:27:15,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:27:15" (1/1) ... [2021-12-06 22:27:15,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:27:15,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:27:15,368 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_2ab4da8f-a622-4794-86f2-b4b52c4d4207/sv-benchmarks/c/systemc/token_ring.03.cil-2.c[671,684] [2021-12-06 22:27:15,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:27:15,416 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:27:15,424 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_2ab4da8f-a622-4794-86f2-b4b52c4d4207/sv-benchmarks/c/systemc/token_ring.03.cil-2.c[671,684] [2021-12-06 22:27:15,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:27:15,461 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:27:15,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:27:15 WrapperNode [2021-12-06 22:27:15,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:27:15,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:27:15,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:27:15,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:27:15,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:27:15" (1/1) ... [2021-12-06 22:27:15,477 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:27:15" (1/1) ... [2021-12-06 22:27:15,509 INFO L137 Inliner]: procedures = 34, calls = 40, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 331 [2021-12-06 22:27:15,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:27:15,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:27:15,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:27:15,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:27:15,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:27:15" (1/1) ... [2021-12-06 22:27:15,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:27:15" (1/1) ... [2021-12-06 22:27:15,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:27:15" (1/1) ... [2021-12-06 22:27:15,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:27:15" (1/1) ... [2021-12-06 22:27:15,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:27:15" (1/1) ... [2021-12-06 22:27:15,535 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:27:15" (1/1) ... [2021-12-06 22:27:15,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:27:15" (1/1) ... [2021-12-06 22:27:15,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:27:15,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:27:15,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:27:15,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:27:15,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:27:15" (1/1) ... [2021-12-06 22:27:15,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:27:15,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:27:15,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:27:15,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:27:15,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:27:15,606 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-12-06 22:27:15,606 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-12-06 22:27:15,606 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-12-06 22:27:15,606 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-12-06 22:27:15,606 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 22:27:15,606 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 22:27:15,606 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-12-06 22:27:15,606 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-12-06 22:27:15,607 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-12-06 22:27:15,607 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-12-06 22:27:15,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:27:15,607 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-12-06 22:27:15,607 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-12-06 22:27:15,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:27:15,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:27:15,672 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:27:15,674 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:27:15,942 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:27:15,950 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:27:15,950 INFO L301 CfgBuilder]: Removed 6 assume(true) statements. [2021-12-06 22:27:15,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:27:15 BoogieIcfgContainer [2021-12-06 22:27:15,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:27:15,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:27:15,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:27:15,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:27:15,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:27:15" (1/3) ... [2021-12-06 22:27:15,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d9b7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:27:15, skipping insertion in model container [2021-12-06 22:27:15,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:27:15" (2/3) ... [2021-12-06 22:27:15,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d9b7f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:27:15, skipping insertion in model container [2021-12-06 22:27:15,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:27:15" (3/3) ... [2021-12-06 22:27:15,958 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.03.cil-2.c [2021-12-06 22:27:15,962 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:27:15,962 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:27:15,999 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:27:16,004 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:27:16,004 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:27:16,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 132 states have (on average 1.5909090909090908) internal successors, (210), 134 states have internal predecessors, (210), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-06 22:27:16,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 22:27:16,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:16,029 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] [2021-12-06 22:27:16,029 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:16,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:16,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1701588439, now seen corresponding path program 1 times [2021-12-06 22:27:16,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:16,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082521476] [2021-12-06 22:27:16,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:16,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:16,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:16,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:16,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:16,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:16,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:16,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:27:16,307 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:16,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082521476] [2021-12-06 22:27:16,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082521476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:16,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:27:16,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:27:16,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791935987] [2021-12-06 22:27:16,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:16,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:27:16,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:16,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:27:16,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:27:16,340 INFO L87 Difference]: Start difference. First operand has 157 states, 132 states have (on average 1.5909090909090908) internal successors, (210), 134 states have internal predecessors, (210), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:16,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:16,732 INFO L93 Difference]: Finished difference Result 348 states and 549 transitions. [2021-12-06 22:27:16,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:27:16,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2021-12-06 22:27:16,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:16,743 INFO L225 Difference]: With dead ends: 348 [2021-12-06 22:27:16,743 INFO L226 Difference]: Without dead ends: 195 [2021-12-06 22:27:16,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:27:16,749 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 357 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:16,750 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [372 Valid, 420 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:27:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-06 22:27:16,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 152. [2021-12-06 22:27:16,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 128 states have (on average 1.4921875) internal successors, (191), 129 states have internal predecessors, (191), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2021-12-06 22:27:16,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 225 transitions. [2021-12-06 22:27:16,796 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 225 transitions. Word has length 78 [2021-12-06 22:27:16,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:16,797 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 225 transitions. [2021-12-06 22:27:16,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 225 transitions. [2021-12-06 22:27:16,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 22:27:16,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:16,800 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] [2021-12-06 22:27:16,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:27:16,801 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:16,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:16,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1208962265, now seen corresponding path program 1 times [2021-12-06 22:27:16,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:16,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283357649] [2021-12-06 22:27:16,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:16,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:16,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:16,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:16,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:16,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:16,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:27:16,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:16,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283357649] [2021-12-06 22:27:16,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283357649] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:16,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:27:16,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:27:16,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9248069] [2021-12-06 22:27:16,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:16,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:27:16,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:16,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:27:16,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:27:16,916 INFO L87 Difference]: Start difference. First operand 152 states and 225 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:17,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:17,463 INFO L93 Difference]: Finished difference Result 520 states and 792 transitions. [2021-12-06 22:27:17,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:27:17,463 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2021-12-06 22:27:17,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:17,467 INFO L225 Difference]: With dead ends: 520 [2021-12-06 22:27:17,467 INFO L226 Difference]: Without dead ends: 379 [2021-12-06 22:27:17,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:27:17,470 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 521 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:17,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 668 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:27:17,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-12-06 22:27:17,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 294. [2021-12-06 22:27:17,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 251 states have (on average 1.5059760956175299) internal successors, (378), 253 states have internal predecessors, (378), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (32), 29 states have call predecessors, (32), 29 states have call successors, (32) [2021-12-06 22:27:17,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 439 transitions. [2021-12-06 22:27:17,507 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 439 transitions. Word has length 78 [2021-12-06 22:27:17,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:17,507 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 439 transitions. [2021-12-06 22:27:17,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:17,508 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 439 transitions. [2021-12-06 22:27:17,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 22:27:17,510 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:17,510 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] [2021-12-06 22:27:17,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:27:17,511 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:17,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:17,511 INFO L85 PathProgramCache]: Analyzing trace with hash -971914069, now seen corresponding path program 1 times [2021-12-06 22:27:17,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:17,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800520510] [2021-12-06 22:27:17,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:17,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:17,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:17,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:17,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:17,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:17,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:17,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:27:17,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:17,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800520510] [2021-12-06 22:27:17,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800520510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:17,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:27:17,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:27:17,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896144478] [2021-12-06 22:27:17,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:17,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:27:17,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:17,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:27:17,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:27:17,606 INFO L87 Difference]: Start difference. First operand 294 states and 439 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:18,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:18,335 INFO L93 Difference]: Finished difference Result 850 states and 1291 transitions. [2021-12-06 22:27:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:27:18,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2021-12-06 22:27:18,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:18,341 INFO L225 Difference]: With dead ends: 850 [2021-12-06 22:27:18,341 INFO L226 Difference]: Without dead ends: 567 [2021-12-06 22:27:18,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:27:18,344 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 518 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 1112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:18,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [528 Valid, 1115 Invalid, 1112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:27:18,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2021-12-06 22:27:18,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 428. [2021-12-06 22:27:18,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 366 states have (on average 1.5) internal successors, (549), 369 states have internal predecessors, (549), 41 states have call successors, (41), 18 states have call predecessors, (41), 20 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2021-12-06 22:27:18,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 636 transitions. [2021-12-06 22:27:18,389 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 636 transitions. Word has length 78 [2021-12-06 22:27:18,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:18,389 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 636 transitions. [2021-12-06 22:27:18,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:18,389 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 636 transitions. [2021-12-06 22:27:18,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 22:27:18,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:18,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:27:18,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:27:18,392 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:18,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:18,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1389310675, now seen corresponding path program 1 times [2021-12-06 22:27:18,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:18,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103038874] [2021-12-06 22:27:18,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:18,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:18,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:18,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:18,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:18,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:18,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:18,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:18,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:27:18,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:18,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103038874] [2021-12-06 22:27:18,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103038874] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:18,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:27:18,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:27:18,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026070899] [2021-12-06 22:27:18,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:18,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:27:18,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:18,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:27:18,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:27:18,493 INFO L87 Difference]: Start difference. First operand 428 states and 636 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:19,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:19,150 INFO L93 Difference]: Finished difference Result 1333 states and 2016 transitions. [2021-12-06 22:27:19,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:27:19,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2021-12-06 22:27:19,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:19,157 INFO L225 Difference]: With dead ends: 1333 [2021-12-06 22:27:19,157 INFO L226 Difference]: Without dead ends: 916 [2021-12-06 22:27:19,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:27:19,161 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 514 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:19,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 1104 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1031 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:27:19,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-12-06 22:27:19,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 699. [2021-12-06 22:27:19,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 599 states have (on average 1.4958263772954925) internal successors, (896), 604 states have internal predecessors, (896), 65 states have call successors, (65), 30 states have call predecessors, (65), 34 states have return successors, (78), 68 states have call predecessors, (78), 65 states have call successors, (78) [2021-12-06 22:27:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1039 transitions. [2021-12-06 22:27:19,215 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1039 transitions. Word has length 78 [2021-12-06 22:27:19,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:19,216 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 1039 transitions. [2021-12-06 22:27:19,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:19,216 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1039 transitions. [2021-12-06 22:27:19,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 22:27:19,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:19,218 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] [2021-12-06 22:27:19,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:27:19,219 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:19,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:19,219 INFO L85 PathProgramCache]: Analyzing trace with hash -710038421, now seen corresponding path program 1 times [2021-12-06 22:27:19,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:19,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624970983] [2021-12-06 22:27:19,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:19,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:19,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:19,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:19,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:19,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:19,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:19,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:19,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:27:19,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:19,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624970983] [2021-12-06 22:27:19,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624970983] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:19,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:27:19,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:27:19,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424823454] [2021-12-06 22:27:19,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:19,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:27:19,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:19,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:27:19,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:27:19,298 INFO L87 Difference]: Start difference. First operand 699 states and 1039 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:20,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:20,075 INFO L93 Difference]: Finished difference Result 2478 states and 3729 transitions. [2021-12-06 22:27:20,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:27:20,075 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2021-12-06 22:27:20,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:20,087 INFO L225 Difference]: With dead ends: 2478 [2021-12-06 22:27:20,087 INFO L226 Difference]: Without dead ends: 1790 [2021-12-06 22:27:20,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:27:20,092 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 648 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:20,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [662 Valid, 1089 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 22:27:20,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2021-12-06 22:27:20,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1232. [2021-12-06 22:27:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1232 states, 1060 states have (on average 1.4962264150943396) internal successors, (1586), 1069 states have internal predecessors, (1586), 109 states have call successors, (109), 54 states have call predecessors, (109), 62 states have return successors, (144), 116 states have call predecessors, (144), 109 states have call successors, (144) [2021-12-06 22:27:20,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1232 states to 1232 states and 1839 transitions. [2021-12-06 22:27:20,170 INFO L78 Accepts]: Start accepts. Automaton has 1232 states and 1839 transitions. Word has length 78 [2021-12-06 22:27:20,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:20,170 INFO L470 AbstractCegarLoop]: Abstraction has 1232 states and 1839 transitions. [2021-12-06 22:27:20,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:20,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1232 states and 1839 transitions. [2021-12-06 22:27:20,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 22:27:20,173 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:20,173 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] [2021-12-06 22:27:20,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:27:20,173 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:20,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:20,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1251536237, now seen corresponding path program 1 times [2021-12-06 22:27:20,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:20,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020972701] [2021-12-06 22:27:20,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:20,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:20,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:20,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:20,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:20,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:20,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:27:20,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:20,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020972701] [2021-12-06 22:27:20,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020972701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:20,248 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:27:20,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:27:20,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032394029] [2021-12-06 22:27:20,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:20,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:27:20,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:20,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:27:20,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:27:20,250 INFO L87 Difference]: Start difference. First operand 1232 states and 1839 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:21,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:21,012 INFO L93 Difference]: Finished difference Result 4433 states and 6675 transitions. [2021-12-06 22:27:21,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:27:21,012 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2021-12-06 22:27:21,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:21,033 INFO L225 Difference]: With dead ends: 4433 [2021-12-06 22:27:21,033 INFO L226 Difference]: Without dead ends: 3212 [2021-12-06 22:27:21,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:27:21,040 INFO L933 BasicCegarLoop]: 379 mSDtfsCounter, 534 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 1219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:21,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [543 Valid, 1124 Invalid, 1219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 22:27:21,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2021-12-06 22:27:21,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 2253. [2021-12-06 22:27:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 1941 states have (on average 1.4961360123647605) internal successors, (2904), 1958 states have internal predecessors, (2904), 193 states have call successors, (193), 102 states have call predecessors, (193), 118 states have return successors, (290), 208 states have call predecessors, (290), 193 states have call successors, (290) [2021-12-06 22:27:21,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 3387 transitions. [2021-12-06 22:27:21,164 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 3387 transitions. Word has length 78 [2021-12-06 22:27:21,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:21,164 INFO L470 AbstractCegarLoop]: Abstraction has 2253 states and 3387 transitions. [2021-12-06 22:27:21,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:21,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 3387 transitions. [2021-12-06 22:27:21,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 22:27:21,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:21,167 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] [2021-12-06 22:27:21,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:27:21,167 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:21,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:21,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1453360171, now seen corresponding path program 1 times [2021-12-06 22:27:21,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:21,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657764454] [2021-12-06 22:27:21,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:21,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:21,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:21,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:21,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:21,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:21,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:21,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:21,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:21,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:21,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:21,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:27:21,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:21,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657764454] [2021-12-06 22:27:21,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657764454] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:21,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:27:21,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:27:21,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160379906] [2021-12-06 22:27:21,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:21,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:27:21,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:21,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:27:21,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:27:21,228 INFO L87 Difference]: Start difference. First operand 2253 states and 3387 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:21,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:21,936 INFO L93 Difference]: Finished difference Result 8076 states and 12205 transitions. [2021-12-06 22:27:21,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:27:21,936 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2021-12-06 22:27:21,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:21,961 INFO L225 Difference]: With dead ends: 8076 [2021-12-06 22:27:21,962 INFO L226 Difference]: Without dead ends: 5834 [2021-12-06 22:27:21,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:27:21,969 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 597 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:21,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 756 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:27:21,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5834 states. [2021-12-06 22:27:22,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5834 to 4326. [2021-12-06 22:27:22,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 3742 states have (on average 1.4991982896846605) internal successors, (5610), 3775 states have internal predecessors, (5610), 353 states have call successors, (353), 198 states have call predecessors, (353), 230 states have return successors, (628), 384 states have call predecessors, (628), 353 states have call successors, (628) [2021-12-06 22:27:22,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 6591 transitions. [2021-12-06 22:27:22,178 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 6591 transitions. Word has length 78 [2021-12-06 22:27:22,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:22,178 INFO L470 AbstractCegarLoop]: Abstraction has 4326 states and 6591 transitions. [2021-12-06 22:27:22,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:22,179 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 6591 transitions. [2021-12-06 22:27:22,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 22:27:22,182 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:22,182 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] [2021-12-06 22:27:22,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:27:22,183 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:22,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:22,183 INFO L85 PathProgramCache]: Analyzing trace with hash 2014059949, now seen corresponding path program 1 times [2021-12-06 22:27:22,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:22,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362615510] [2021-12-06 22:27:22,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:22,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:22,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:22,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:22,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:22,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:22,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:22,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:27:22,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:22,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362615510] [2021-12-06 22:27:22,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362615510] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:22,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:27:22,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:27:22,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487001082] [2021-12-06 22:27:22,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:22,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:27:22,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:22,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:27:22,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:27:22,248 INFO L87 Difference]: Start difference. First operand 4326 states and 6591 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:22,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:22,775 INFO L93 Difference]: Finished difference Result 9686 states and 14956 transitions. [2021-12-06 22:27:22,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:27:22,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2021-12-06 22:27:22,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:22,809 INFO L225 Difference]: With dead ends: 9686 [2021-12-06 22:27:22,809 INFO L226 Difference]: Without dead ends: 5371 [2021-12-06 22:27:22,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:27:22,823 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 383 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:22,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 556 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:27:22,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2021-12-06 22:27:23,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 4326. [2021-12-06 22:27:23,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4326 states, 3742 states have (on average 1.4903794762159273) internal successors, (5577), 3775 states have internal predecessors, (5577), 353 states have call successors, (353), 198 states have call predecessors, (353), 230 states have return successors, (628), 384 states have call predecessors, (628), 353 states have call successors, (628) [2021-12-06 22:27:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4326 states to 4326 states and 6558 transitions. [2021-12-06 22:27:23,046 INFO L78 Accepts]: Start accepts. Automaton has 4326 states and 6558 transitions. Word has length 78 [2021-12-06 22:27:23,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:23,046 INFO L470 AbstractCegarLoop]: Abstraction has 4326 states and 6558 transitions. [2021-12-06 22:27:23,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:23,046 INFO L276 IsEmpty]: Start isEmpty. Operand 4326 states and 6558 transitions. [2021-12-06 22:27:23,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 22:27:23,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:23,051 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] [2021-12-06 22:27:23,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:27:23,051 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:23,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:23,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1847178261, now seen corresponding path program 1 times [2021-12-06 22:27:23,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:23,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730143235] [2021-12-06 22:27:23,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:23,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:23,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:23,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:23,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:23,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:23,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:23,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:23,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:27:23,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:23,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730143235] [2021-12-06 22:27:23,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730143235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:23,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:27:23,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:27:23,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241860989] [2021-12-06 22:27:23,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:23,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:27:23,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:23,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:27:23,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:27:23,109 INFO L87 Difference]: Start difference. First operand 4326 states and 6558 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:23,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:23,837 INFO L93 Difference]: Finished difference Result 12341 states and 18694 transitions. [2021-12-06 22:27:23,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:27:23,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2021-12-06 22:27:23,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:23,868 INFO L225 Difference]: With dead ends: 12341 [2021-12-06 22:27:23,868 INFO L226 Difference]: Without dead ends: 8027 [2021-12-06 22:27:23,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:27:23,879 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 670 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:23,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [698 Valid, 893 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:27:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8027 states. [2021-12-06 22:27:24,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8027 to 6512. [2021-12-06 22:27:24,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6512 states, 5621 states have (on average 1.4762497776196406) internal successors, (8298), 5687 states have internal predecessors, (8298), 542 states have call successors, (542), 300 states have call predecessors, (542), 348 states have return successors, (899), 556 states have call predecessors, (899), 542 states have call successors, (899) [2021-12-06 22:27:24,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6512 states to 6512 states and 9739 transitions. [2021-12-06 22:27:24,149 INFO L78 Accepts]: Start accepts. Automaton has 6512 states and 9739 transitions. Word has length 78 [2021-12-06 22:27:24,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:24,150 INFO L470 AbstractCegarLoop]: Abstraction has 6512 states and 9739 transitions. [2021-12-06 22:27:24,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 22:27:24,150 INFO L276 IsEmpty]: Start isEmpty. Operand 6512 states and 9739 transitions. [2021-12-06 22:27:24,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 22:27:24,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:24,164 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 22:27:24,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:27:24,164 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:24,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2119452571, now seen corresponding path program 1 times [2021-12-06 22:27:24,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:24,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891598116] [2021-12-06 22:27:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:24,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:24,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:24,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:24,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:24,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:24,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:24,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:27:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:24,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:27:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:24,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:27:24,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:24,280 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 22:27:24,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:24,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891598116] [2021-12-06 22:27:24,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891598116] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:27:24,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402978922] [2021-12-06 22:27:24,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:24,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:24,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:27:24,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:27:24,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:27:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:24,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:27:24,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:27:24,505 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:27:24,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:27:24,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402978922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:24,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:27:24,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 22:27:24,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769098075] [2021-12-06 22:27:24,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:24,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:27:24,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:24,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:27:24,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:27:24,507 INFO L87 Difference]: Start difference. First operand 6512 states and 9739 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 22:27:24,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:24,877 INFO L93 Difference]: Finished difference Result 19249 states and 28971 transitions. [2021-12-06 22:27:24,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:27:24,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 127 [2021-12-06 22:27:24,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:24,918 INFO L225 Difference]: With dead ends: 19249 [2021-12-06 22:27:24,918 INFO L226 Difference]: Without dead ends: 12749 [2021-12-06 22:27:24,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:27:24,935 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 177 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:24,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 430 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:27:24,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12749 states. [2021-12-06 22:27:25,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12749 to 12647. [2021-12-06 22:27:25,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12647 states, 10928 states have (on average 1.4759333821376281) internal successors, (16129), 11059 states have internal predecessors, (16129), 1026 states have call successors, (1026), 596 states have call predecessors, (1026), 692 states have return successors, (1709), 1023 states have call predecessors, (1709), 1026 states have call successors, (1709) [2021-12-06 22:27:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12647 states to 12647 states and 18864 transitions. [2021-12-06 22:27:25,495 INFO L78 Accepts]: Start accepts. Automaton has 12647 states and 18864 transitions. Word has length 127 [2021-12-06 22:27:25,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:25,495 INFO L470 AbstractCegarLoop]: Abstraction has 12647 states and 18864 transitions. [2021-12-06 22:27:25,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 22:27:25,496 INFO L276 IsEmpty]: Start isEmpty. Operand 12647 states and 18864 transitions. [2021-12-06 22:27:25,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 22:27:25,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:25,533 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 22:27:25,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:27:25,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:25,734 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:25,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:25,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1105450171, now seen corresponding path program 1 times [2021-12-06 22:27:25,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:25,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210561804] [2021-12-06 22:27:25,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:25,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:25,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:25,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:25,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:25,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:25,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:25,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:25,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:25,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:25,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:27:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:25,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:27:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:25,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:27:25,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:25,827 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 22:27:25,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:25,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210561804] [2021-12-06 22:27:25,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210561804] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:27:25,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202704904] [2021-12-06 22:27:25,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:25,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:25,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:27:25,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:27:25,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:27:25,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:25,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:27:25,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:27:26,024 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 22:27:26,024 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:27:26,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202704904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:26,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:27:26,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 22:27:26,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461062146] [2021-12-06 22:27:26,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:26,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:27:26,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:26,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:27:26,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:27:26,026 INFO L87 Difference]: Start difference. First operand 12647 states and 18864 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 22:27:26,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:26,711 INFO L93 Difference]: Finished difference Result 37548 states and 56370 transitions. [2021-12-06 22:27:26,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:27:26,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 127 [2021-12-06 22:27:26,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:26,781 INFO L225 Difference]: With dead ends: 37548 [2021-12-06 22:27:26,781 INFO L226 Difference]: Without dead ends: 24913 [2021-12-06 22:27:26,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:27:26,833 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 171 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:26,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 465 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:27:26,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24913 states. [2021-12-06 22:27:27,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24913 to 24711. [2021-12-06 22:27:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24711 states, 21338 states have (on average 1.4732870934483082) internal successors, (31437), 21599 states have internal predecessors, (31437), 1992 states have call successors, (1992), 1188 states have call predecessors, (1992), 1380 states have return successors, (3327), 1955 states have call predecessors, (3327), 1992 states have call successors, (3327) [2021-12-06 22:27:27,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24711 states to 24711 states and 36756 transitions. [2021-12-06 22:27:27,834 INFO L78 Accepts]: Start accepts. Automaton has 24711 states and 36756 transitions. Word has length 127 [2021-12-06 22:27:27,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:27,834 INFO L470 AbstractCegarLoop]: Abstraction has 24711 states and 36756 transitions. [2021-12-06 22:27:27,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 2 states have internal predecessors, (97), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 22:27:27,834 INFO L276 IsEmpty]: Start isEmpty. Operand 24711 states and 36756 transitions. [2021-12-06 22:27:27,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-12-06 22:27:27,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:27,864 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-12-06 22:27:27,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:27:28,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:28,065 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:28,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:28,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1762936357, now seen corresponding path program 1 times [2021-12-06 22:27:28,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:28,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337438438] [2021-12-06 22:27:28,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:28,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:28,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:28,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:28,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:28,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:28,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:28,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:27:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:28,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:27:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:28,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 22:27:28,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 22:27:28,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:28,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337438438] [2021-12-06 22:27:28,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337438438] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:27:28,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143116673] [2021-12-06 22:27:28,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:28,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:28,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:27:28,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:27:28,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:27:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:28,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:27:28,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:27:28,343 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 22:27:28,343 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:27:28,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143116673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:28,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:27:28,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:27:28,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24674745] [2021-12-06 22:27:28,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:28,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:27:28,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:28,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:27:28,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:27:28,345 INFO L87 Difference]: Start difference. First operand 24711 states and 36756 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:27:29,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:29,809 INFO L93 Difference]: Finished difference Result 73024 states and 109877 transitions. [2021-12-06 22:27:29,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:27:29,810 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 127 [2021-12-06 22:27:29,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:29,987 INFO L225 Difference]: With dead ends: 73024 [2021-12-06 22:27:29,988 INFO L226 Difference]: Without dead ends: 48326 [2021-12-06 22:27:30,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:27:30,041 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 192 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:30,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 639 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:27:30,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48326 states. [2021-12-06 22:27:31,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48326 to 48326. [2021-12-06 22:27:31,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48326 states, 41766 states have (on average 1.4659531676483264) internal successors, (61227), 42220 states have internal predecessors, (61227), 3823 states have call successors, (3823), 2352 states have call predecessors, (3823), 2736 states have return successors, (7122), 3817 states have call predecessors, (7122), 3823 states have call successors, (7122) [2021-12-06 22:27:31,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48326 states to 48326 states and 72172 transitions. [2021-12-06 22:27:31,869 INFO L78 Accepts]: Start accepts. Automaton has 48326 states and 72172 transitions. Word has length 127 [2021-12-06 22:27:31,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:31,869 INFO L470 AbstractCegarLoop]: Abstraction has 48326 states and 72172 transitions. [2021-12-06 22:27:31,869 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:27:31,869 INFO L276 IsEmpty]: Start isEmpty. Operand 48326 states and 72172 transitions. [2021-12-06 22:27:31,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-06 22:27:31,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:31,945 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:27:31,966 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:27:32,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:32,146 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:32,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:32,146 INFO L85 PathProgramCache]: Analyzing trace with hash -915733099, now seen corresponding path program 1 times [2021-12-06 22:27:32,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:32,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501657272] [2021-12-06 22:27:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:32,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:32,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:32,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:32,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:32,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:32,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:32,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:27:32,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:32,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:27:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:32,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:27:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:32,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:27:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:32,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 22:27:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:32,225 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 22:27:32,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:32,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501657272] [2021-12-06 22:27:32,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501657272] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:27:32,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061378644] [2021-12-06 22:27:32,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:32,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:32,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:27:32,226 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:27:32,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:27:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:32,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:27:32,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:27:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 22:27:32,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:27:32,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061378644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:32,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:27:32,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-12-06 22:27:32,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955978307] [2021-12-06 22:27:32,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:32,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:27:32,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:32,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:27:32,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:27:32,484 INFO L87 Difference]: Start difference. First operand 48326 states and 72172 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 22:27:35,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:35,544 INFO L93 Difference]: Finished difference Result 143366 states and 215715 transitions. [2021-12-06 22:27:35,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:27:35,545 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 165 [2021-12-06 22:27:35,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:35,871 INFO L225 Difference]: With dead ends: 143366 [2021-12-06 22:27:35,871 INFO L226 Difference]: Without dead ends: 95058 [2021-12-06 22:27:35,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:27:35,994 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 127 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:35,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 441 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:27:36,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95058 states. [2021-12-06 22:27:39,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95058 to 94256. [2021-12-06 22:27:39,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94256 states, 81452 states have (on average 1.4630579973481315) internal successors, (119169), 82358 states have internal predecessors, (119169), 7381 states have call successors, (7381), 4654 states have call predecessors, (7381), 5422 states have return successors, (13774), 7307 states have call predecessors, (13774), 7381 states have call successors, (13774) [2021-12-06 22:27:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94256 states to 94256 states and 140324 transitions. [2021-12-06 22:27:39,406 INFO L78 Accepts]: Start accepts. Automaton has 94256 states and 140324 transitions. Word has length 165 [2021-12-06 22:27:39,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:39,406 INFO L470 AbstractCegarLoop]: Abstraction has 94256 states and 140324 transitions. [2021-12-06 22:27:39,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 22:27:39,407 INFO L276 IsEmpty]: Start isEmpty. Operand 94256 states and 140324 transitions. [2021-12-06 22:27:39,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-06 22:27:39,567 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:39,568 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:27:39,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:27:39,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:39,769 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:39,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:39,771 INFO L85 PathProgramCache]: Analyzing trace with hash -2014016585, now seen corresponding path program 1 times [2021-12-06 22:27:39,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:39,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580697406] [2021-12-06 22:27:39,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:39,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:39,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:39,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:39,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:39,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:39,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:39,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:27:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:39,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:27:39,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:39,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:27:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:39,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:27:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:39,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:27:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:39,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 22:27:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:39,896 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-12-06 22:27:39,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:39,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580697406] [2021-12-06 22:27:39,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580697406] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:27:39,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750598765] [2021-12-06 22:27:39,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:39,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:39,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:27:39,898 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:27:39,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:27:39,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:39,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 607 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:27:39,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:27:40,141 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 22:27:40,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:27:40,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750598765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:40,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:27:40,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:27:40,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024291497] [2021-12-06 22:27:40,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:40,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:27:40,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:40,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:27:40,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:27:40,143 INFO L87 Difference]: Start difference. First operand 94256 states and 140324 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:27:43,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:43,051 INFO L93 Difference]: Finished difference Result 145376 states and 216883 transitions. [2021-12-06 22:27:43,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:27:43,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 183 [2021-12-06 22:27:43,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:43,275 INFO L225 Difference]: With dead ends: 145376 [2021-12-06 22:27:43,276 INFO L226 Difference]: Without dead ends: 80492 [2021-12-06 22:27:43,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:27:43,390 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 148 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:43,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 262 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:27:43,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80492 states. [2021-12-06 22:27:46,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80492 to 57404. [2021-12-06 22:27:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57404 states, 49816 states have (on average 1.4110526738397302) internal successors, (70293), 50278 states have internal predecessors, (70293), 4297 states have call successors, (4297), 2906 states have call predecessors, (4297), 3290 states have return successors, (6802), 4251 states have call predecessors, (6802), 4297 states have call successors, (6802) [2021-12-06 22:27:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57404 states to 57404 states and 81392 transitions. [2021-12-06 22:27:46,430 INFO L78 Accepts]: Start accepts. Automaton has 57404 states and 81392 transitions. Word has length 183 [2021-12-06 22:27:46,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:46,430 INFO L470 AbstractCegarLoop]: Abstraction has 57404 states and 81392 transitions. [2021-12-06 22:27:46,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:27:46,431 INFO L276 IsEmpty]: Start isEmpty. Operand 57404 states and 81392 transitions. [2021-12-06 22:27:46,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-06 22:27:46,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:46,505 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:27:46,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:27:46,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 22:27:46,706 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:46,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:46,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1165953516, now seen corresponding path program 1 times [2021-12-06 22:27:46,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:46,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067136917] [2021-12-06 22:27:46,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:46,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:46,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:46,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:46,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:46,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:46,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:46,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:46,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:27:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:46,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 22:27:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:46,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:27:46,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:46,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:27:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:46,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:27:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:46,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 22:27:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:46,817 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-06 22:27:46,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:46,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067136917] [2021-12-06 22:27:46,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067136917] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:27:46,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661530859] [2021-12-06 22:27:46,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:46,818 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:46,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:27:46,819 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:27:46,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:27:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:46,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:27:46,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:27:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-06 22:27:47,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:27:47,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661530859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:47,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:27:47,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:27:47,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010804841] [2021-12-06 22:27:47,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:47,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:27:47,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:47,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:27:47,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:27:47,046 INFO L87 Difference]: Start difference. First operand 57404 states and 81392 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:27:49,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:49,395 INFO L93 Difference]: Finished difference Result 100723 states and 142221 transitions. [2021-12-06 22:27:49,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:27:49,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 183 [2021-12-06 22:27:49,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:49,541 INFO L225 Difference]: With dead ends: 100723 [2021-12-06 22:27:49,541 INFO L226 Difference]: Without dead ends: 61486 [2021-12-06 22:27:49,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:27:49,600 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 160 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:49,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 446 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:27:49,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61486 states. [2021-12-06 22:27:52,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61486 to 61302. [2021-12-06 22:27:52,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61302 states, 53366 states have (on average 1.3846831315819061) internal successors, (73895), 53828 states have internal predecessors, (73895), 4395 states have call successors, (4395), 3156 states have call predecessors, (4395), 3540 states have return successors, (7150), 4349 states have call predecessors, (7150), 4395 states have call successors, (7150) [2021-12-06 22:27:52,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61302 states to 61302 states and 85440 transitions. [2021-12-06 22:27:52,346 INFO L78 Accepts]: Start accepts. Automaton has 61302 states and 85440 transitions. Word has length 183 [2021-12-06 22:27:52,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:52,347 INFO L470 AbstractCegarLoop]: Abstraction has 61302 states and 85440 transitions. [2021-12-06 22:27:52,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:27:52,347 INFO L276 IsEmpty]: Start isEmpty. Operand 61302 states and 85440 transitions. [2021-12-06 22:27:52,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 22:27:52,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:52,422 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:27:52,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-06 22:27:52,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 22:27:52,624 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:52,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:52,625 INFO L85 PathProgramCache]: Analyzing trace with hash -994898077, now seen corresponding path program 1 times [2021-12-06 22:27:52,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:52,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133907466] [2021-12-06 22:27:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:52,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:52,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:27:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:52,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:27:52,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:52,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:27:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:52,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:27:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:52,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:27:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:52,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:27:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:52,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:27:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:52,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:27:52,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:52,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 22:27:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:52,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:27:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:52,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 22:27:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:52,726 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-06 22:27:52,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:52,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133907466] [2021-12-06 22:27:52,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133907466] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:27:52,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629576461] [2021-12-06 22:27:52,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:52,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:52,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:27:52,727 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:27:52,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:27:52,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:52,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:27:52,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:27:52,930 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 22:27:52,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:27:52,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629576461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:27:52,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:27:52,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:27:52,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450497996] [2021-12-06 22:27:52,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:27:52,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:27:52,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:27:52,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:27:52,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:27:52,931 INFO L87 Difference]: Start difference. First operand 61302 states and 85440 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:27:57,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:57,700 INFO L93 Difference]: Finished difference Result 181438 states and 255666 transitions. [2021-12-06 22:27:57,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:27:57,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 184 [2021-12-06 22:27:57,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:58,035 INFO L225 Difference]: With dead ends: 181438 [2021-12-06 22:27:58,035 INFO L226 Difference]: Without dead ends: 120156 [2021-12-06 22:27:58,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:27:58,158 INFO L933 BasicCegarLoop]: 416 mSDtfsCounter, 189 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:58,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 633 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:27:58,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120156 states. [2021-12-06 22:28:03,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120156 to 120110. [2021-12-06 22:28:03,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120110 states, 104480 states have (on average 1.3764069678407351) internal successors, (143807), 105404 states have internal predecessors, (143807), 8609 states have call successors, (8609), 6252 states have call predecessors, (8609), 7020 states have return successors, (16532), 8517 states have call predecessors, (16532), 8609 states have call successors, (16532) [2021-12-06 22:28:03,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120110 states to 120110 states and 168948 transitions. [2021-12-06 22:28:03,721 INFO L78 Accepts]: Start accepts. Automaton has 120110 states and 168948 transitions. Word has length 184 [2021-12-06 22:28:03,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:28:03,722 INFO L470 AbstractCegarLoop]: Abstraction has 120110 states and 168948 transitions. [2021-12-06 22:28:03,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:28:03,722 INFO L276 IsEmpty]: Start isEmpty. Operand 120110 states and 168948 transitions. [2021-12-06 22:28:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 22:28:03,903 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:28:03,903 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:28:03,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:28:04,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 22:28:04,105 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:28:04,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:28:04,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1174614555, now seen corresponding path program 1 times [2021-12-06 22:28:04,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:28:04,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390495595] [2021-12-06 22:28:04,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:04,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:28:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:04,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:28:04,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:04,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:28:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:04,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:28:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:04,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:28:04,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:04,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:28:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:04,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:28:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:04,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:28:04,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:04,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:28:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:04,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:28:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:04,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:28:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:04,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 22:28:04,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-06 22:28:04,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:28:04,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390495595] [2021-12-06 22:28:04,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390495595] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:28:04,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870530806] [2021-12-06 22:28:04,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:04,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:28:04,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:28:04,197 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:28:04,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:28:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:04,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:28:04,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:28:04,438 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 22:28:04,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:28:04,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870530806] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:28:04,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:28:04,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:28:04,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767511451] [2021-12-06 22:28:04,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:28:04,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:28:04,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:28:04,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:28:04,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:28:04,440 INFO L87 Difference]: Start difference. First operand 120110 states and 168948 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:28:10,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:28:10,257 INFO L93 Difference]: Finished difference Result 252868 states and 361023 transitions. [2021-12-06 22:28:10,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:28:10,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 184 [2021-12-06 22:28:10,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:28:10,601 INFO L225 Difference]: With dead ends: 252868 [2021-12-06 22:28:10,601 INFO L226 Difference]: Without dead ends: 132790 [2021-12-06 22:28:10,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:28:10,810 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 145 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:28:10,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 259 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:28:10,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132790 states. [2021-12-06 22:28:17,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132790 to 132530. [2021-12-06 22:28:17,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132530 states, 116348 states have (on average 1.3453690652181387) internal successors, (156531), 117272 states have internal predecessors, (156531), 8669 states have call successors, (8669), 6744 states have call predecessors, (8669), 7512 states have return successors, (16438), 8577 states have call predecessors, (16438), 8669 states have call successors, (16438) [2021-12-06 22:28:17,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132530 states to 132530 states and 181638 transitions. [2021-12-06 22:28:17,374 INFO L78 Accepts]: Start accepts. Automaton has 132530 states and 181638 transitions. Word has length 184 [2021-12-06 22:28:17,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:28:17,374 INFO L470 AbstractCegarLoop]: Abstraction has 132530 states and 181638 transitions. [2021-12-06 22:28:17,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:28:17,374 INFO L276 IsEmpty]: Start isEmpty. Operand 132530 states and 181638 transitions. [2021-12-06 22:28:17,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 22:28:17,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:28:17,572 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:28:17,594 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 22:28:17,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:28:17,773 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:28:17,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:28:17,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1912711870, now seen corresponding path program 1 times [2021-12-06 22:28:17,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:28:17,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121349590] [2021-12-06 22:28:17,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:17,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:28:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:17,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:28:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:17,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:28:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:17,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:28:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:17,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:28:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:17,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:28:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:17,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:28:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:28:17,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:17,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:28:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:17,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:28:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:17,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:28:17,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:17,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 22:28:17,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-12-06 22:28:17,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:28:17,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121349590] [2021-12-06 22:28:17,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121349590] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:28:17,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349167219] [2021-12-06 22:28:17,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:17,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:28:17,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:28:17,884 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:28:17,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 22:28:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:17,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:28:17,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:28:18,100 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 22:28:18,100 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:28:18,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349167219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:28:18,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:28:18,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:28:18,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764325463] [2021-12-06 22:28:18,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:28:18,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:28:18,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:28:18,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:28:18,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:28:18,101 INFO L87 Difference]: Start difference. First operand 132530 states and 181638 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:28:28,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:28:28,732 INFO L93 Difference]: Finished difference Result 379478 states and 527510 transitions. [2021-12-06 22:28:28,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:28:28,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 184 [2021-12-06 22:28:28,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:28:29,437 INFO L225 Difference]: With dead ends: 379478 [2021-12-06 22:28:29,437 INFO L226 Difference]: Without dead ends: 246980 [2021-12-06 22:28:29,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:28:29,678 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 176 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:28:29,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 626 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:28:29,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246980 states. [2021-12-06 22:28:41,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246980 to 246978. [2021-12-06 22:28:41,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246978 states, 216280 states have (on average 1.3409977806547069) internal successors, (290031), 218128 states have internal predecessors, (290031), 16505 states have call successors, (16505), 12656 states have call predecessors, (16505), 14192 states have return successors, (36860), 16321 states have call predecessors, (36860), 16505 states have call successors, (36860) [2021-12-06 22:28:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246978 states to 246978 states and 343396 transitions. [2021-12-06 22:28:42,067 INFO L78 Accepts]: Start accepts. Automaton has 246978 states and 343396 transitions. Word has length 184 [2021-12-06 22:28:42,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:28:42,067 INFO L470 AbstractCegarLoop]: Abstraction has 246978 states and 343396 transitions. [2021-12-06 22:28:42,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:28:42,068 INFO L276 IsEmpty]: Start isEmpty. Operand 246978 states and 343396 transitions. [2021-12-06 22:28:42,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 22:28:42,421 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:28:42,422 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:28:42,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 22:28:42,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 22:28:42,624 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:28:42,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:28:42,625 INFO L85 PathProgramCache]: Analyzing trace with hash 693335408, now seen corresponding path program 1 times [2021-12-06 22:28:42,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:28:42,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492634265] [2021-12-06 22:28:42,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:42,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:28:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:42,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:28:42,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:42,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:28:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:42,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:28:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:42,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:28:42,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:42,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:28:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:42,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 22:28:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:42,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:28:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:42,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 22:28:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:42,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:28:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:42,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:28:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:42,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 22:28:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-12-06 22:28:42,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:28:42,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492634265] [2021-12-06 22:28:42,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492634265] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:28:42,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999731713] [2021-12-06 22:28:42,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:28:42,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:28:42,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:28:42,705 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:28:42,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 22:28:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:28:42,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 602 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:28:42,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:28:42,867 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 22:28:42,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:28:42,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999731713] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:28:42,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:28:42,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:28:42,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675147042] [2021-12-06 22:28:42,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:28:42,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:28:42,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:28:42,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:28:42,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:28:42,869 INFO L87 Difference]: Start difference. First operand 246978 states and 343396 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:28:57,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:28:57,960 INFO L93 Difference]: Finished difference Result 492694 states and 694470 transitions. [2021-12-06 22:28:57,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:28:57,960 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 184 [2021-12-06 22:28:57,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:28:58,928 INFO L225 Difference]: With dead ends: 492694 [2021-12-06 22:28:58,928 INFO L226 Difference]: Without dead ends: 352412 [2021-12-06 22:28:59,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:28:59,191 INFO L933 BasicCegarLoop]: 403 mSDtfsCounter, 169 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 618 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:28:59,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 618 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:28:59,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352412 states. [2021-12-06 22:29:15,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352412 to 352410. [2021-12-06 22:29:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352410 states, 308104 states have (on average 1.3406349803962299) internal successors, (413055), 310872 states have internal predecessors, (413055), 23881 states have call successors, (23881), 18120 states have call predecessors, (23881), 20424 states have return successors, (59084), 23545 states have call predecessors, (59084), 23881 states have call successors, (59084) [2021-12-06 22:29:17,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352410 states to 352410 states and 496020 transitions. [2021-12-06 22:29:17,368 INFO L78 Accepts]: Start accepts. Automaton has 352410 states and 496020 transitions. Word has length 184 [2021-12-06 22:29:17,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:17,368 INFO L470 AbstractCegarLoop]: Abstraction has 352410 states and 496020 transitions. [2021-12-06 22:29:17,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:29:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 352410 states and 496020 transitions. [2021-12-06 22:29:17,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 22:29:17,860 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:17,861 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:17,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 22:29:18,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:18,062 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:18,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:18,063 INFO L85 PathProgramCache]: Analyzing trace with hash 103678690, now seen corresponding path program 1 times [2021-12-06 22:29:18,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:18,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560003609] [2021-12-06 22:29:18,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:18,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:18,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:18,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:29:18,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:18,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:29:18,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:18,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:29:18,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:18,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:29:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:18,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:29:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:18,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:29:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:18,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:29:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:18,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:29:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:18,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 22:29:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:18,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:29:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:18,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 22:29:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:18,170 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-06 22:29:18,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:18,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560003609] [2021-12-06 22:29:18,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560003609] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:29:18,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834794404] [2021-12-06 22:29:18,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:18,171 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:18,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:18,171 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:18,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 22:29:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:18,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:29:18,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:18,364 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-06 22:29:18,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:29:18,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834794404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:29:18,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:29:18,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:29:18,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188278991] [2021-12-06 22:29:18,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:29:18,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:29:18,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:18,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:29:18,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:29:18,366 INFO L87 Difference]: Start difference. First operand 352410 states and 496020 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:29:35,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:29:35,637 INFO L93 Difference]: Finished difference Result 715558 states and 1010566 transitions. [2021-12-06 22:29:35,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:29:35,637 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 184 [2021-12-06 22:29:35,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:29:36,832 INFO L225 Difference]: With dead ends: 715558 [2021-12-06 22:29:36,832 INFO L226 Difference]: Without dead ends: 363196 [2021-12-06 22:29:37,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:29:37,375 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 171 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:29:37,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 432 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:29:37,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363196 states. [2021-12-06 22:29:54,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363196 to 351546. [2021-12-06 22:29:54,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351546 states, 307240 states have (on average 1.3317504231219894) internal successors, (409167), 310008 states have internal predecessors, (409167), 23881 states have call successors, (23881), 18120 states have call predecessors, (23881), 20424 states have return successors, (59084), 23545 states have call predecessors, (59084), 23881 states have call successors, (59084) [2021-12-06 22:29:55,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351546 states to 351546 states and 492132 transitions. [2021-12-06 22:29:55,602 INFO L78 Accepts]: Start accepts. Automaton has 351546 states and 492132 transitions. Word has length 184 [2021-12-06 22:29:55,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:29:55,603 INFO L470 AbstractCegarLoop]: Abstraction has 351546 states and 492132 transitions. [2021-12-06 22:29:55,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:29:55,603 INFO L276 IsEmpty]: Start isEmpty. Operand 351546 states and 492132 transitions. [2021-12-06 22:29:55,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 22:29:55,980 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:29:55,980 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:29:56,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 22:29:56,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:56,182 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:29:56,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:29:56,183 INFO L85 PathProgramCache]: Analyzing trace with hash -817566188, now seen corresponding path program 1 times [2021-12-06 22:29:56,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:29:56,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504638741] [2021-12-06 22:29:56,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:56,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:29:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:56,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:29:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:56,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:29:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:56,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:29:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:56,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:29:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:56,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:29:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:56,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:29:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:29:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:56,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:29:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:56,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:29:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:29:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:56,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 22:29:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-06 22:29:56,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:29:56,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504638741] [2021-12-06 22:29:56,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504638741] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:29:56,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198465345] [2021-12-06 22:29:56,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:29:56,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:29:56,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:29:56,269 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:29:56,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 22:29:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:29:56,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:29:56,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:29:56,461 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 22:29:56,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:29:56,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198465345] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:29:56,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:29:56,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:29:56,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112400674] [2021-12-06 22:29:56,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:29:56,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:29:56,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:29:56,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:29:56,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:29:56,463 INFO L87 Difference]: Start difference. First operand 351546 states and 492132 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:30:12,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:12,173 INFO L93 Difference]: Finished difference Result 631308 states and 916875 transitions. [2021-12-06 22:30:12,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:30:12,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 184 [2021-12-06 22:30:12,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:13,186 INFO L225 Difference]: With dead ends: 631308 [2021-12-06 22:30:13,186 INFO L226 Difference]: Without dead ends: 324930 [2021-12-06 22:30:13,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:30:13,873 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 169 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:13,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 282 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:30:14,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324930 states. [2021-12-06 22:30:30,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324930 to 321034. [2021-12-06 22:30:30,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321034 states, 281856 states have (on average 1.3165978371934606) internal successors, (371091), 283868 states have internal predecessors, (371091), 21081 states have call successors, (21081), 16376 states have call predecessors, (21081), 18096 states have return successors, (56680), 20853 states have call predecessors, (56680), 21081 states have call successors, (56680) [2021-12-06 22:30:31,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321034 states to 321034 states and 448852 transitions. [2021-12-06 22:30:31,703 INFO L78 Accepts]: Start accepts. Automaton has 321034 states and 448852 transitions. Word has length 184 [2021-12-06 22:30:31,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:30:31,703 INFO L470 AbstractCegarLoop]: Abstraction has 321034 states and 448852 transitions. [2021-12-06 22:30:31,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:30:31,704 INFO L276 IsEmpty]: Start isEmpty. Operand 321034 states and 448852 transitions. [2021-12-06 22:30:31,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 22:30:31,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:30:31,883 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:30:31,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 22:30:32,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-06 22:30:32,084 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:30:32,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:30:32,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1929096362, now seen corresponding path program 1 times [2021-12-06 22:30:32,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:30:32,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146046131] [2021-12-06 22:30:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:32,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:30:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:32,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:30:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:32,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:30:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:32,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:30:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:32,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:30:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:32,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:30:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:30:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:30:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:32,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:30:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:32,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:30:32,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:32,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:30:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:32,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 22:30:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:32,186 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-06 22:30:32,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:30:32,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146046131] [2021-12-06 22:30:32,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146046131] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:30:32,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939230089] [2021-12-06 22:30:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:30:32,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:30:32,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:30:32,187 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:30:32,188 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 22:30:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:30:32,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 605 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:30:32,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:30:32,369 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-06 22:30:32,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:30:32,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939230089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:30:32,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:30:32,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:30:32,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890175440] [2021-12-06 22:30:32,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:30:32,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:30:32,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:30:32,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:30:32,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:30:32,370 INFO L87 Difference]: Start difference. First operand 321034 states and 448852 transitions. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:30:49,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:30:49,193 INFO L93 Difference]: Finished difference Result 601942 states and 843830 transitions. [2021-12-06 22:30:49,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:30:49,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 184 [2021-12-06 22:30:49,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:30:50,303 INFO L225 Difference]: With dead ends: 601942 [2021-12-06 22:30:50,303 INFO L226 Difference]: Without dead ends: 335576 [2021-12-06 22:30:50,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:30:50,857 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 167 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:30:50,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 468 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:30:51,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335576 states. [2021-12-06 22:31:07,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335576 to 330606. [2021-12-06 22:31:08,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330606 states, 291068 states have (on average 1.3110647683702776) internal successors, (381609), 293080 states have internal predecessors, (381609), 21081 states have call successors, (21081), 16736 states have call predecessors, (21081), 18456 states have return successors, (57760), 20853 states have call predecessors, (57760), 21081 states have call successors, (57760) [2021-12-06 22:31:09,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330606 states to 330606 states and 460450 transitions. [2021-12-06 22:31:09,253 INFO L78 Accepts]: Start accepts. Automaton has 330606 states and 460450 transitions. Word has length 184 [2021-12-06 22:31:09,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:09,253 INFO L470 AbstractCegarLoop]: Abstraction has 330606 states and 460450 transitions. [2021-12-06 22:31:09,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:31:09,254 INFO L276 IsEmpty]: Start isEmpty. Operand 330606 states and 460450 transitions. [2021-12-06 22:31:09,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-12-06 22:31:09,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:09,650 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:09,670 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 22:31:09,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 22:31:09,851 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:31:09,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:09,851 INFO L85 PathProgramCache]: Analyzing trace with hash 796645272, now seen corresponding path program 1 times [2021-12-06 22:31:09,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:31:09,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084833814] [2021-12-06 22:31:09,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:09,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:31:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:09,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:31:09,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:09,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:31:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:09,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:31:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:09,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:31:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:09,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:31:09,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:09,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:31:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:09,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:31:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:09,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:31:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:09,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:31:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:09,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:31:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:09,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 22:31:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:09,916 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-12-06 22:31:09,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:31:09,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084833814] [2021-12-06 22:31:09,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084833814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:31:09,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:31:09,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:31:09,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829628223] [2021-12-06 22:31:09,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:31:09,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:31:09,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:31:09,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:31:09,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:31:09,918 INFO L87 Difference]: Start difference. First operand 330606 states and 460450 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:31:30,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:31:30,604 INFO L93 Difference]: Finished difference Result 695266 states and 958131 transitions. [2021-12-06 22:31:30,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:31:30,605 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 184 [2021-12-06 22:31:30,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:31:31,756 INFO L225 Difference]: With dead ends: 695266 [2021-12-06 22:31:31,757 INFO L226 Difference]: Without dead ends: 364684 [2021-12-06 22:31:32,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:31:32,281 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 360 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:31:32,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 377 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:31:32,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364684 states. [2021-12-06 22:31:52,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364684 to 344800. [2021-12-06 22:31:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344800 states, 306678 states have (on average 1.3061615114224039) internal successors, (400571), 312148 states have internal predecessors, (400571), 17405 states have call successors, (17405), 13888 states have call predecessors, (17405), 20716 states have return successors, (53083), 18795 states have call predecessors, (53083), 17405 states have call successors, (53083) [2021-12-06 22:31:53,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344800 states to 344800 states and 471059 transitions. [2021-12-06 22:31:53,554 INFO L78 Accepts]: Start accepts. Automaton has 344800 states and 471059 transitions. Word has length 184 [2021-12-06 22:31:53,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:31:53,554 INFO L470 AbstractCegarLoop]: Abstraction has 344800 states and 471059 transitions. [2021-12-06 22:31:53,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:31:53,554 INFO L276 IsEmpty]: Start isEmpty. Operand 344800 states and 471059 transitions. [2021-12-06 22:31:53,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-06 22:31:53,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:31:53,690 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:31:53,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 22:31:53,690 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:31:53,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:31:53,691 INFO L85 PathProgramCache]: Analyzing trace with hash 125391902, now seen corresponding path program 1 times [2021-12-06 22:31:53,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:31:53,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620762859] [2021-12-06 22:31:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:53,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:31:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:53,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:31:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:53,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:31:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:31:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:53,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:31:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:53,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:31:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:53,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:31:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:53,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:31:53,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:53,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:31:53,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:53,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:31:53,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:53,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:31:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:53,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-06 22:31:53,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:53,756 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-06 22:31:53,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:31:53,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620762859] [2021-12-06 22:31:53,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620762859] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:31:53,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33631936] [2021-12-06 22:31:53,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:31:53,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:31:53,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:31:53,758 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:31:53,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 22:31:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:31:53,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:31:53,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:31:53,930 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-06 22:31:53,930 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:31:53,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33631936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:31:53,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:31:53,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:31:53,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850060003] [2021-12-06 22:31:53,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:31:53,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:31:53,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:31:53,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:31:53,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:31:53,931 INFO L87 Difference]: Start difference. First operand 344800 states and 471059 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:32:12,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:32:12,854 INFO L93 Difference]: Finished difference Result 611880 states and 834573 transitions. [2021-12-06 22:32:12,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:32:12,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 186 [2021-12-06 22:32:12,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:32:13,914 INFO L225 Difference]: With dead ends: 611880 [2021-12-06 22:32:13,914 INFO L226 Difference]: Without dead ends: 347658 [2021-12-06 22:32:14,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:32:14,411 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 173 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:32:14,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 452 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:32:14,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347658 states. [2021-12-06 22:32:33,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347658 to 344800. [2021-12-06 22:32:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344800 states, 306678 states have (on average 1.303246401763413) internal successors, (399677), 312148 states have internal predecessors, (399677), 17405 states have call successors, (17405), 13888 states have call predecessors, (17405), 20716 states have return successors, (53083), 18795 states have call predecessors, (53083), 17405 states have call successors, (53083) [2021-12-06 22:32:35,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344800 states to 344800 states and 470165 transitions. [2021-12-06 22:32:35,231 INFO L78 Accepts]: Start accepts. Automaton has 344800 states and 470165 transitions. Word has length 186 [2021-12-06 22:32:35,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:32:35,231 INFO L470 AbstractCegarLoop]: Abstraction has 344800 states and 470165 transitions. [2021-12-06 22:32:35,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:32:35,232 INFO L276 IsEmpty]: Start isEmpty. Operand 344800 states and 470165 transitions. [2021-12-06 22:32:35,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-12-06 22:32:35,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:32:35,557 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:32:35,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-06 22:32:35,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-12-06 22:32:35,757 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:32:35,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:32:35,758 INFO L85 PathProgramCache]: Analyzing trace with hash 812131998, now seen corresponding path program 1 times [2021-12-06 22:32:35,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:32:35,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107224178] [2021-12-06 22:32:35,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:32:35,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:32:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:35,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:32:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:35,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:32:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:35,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:32:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:35,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:32:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:35,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:32:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:35,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:32:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:35,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 22:32:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:35,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:32:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:35,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:32:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:35,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:32:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:35,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-06 22:32:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:32:35,809 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2021-12-06 22:32:35,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:32:35,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107224178] [2021-12-06 22:32:35,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107224178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:32:35,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:32:35,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:32:35,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5155714] [2021-12-06 22:32:35,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:32:35,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:32:35,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:32:35,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:32:35,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:32:35,811 INFO L87 Difference]: Start difference. First operand 344800 states and 470165 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:32:51,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:32:51,971 INFO L93 Difference]: Finished difference Result 622756 states and 846924 transitions. [2021-12-06 22:32:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:32:51,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 186 [2021-12-06 22:32:51,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:32:52,880 INFO L225 Difference]: With dead ends: 622756 [2021-12-06 22:32:52,880 INFO L226 Difference]: Without dead ends: 277974 [2021-12-06 22:32:53,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:32:53,324 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 357 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:32:53,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 375 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:32:53,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277974 states. [2021-12-06 22:33:09,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277974 to 261770. [2021-12-06 22:33:09,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261770 states, 233122 states have (on average 1.3074227228661388) internal successors, (304789), 237132 states have internal predecessors, (304789), 13115 states have call successors, (13115), 10504 states have call predecessors, (13115), 15532 states have return successors, (37481), 14149 states have call predecessors, (37481), 13115 states have call successors, (37481) [2021-12-06 22:33:09,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261770 states to 261770 states and 355385 transitions. [2021-12-06 22:33:09,933 INFO L78 Accepts]: Start accepts. Automaton has 261770 states and 355385 transitions. Word has length 186 [2021-12-06 22:33:09,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:33:09,933 INFO L470 AbstractCegarLoop]: Abstraction has 261770 states and 355385 transitions. [2021-12-06 22:33:09,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:33:09,934 INFO L276 IsEmpty]: Start isEmpty. Operand 261770 states and 355385 transitions. [2021-12-06 22:33:10,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-06 22:33:10,037 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:33:10,037 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:33:10,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 22:33:10,037 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:33:10,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:33:10,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1524523294, now seen corresponding path program 1 times [2021-12-06 22:33:10,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:33:10,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78734344] [2021-12-06 22:33:10,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:33:10,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:33:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:10,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:33:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:10,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:33:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:10,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:33:10,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:10,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:33:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:10,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:33:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:10,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:33:10,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:10,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:33:10,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:10,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:33:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:10,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:33:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:10,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:33:10,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:10,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 22:33:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:10,105 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 22:33:10,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:33:10,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78734344] [2021-12-06 22:33:10,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78734344] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:33:10,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277245898] [2021-12-06 22:33:10,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:33:10,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:33:10,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:33:10,107 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:33:10,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 22:33:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:10,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:33:10,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:33:10,300 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-06 22:33:10,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:33:10,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277245898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:33:10,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:33:10,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:33:10,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133781548] [2021-12-06 22:33:10,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:33:10,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:33:10,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:33:10,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:33:10,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:33:10,301 INFO L87 Difference]: Start difference. First operand 261770 states and 355385 transitions. Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:33:25,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:33:25,735 INFO L93 Difference]: Finished difference Result 471568 states and 664097 transitions. [2021-12-06 22:33:25,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:33:25,736 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 188 [2021-12-06 22:33:25,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:33:26,598 INFO L225 Difference]: With dead ends: 471568 [2021-12-06 22:33:26,599 INFO L226 Difference]: Without dead ends: 261916 [2021-12-06 22:33:26,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:33:26,981 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 166 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:33:26,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 544 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:33:27,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261916 states. [2021-12-06 22:33:42,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261916 to 261338. [2021-12-06 22:33:42,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261338 states, 232690 states have (on average 1.2870557393957627) internal successors, (299485), 236700 states have internal predecessors, (299485), 13115 states have call successors, (13115), 10504 states have call predecessors, (13115), 15532 states have return successors, (37481), 14149 states have call predecessors, (37481), 13115 states have call successors, (37481) [2021-12-06 22:33:43,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261338 states to 261338 states and 350081 transitions. [2021-12-06 22:33:43,651 INFO L78 Accepts]: Start accepts. Automaton has 261338 states and 350081 transitions. Word has length 188 [2021-12-06 22:33:43,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:33:43,651 INFO L470 AbstractCegarLoop]: Abstraction has 261338 states and 350081 transitions. [2021-12-06 22:33:43,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 3 states have internal predecessors, (148), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:33:43,651 INFO L276 IsEmpty]: Start isEmpty. Operand 261338 states and 350081 transitions. [2021-12-06 22:33:43,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-06 22:33:43,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:33:43,754 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:33:43,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-06 22:33:43,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:33:43,956 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:33:43,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:33:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1709414526, now seen corresponding path program 1 times [2021-12-06 22:33:43,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:33:43,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886789347] [2021-12-06 22:33:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:33:43,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:33:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:43,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:33:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:44,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:33:44,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:44,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:33:44,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:44,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:33:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:44,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:33:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:44,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:33:44,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:44,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:33:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:44,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:33:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:44,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:33:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:44,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:33:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:44,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 22:33:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 22:33:44,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:33:44,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886789347] [2021-12-06 22:33:44,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886789347] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:33:44,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083193006] [2021-12-06 22:33:44,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:33:44,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:33:44,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:33:44,058 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:33:44,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 22:33:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:33:44,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:33:44,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:33:44,237 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:33:44,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:33:44,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083193006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:33:44,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:33:44,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:33:44,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233113794] [2021-12-06 22:33:44,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:33:44,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:33:44,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:33:44,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:33:44,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:33:44,239 INFO L87 Difference]: Start difference. First operand 261338 states and 350081 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:33:57,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:33:57,778 INFO L93 Difference]: Finished difference Result 460528 states and 632404 transitions. [2021-12-06 22:33:57,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:33:57,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 188 [2021-12-06 22:33:57,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:33:58,343 INFO L225 Difference]: With dead ends: 460528 [2021-12-06 22:33:58,344 INFO L226 Difference]: Without dead ends: 210058 [2021-12-06 22:33:58,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:33:58,747 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 191 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:33:58,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 259 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:33:58,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210058 states. [2021-12-06 22:34:11,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210058 to 202068. [2021-12-06 22:34:11,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202068 states, 180314 states have (on average 1.2517885466464058) internal successors, (225715), 183347 states have internal predecessors, (225715), 9963 states have call successors, (9963), 8024 states have call predecessors, (9963), 11790 states have return successors, (26596), 10704 states have call predecessors, (26596), 9963 states have call successors, (26596) [2021-12-06 22:34:12,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202068 states to 202068 states and 262274 transitions. [2021-12-06 22:34:12,139 INFO L78 Accepts]: Start accepts. Automaton has 202068 states and 262274 transitions. Word has length 188 [2021-12-06 22:34:12,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:34:12,139 INFO L470 AbstractCegarLoop]: Abstraction has 202068 states and 262274 transitions. [2021-12-06 22:34:12,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:34:12,139 INFO L276 IsEmpty]: Start isEmpty. Operand 202068 states and 262274 transitions. [2021-12-06 22:34:12,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-06 22:34:12,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:34:12,206 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:34:12,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 22:34:12,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 22:34:12,407 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:34:12,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:34:12,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1722684316, now seen corresponding path program 1 times [2021-12-06 22:34:12,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:34:12,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227421703] [2021-12-06 22:34:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:34:12,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:34:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:12,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:34:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:12,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:34:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:12,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:34:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:12,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:34:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:12,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:34:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:12,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:34:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:12,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:34:12,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:12,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:34:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:12,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 22:34:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:12,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:34:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:12,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 22:34:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:12,505 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 22:34:12,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:34:12,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227421703] [2021-12-06 22:34:12,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227421703] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:34:12,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449342735] [2021-12-06 22:34:12,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:34:12,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:34:12,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:34:12,506 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:34:12,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 22:34:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:12,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:34:12,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:34:12,672 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 22:34:12,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:34:12,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449342735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:34:12,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:34:12,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:34:12,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034800570] [2021-12-06 22:34:12,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:34:12,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:34:12,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:34:12,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:34:12,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:34:12,673 INFO L87 Difference]: Start difference. First operand 202068 states and 262274 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:34:25,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:34:25,040 INFO L93 Difference]: Finished difference Result 343928 states and 460832 transitions. [2021-12-06 22:34:25,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:34:25,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 188 [2021-12-06 22:34:25,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:34:25,582 INFO L225 Difference]: With dead ends: 343928 [2021-12-06 22:34:25,582 INFO L226 Difference]: Without dead ends: 202114 [2021-12-06 22:34:25,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:34:25,845 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 159 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:34:25,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 581 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:34:25,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202114 states. [2021-12-06 22:34:38,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202114 to 201504. [2021-12-06 22:34:38,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201504 states, 179750 states have (on average 1.231115438108484) internal successors, (221293), 182783 states have internal predecessors, (221293), 9963 states have call successors, (9963), 8024 states have call predecessors, (9963), 11790 states have return successors, (26596), 10704 states have call predecessors, (26596), 9963 states have call successors, (26596) [2021-12-06 22:34:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201504 states to 201504 states and 257852 transitions. [2021-12-06 22:34:39,210 INFO L78 Accepts]: Start accepts. Automaton has 201504 states and 257852 transitions. Word has length 188 [2021-12-06 22:34:39,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:34:39,211 INFO L470 AbstractCegarLoop]: Abstraction has 201504 states and 257852 transitions. [2021-12-06 22:34:39,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:34:39,211 INFO L276 IsEmpty]: Start isEmpty. Operand 201504 states and 257852 transitions. [2021-12-06 22:34:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-06 22:34:39,275 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:34:39,276 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:34:39,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-12-06 22:34:39,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-06 22:34:39,478 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:34:39,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:34:39,479 INFO L85 PathProgramCache]: Analyzing trace with hash -984301511, now seen corresponding path program 1 times [2021-12-06 22:34:39,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:34:39,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794049485] [2021-12-06 22:34:39,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:34:39,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:34:39,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:39,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:34:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:39,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:34:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:39,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:34:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:39,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:34:39,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:39,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:34:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:39,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:34:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:39,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:34:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:39,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:34:39,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:39,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 22:34:39,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:39,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:34:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:39,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 22:34:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:39,568 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-06 22:34:39,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:34:39,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794049485] [2021-12-06 22:34:39,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794049485] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:34:39,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095978263] [2021-12-06 22:34:39,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:34:39,569 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:34:39,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:34:39,570 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:34:39,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-06 22:34:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:34:39,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:34:39,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:34:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 22:34:39,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:34:39,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095978263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:34:39,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:34:39,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:34:39,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105450282] [2021-12-06 22:34:39,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:34:39,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:34:39,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:34:39,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:34:39,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:34:39,755 INFO L87 Difference]: Start difference. First operand 201504 states and 257852 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:34:52,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:34:52,392 INFO L93 Difference]: Finished difference Result 341444 states and 451858 transitions. [2021-12-06 22:34:52,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:34:52,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 188 [2021-12-06 22:34:52,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:34:52,931 INFO L225 Difference]: With dead ends: 341444 [2021-12-06 22:34:52,931 INFO L226 Difference]: Without dead ends: 202106 [2021-12-06 22:34:53,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:34:53,168 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 155 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:34:53,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 585 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:34:53,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202106 states. [2021-12-06 22:35:06,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202106 to 201504. [2021-12-06 22:35:06,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201504 states, 179750 states have (on average 1.2091070931849792) internal successors, (217337), 182783 states have internal predecessors, (217337), 9963 states have call successors, (9963), 8024 states have call predecessors, (9963), 11790 states have return successors, (26596), 10704 states have call predecessors, (26596), 9963 states have call successors, (26596) [2021-12-06 22:35:06,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201504 states to 201504 states and 253896 transitions. [2021-12-06 22:35:06,745 INFO L78 Accepts]: Start accepts. Automaton has 201504 states and 253896 transitions. Word has length 188 [2021-12-06 22:35:06,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:06,745 INFO L470 AbstractCegarLoop]: Abstraction has 201504 states and 253896 transitions. [2021-12-06 22:35:06,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:35:06,746 INFO L276 IsEmpty]: Start isEmpty. Operand 201504 states and 253896 transitions. [2021-12-06 22:35:06,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-06 22:35:06,810 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:06,811 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:06,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-06 22:35:07,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-06 22:35:07,013 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:35:07,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:07,014 INFO L85 PathProgramCache]: Analyzing trace with hash -385589103, now seen corresponding path program 1 times [2021-12-06 22:35:07,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:07,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62665319] [2021-12-06 22:35:07,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:07,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:07,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:35:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:07,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:35:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:07,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:35:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:07,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:35:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:07,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:35:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:07,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:35:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:07,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:35:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:07,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:35:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:07,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:35:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:07,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:35:07,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:07,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 22:35:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:07,111 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 22:35:07,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:07,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62665319] [2021-12-06 22:35:07,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62665319] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:35:07,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601522287] [2021-12-06 22:35:07,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:07,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:35:07,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:35:07,112 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:35:07,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-06 22:35:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:07,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:35:07,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:35:07,414 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 22:35:07,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:35:07,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601522287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:35:07,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:35:07,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2021-12-06 22:35:07,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148227586] [2021-12-06 22:35:07,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:35:07,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:35:07,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:07,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:35:07,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:35:07,416 INFO L87 Difference]: Start difference. First operand 201504 states and 253896 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:35:20,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:20,358 INFO L93 Difference]: Finished difference Result 300771 states and 388186 transitions. [2021-12-06 22:35:20,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:35:20,359 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 189 [2021-12-06 22:35:20,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:20,882 INFO L225 Difference]: With dead ends: 300771 [2021-12-06 22:35:20,882 INFO L226 Difference]: Without dead ends: 201726 [2021-12-06 22:35:21,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:35:21,096 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 182 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 576 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:21,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 576 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:35:21,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201726 states. [2021-12-06 22:35:34,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201726 to 201504. [2021-12-06 22:35:34,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201504 states, 179750 states have (on average 1.2007399165507648) internal successors, (215833), 182783 states have internal predecessors, (215833), 9963 states have call successors, (9963), 8024 states have call predecessors, (9963), 11790 states have return successors, (26596), 10704 states have call predecessors, (26596), 9963 states have call successors, (26596) [2021-12-06 22:35:34,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201504 states to 201504 states and 252392 transitions. [2021-12-06 22:35:34,590 INFO L78 Accepts]: Start accepts. Automaton has 201504 states and 252392 transitions. Word has length 189 [2021-12-06 22:35:34,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:34,590 INFO L470 AbstractCegarLoop]: Abstraction has 201504 states and 252392 transitions. [2021-12-06 22:35:34,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:35:34,590 INFO L276 IsEmpty]: Start isEmpty. Operand 201504 states and 252392 transitions. [2021-12-06 22:35:34,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 22:35:34,655 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:34,655 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:34,677 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-12-06 22:35:34,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:35:34,857 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:35:34,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:34,858 INFO L85 PathProgramCache]: Analyzing trace with hash -376119738, now seen corresponding path program 1 times [2021-12-06 22:35:34,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:34,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347105348] [2021-12-06 22:35:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:34,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:34,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:35:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:34,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:35:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:34,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:35:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:34,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:35:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:34,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:35:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:34,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:35:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:34,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:35:34,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:34,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:35:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:34,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:35:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:34,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:35:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 22:35:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:34,926 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 22:35:34,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:34,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347105348] [2021-12-06 22:35:34,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347105348] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:35:34,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297386222] [2021-12-06 22:35:34,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:34,926 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:35:34,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:35:34,927 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:35:34,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-06 22:35:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:34,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:35:34,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:35:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-12-06 22:35:35,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:35:35,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297386222] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:35:35,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:35:35,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2021-12-06 22:35:35,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512408903] [2021-12-06 22:35:35,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:35:35,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:35:35,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:35,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:35:35,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:35:35,151 INFO L87 Difference]: Start difference. First operand 201504 states and 252392 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:35:43,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:35:43,746 INFO L93 Difference]: Finished difference Result 257564 states and 324885 transitions. [2021-12-06 22:35:43,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:35:43,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 190 [2021-12-06 22:35:43,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:35:44,069 INFO L225 Difference]: With dead ends: 257564 [2021-12-06 22:35:44,069 INFO L226 Difference]: Without dead ends: 131738 [2021-12-06 22:35:44,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:35:44,248 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 222 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:35:44,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 400 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:35:44,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131738 states. [2021-12-06 22:35:52,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131738 to 131102. [2021-12-06 22:35:52,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131102 states, 117026 states have (on average 1.182942252149095) internal successors, (138435), 118892 states have internal predecessors, (138435), 6499 states have call successors, (6499), 5232 states have call predecessors, (6499), 7576 states have return successors, (17079), 6981 states have call predecessors, (17079), 6499 states have call successors, (17079) [2021-12-06 22:35:53,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131102 states to 131102 states and 162013 transitions. [2021-12-06 22:35:53,271 INFO L78 Accepts]: Start accepts. Automaton has 131102 states and 162013 transitions. Word has length 190 [2021-12-06 22:35:53,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:35:53,271 INFO L470 AbstractCegarLoop]: Abstraction has 131102 states and 162013 transitions. [2021-12-06 22:35:53,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:35:53,271 INFO L276 IsEmpty]: Start isEmpty. Operand 131102 states and 162013 transitions. [2021-12-06 22:35:53,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 22:35:53,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:35:53,304 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:35:53,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2021-12-06 22:35:53,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-12-06 22:35:53,506 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:35:53,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:35:53,507 INFO L85 PathProgramCache]: Analyzing trace with hash 41768964, now seen corresponding path program 1 times [2021-12-06 22:35:53,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:35:53,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936091125] [2021-12-06 22:35:53,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:53,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:35:53,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:53,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:35:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:53,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:35:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:53,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:35:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:53,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:35:53,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:53,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:35:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:53,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:35:53,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:53,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:35:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:53,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:35:53,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:53,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:35:53,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:53,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:35:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:53,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 22:35:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:53,586 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 22:35:53,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:35:53,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936091125] [2021-12-06 22:35:53,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936091125] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:35:53,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009716036] [2021-12-06 22:35:53,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:35:53,587 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:35:53,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:35:53,587 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:35:53,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-06 22:35:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:35:53,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:35:53,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:35:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-12-06 22:35:53,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:35:53,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009716036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:35:53,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:35:53,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2021-12-06 22:35:53,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626887206] [2021-12-06 22:35:53,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:35:53,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:35:53,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:35:53,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:35:53,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:35:53,791 INFO L87 Difference]: Start difference. First operand 131102 states and 162013 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:36:02,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:02,600 INFO L93 Difference]: Finished difference Result 261396 states and 324984 transitions. [2021-12-06 22:36:02,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:36:02,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 190 [2021-12-06 22:36:02,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:02,927 INFO L225 Difference]: With dead ends: 261396 [2021-12-06 22:36:02,927 INFO L226 Difference]: Without dead ends: 130310 [2021-12-06 22:36:03,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:36:03,111 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 219 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:03,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 393 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:36:03,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130310 states. [2021-12-06 22:36:11,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130310 to 130310. [2021-12-06 22:36:11,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130310 states, 116234 states have (on average 1.162508388251286) internal successors, (135123), 118100 states have internal predecessors, (135123), 6499 states have call successors, (6499), 5232 states have call predecessors, (6499), 7576 states have return successors, (17079), 6981 states have call predecessors, (17079), 6499 states have call successors, (17079) [2021-12-06 22:36:12,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130310 states to 130310 states and 158701 transitions. [2021-12-06 22:36:12,276 INFO L78 Accepts]: Start accepts. Automaton has 130310 states and 158701 transitions. Word has length 190 [2021-12-06 22:36:12,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:12,276 INFO L470 AbstractCegarLoop]: Abstraction has 130310 states and 158701 transitions. [2021-12-06 22:36:12,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:36:12,277 INFO L276 IsEmpty]: Start isEmpty. Operand 130310 states and 158701 transitions. [2021-12-06 22:36:12,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 22:36:12,308 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:12,308 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:12,330 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-06 22:36:12,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2021-12-06 22:36:12,510 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:12,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:12,511 INFO L85 PathProgramCache]: Analyzing trace with hash -2094114238, now seen corresponding path program 1 times [2021-12-06 22:36:12,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:36:12,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706311160] [2021-12-06 22:36:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:12,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:36:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:12,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:36:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:12,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:36:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:12,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:36:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:12,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:36:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:12,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:36:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:12,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:36:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:12,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:36:12,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:12,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:36:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:12,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:36:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:12,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:36:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:12,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 22:36:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:12,606 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 22:36:12,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:36:12,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706311160] [2021-12-06 22:36:12,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706311160] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:36:12,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134296999] [2021-12-06 22:36:12,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:12,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:36:12,607 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:36:12,607 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:36:12,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-06 22:36:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:12,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:36:12,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-12-06 22:36:12,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:36:12,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134296999] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:36:12,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:36:12,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2021-12-06 22:36:12,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129536618] [2021-12-06 22:36:12,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:36:12,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:36:12,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:36:12,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:36:12,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:36:12,810 INFO L87 Difference]: Start difference. First operand 130310 states and 158701 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:36:19,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:19,344 INFO L93 Difference]: Finished difference Result 186058 states and 228578 transitions. [2021-12-06 22:36:19,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 22:36:19,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 190 [2021-12-06 22:36:19,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:19,547 INFO L225 Difference]: With dead ends: 186058 [2021-12-06 22:36:19,547 INFO L226 Difference]: Without dead ends: 92121 [2021-12-06 22:36:19,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:36:19,659 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 213 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:19,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 386 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:36:19,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92121 states. [2021-12-06 22:36:25,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92121 to 73953. [2021-12-06 22:36:25,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73953 states, 66041 states have (on average 1.1492103390318136) internal successors, (75895), 67030 states have internal predecessors, (75895), 3715 states have call successors, (3715), 2952 states have call predecessors, (3715), 4196 states have return successors, (9477), 3972 states have call predecessors, (9477), 3715 states have call successors, (9477) [2021-12-06 22:36:25,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73953 states to 73953 states and 89087 transitions. [2021-12-06 22:36:25,257 INFO L78 Accepts]: Start accepts. Automaton has 73953 states and 89087 transitions. Word has length 190 [2021-12-06 22:36:25,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:25,257 INFO L470 AbstractCegarLoop]: Abstraction has 73953 states and 89087 transitions. [2021-12-06 22:36:25,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:36:25,257 INFO L276 IsEmpty]: Start isEmpty. Operand 73953 states and 89087 transitions. [2021-12-06 22:36:25,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 22:36:25,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:25,273 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:25,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2021-12-06 22:36:25,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:36:25,474 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:25,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:25,475 INFO L85 PathProgramCache]: Analyzing trace with hash -2024466364, now seen corresponding path program 1 times [2021-12-06 22:36:25,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:36:25,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871471070] [2021-12-06 22:36:25,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:25,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:36:25,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:25,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:36:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:25,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:36:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:36:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:25,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:36:25,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:25,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:36:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:25,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:36:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:25,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:36:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:25,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:36:25,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:25,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:36:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:25,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:36:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:25,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 22:36:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 22:36:25,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:36:25,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871471070] [2021-12-06 22:36:25,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871471070] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:36:25,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836420445] [2021-12-06 22:36:25,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:25,565 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:36:25,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:36:25,566 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:36:25,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-06 22:36:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:25,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:36:25,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2021-12-06 22:36:25,788 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:36:25,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836420445] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:36:25,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:36:25,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-12-06 22:36:25,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565522165] [2021-12-06 22:36:25,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:36:25,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:36:25,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:36:25,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:36:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:36:25,789 INFO L87 Difference]: Start difference. First operand 73953 states and 89087 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:36:30,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:30,713 INFO L93 Difference]: Finished difference Result 124507 states and 151917 transitions. [2021-12-06 22:36:30,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:36:30,714 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 190 [2021-12-06 22:36:30,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:30,816 INFO L225 Difference]: With dead ends: 124507 [2021-12-06 22:36:30,816 INFO L226 Difference]: Without dead ends: 50566 [2021-12-06 22:36:30,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:36:30,900 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 126 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:30,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 839 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:36:30,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50566 states. [2021-12-06 22:36:34,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50566 to 47728. [2021-12-06 22:36:34,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47728 states, 42328 states have (on average 1.1308353808353808) internal successors, (47866), 42968 states have internal predecessors, (47866), 2548 states have call successors, (2548), 2040 states have call predecessors, (2548), 2851 states have return successors, (5590), 2720 states have call predecessors, (5590), 2548 states have call successors, (5590) [2021-12-06 22:36:34,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47728 states to 47728 states and 56004 transitions. [2021-12-06 22:36:34,630 INFO L78 Accepts]: Start accepts. Automaton has 47728 states and 56004 transitions. Word has length 190 [2021-12-06 22:36:34,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:34,630 INFO L470 AbstractCegarLoop]: Abstraction has 47728 states and 56004 transitions. [2021-12-06 22:36:34,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 5 states have internal predecessors, (100), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:36:34,630 INFO L276 IsEmpty]: Start isEmpty. Operand 47728 states and 56004 transitions. [2021-12-06 22:36:34,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 22:36:34,638 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:34,638 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:34,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-06 22:36:34,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:36:34,839 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:34,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:34,840 INFO L85 PathProgramCache]: Analyzing trace with hash -618001643, now seen corresponding path program 1 times [2021-12-06 22:36:34,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:36:34,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361947083] [2021-12-06 22:36:34,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:34,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:36:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:34,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:36:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:34,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:36:34,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:34,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:36:34,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:34,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:36:34,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:34,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:36:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:34,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:36:34,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:34,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:36:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:34,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:36:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:36:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:34,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:36:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:34,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 22:36:34,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:34,937 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-06 22:36:34,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:36:34,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361947083] [2021-12-06 22:36:34,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361947083] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:36:34,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968421664] [2021-12-06 22:36:34,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:34,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:36:34,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:36:34,938 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:36:34,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-06 22:36:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:35,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:36:35,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-06 22:36:35,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:36:35,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968421664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:36:35,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:36:35,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-12-06 22:36:35,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746968895] [2021-12-06 22:36:35,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:36:35,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:36:35,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:36:35,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:36:35,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:36:35,117 INFO L87 Difference]: Start difference. First operand 47728 states and 56004 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:36:38,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:38,141 INFO L93 Difference]: Finished difference Result 88368 states and 105027 transitions. [2021-12-06 22:36:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:36:38,142 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 190 [2021-12-06 22:36:38,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:38,230 INFO L225 Difference]: With dead ends: 88368 [2021-12-06 22:36:38,230 INFO L226 Difference]: Without dead ends: 40652 [2021-12-06 22:36:38,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:36:38,308 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 88 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:38,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 825 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:36:38,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40652 states. [2021-12-06 22:36:41,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40652 to 39081. [2021-12-06 22:36:41,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39081 states, 34493 states have (on average 1.1112109703418085) internal successors, (38329), 34994 states have internal predecessors, (38329), 2188 states have call successors, (2188), 1743 states have call predecessors, (2188), 2399 states have return successors, (4173), 2344 states have call predecessors, (4173), 2188 states have call successors, (4173) [2021-12-06 22:36:41,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39081 states to 39081 states and 44690 transitions. [2021-12-06 22:36:41,422 INFO L78 Accepts]: Start accepts. Automaton has 39081 states and 44690 transitions. Word has length 190 [2021-12-06 22:36:41,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:41,423 INFO L470 AbstractCegarLoop]: Abstraction has 39081 states and 44690 transitions. [2021-12-06 22:36:41,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:36:41,423 INFO L276 IsEmpty]: Start isEmpty. Operand 39081 states and 44690 transitions. [2021-12-06 22:36:41,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 22:36:41,429 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:41,430 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:41,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-06 22:36:41,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:36:41,631 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:41,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:41,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1487701989, now seen corresponding path program 1 times [2021-12-06 22:36:41,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:36:41,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112164856] [2021-12-06 22:36:41,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:41,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:36:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:41,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:36:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:41,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:36:41,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:41,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:36:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:41,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:36:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:41,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:36:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:41,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:36:41,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:41,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:36:41,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:41,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:36:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:41,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:36:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:41,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:36:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:41,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 22:36:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-06 22:36:41,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:36:41,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112164856] [2021-12-06 22:36:41,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112164856] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:36:41,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007675289] [2021-12-06 22:36:41,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:41,726 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:36:41,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:36:41,727 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:36:41,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-06 22:36:41,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:41,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:36:41,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:41,910 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2021-12-06 22:36:41,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:36:41,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007675289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:36:41,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:36:41,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-12-06 22:36:41,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771863171] [2021-12-06 22:36:41,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:36:41,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:36:41,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:36:41,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:36:41,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:36:41,911 INFO L87 Difference]: Start difference. First operand 39081 states and 44690 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:36:44,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:44,479 INFO L93 Difference]: Finished difference Result 73137 states and 84640 transitions. [2021-12-06 22:36:44,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:36:44,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 190 [2021-12-06 22:36:44,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:44,548 INFO L225 Difference]: With dead ends: 73137 [2021-12-06 22:36:44,548 INFO L226 Difference]: Without dead ends: 34068 [2021-12-06 22:36:44,594 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:36:44,594 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 49 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:44,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 810 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:36:44,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34068 states. [2021-12-06 22:36:47,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34068 to 33776. [2021-12-06 22:36:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33776 states, 29745 states have (on average 1.093629181375021) internal successors, (32530), 30155 states have internal predecessors, (32530), 1959 states have call successors, (1959), 1556 states have call predecessors, (1959), 2071 states have return successors, (3333), 2065 states have call predecessors, (3333), 1959 states have call successors, (3333) [2021-12-06 22:36:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33776 states to 33776 states and 37822 transitions. [2021-12-06 22:36:47,125 INFO L78 Accepts]: Start accepts. Automaton has 33776 states and 37822 transitions. Word has length 190 [2021-12-06 22:36:47,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:47,126 INFO L470 AbstractCegarLoop]: Abstraction has 33776 states and 37822 transitions. [2021-12-06 22:36:47,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:36:47,126 INFO L276 IsEmpty]: Start isEmpty. Operand 33776 states and 37822 transitions. [2021-12-06 22:36:47,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 22:36:47,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:47,130 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:47,150 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2021-12-06 22:36:47,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:36:47,332 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:47,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:47,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1983685025, now seen corresponding path program 1 times [2021-12-06 22:36:47,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:36:47,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239302901] [2021-12-06 22:36:47,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:47,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:36:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:47,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:36:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:47,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:36:47,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:47,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:36:47,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:47,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:36:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:36:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:47,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 22:36:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:47,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:36:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:36:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:47,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:36:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:47,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:36:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:47,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 22:36:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:47,431 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-06 22:36:47,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:36:47,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239302901] [2021-12-06 22:36:47,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239302901] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:36:47,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078739660] [2021-12-06 22:36:47,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:47,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:36:47,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:36:47,433 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:36:47,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-06 22:36:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:47,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 620 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 22:36:47,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:36:47,620 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-06 22:36:47,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:36:47,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078739660] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:36:47,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:36:47,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7 [2021-12-06 22:36:47,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480899278] [2021-12-06 22:36:47,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:36:47,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:36:47,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:36:47,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:36:47,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:36:47,621 INFO L87 Difference]: Start difference. First operand 33776 states and 37822 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:36:49,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:49,484 INFO L93 Difference]: Finished difference Result 58781 states and 66544 transitions. [2021-12-06 22:36:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:36:49,484 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 190 [2021-12-06 22:36:49,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:49,607 INFO L225 Difference]: With dead ends: 58781 [2021-12-06 22:36:49,607 INFO L226 Difference]: Without dead ends: 25017 [2021-12-06 22:36:49,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:36:49,634 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 10 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:49,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 795 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:36:49,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25017 states. [2021-12-06 22:36:51,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25017 to 24953. [2021-12-06 22:36:51,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24953 states, 22118 states have (on average 1.0749615697621846) internal successors, (23776), 22283 states have internal predecessors, (23776), 1456 states have call successors, (1456), 1152 states have call predecessors, (1456), 1378 states have return successors, (2056), 1518 states have call predecessors, (2056), 1456 states have call successors, (2056) [2021-12-06 22:36:51,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24953 states to 24953 states and 27288 transitions. [2021-12-06 22:36:51,501 INFO L78 Accepts]: Start accepts. Automaton has 24953 states and 27288 transitions. Word has length 190 [2021-12-06 22:36:51,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:36:51,501 INFO L470 AbstractCegarLoop]: Abstraction has 24953 states and 27288 transitions. [2021-12-06 22:36:51,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:36:51,501 INFO L276 IsEmpty]: Start isEmpty. Operand 24953 states and 27288 transitions. [2021-12-06 22:36:51,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2021-12-06 22:36:51,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:36:51,511 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:36:51,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-12-06 22:36:51,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-12-06 22:36:51,713 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:36:51,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:36:51,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1631644191, now seen corresponding path program 1 times [2021-12-06 22:36:51,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:36:51,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418321313] [2021-12-06 22:36:51,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:36:51,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:36:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:36:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:36:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:36:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:36:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:36:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:36:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:36:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:36:51,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 22:36:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:36:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 22:36:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:36:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-06 22:36:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:36:51,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-06 22:36:51,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:36:51,857 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2021-12-06 22:36:51,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:36:51,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418321313] [2021-12-06 22:36:51,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418321313] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:36:51,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:36:51,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:36:51,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967837235] [2021-12-06 22:36:51,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:36:51,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:36:51,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:36:51,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:36:51,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:36:51,859 INFO L87 Difference]: Start difference. First operand 24953 states and 27288 transitions. Second operand has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 6 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) [2021-12-06 22:36:58,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:36:58,728 INFO L93 Difference]: Finished difference Result 95115 states and 104567 transitions. [2021-12-06 22:36:58,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 22:36:58,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 6 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) Word has length 281 [2021-12-06 22:36:58,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:36:58,874 INFO L225 Difference]: With dead ends: 95115 [2021-12-06 22:36:58,874 INFO L226 Difference]: Without dead ends: 83565 [2021-12-06 22:36:58,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-12-06 22:36:58,904 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 1477 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 2020 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 2182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:36:58,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1525 Valid, 2095 Invalid, 2182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2020 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 22:36:58,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83565 states. [2021-12-06 22:37:03,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83565 to 57130. [2021-12-06 22:37:03,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57130 states, 50491 states have (on average 1.0773207106216949) internal successors, (54395), 51168 states have internal predecessors, (54395), 3270 states have call successors, (3270), 2556 states have call predecessors, (3270), 3368 states have return successors, (5030), 3406 states have call predecessors, (5030), 3270 states have call successors, (5030) [2021-12-06 22:37:03,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57130 states to 57130 states and 62695 transitions. [2021-12-06 22:37:03,546 INFO L78 Accepts]: Start accepts. Automaton has 57130 states and 62695 transitions. Word has length 281 [2021-12-06 22:37:03,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:37:03,546 INFO L470 AbstractCegarLoop]: Abstraction has 57130 states and 62695 transitions. [2021-12-06 22:37:03,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.625) internal successors, (141), 6 states have internal predecessors, (141), 6 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (11), 5 states have call predecessors, (11), 6 states have call successors, (11) [2021-12-06 22:37:03,547 INFO L276 IsEmpty]: Start isEmpty. Operand 57130 states and 62695 transitions. [2021-12-06 22:37:03,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2021-12-06 22:37:03,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:37:03,574 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:37:03,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-06 22:37:03,574 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:37:03,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:37:03,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1481664855, now seen corresponding path program 1 times [2021-12-06 22:37:03,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:37:03,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434463494] [2021-12-06 22:37:03,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:37:03,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:37:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:37:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:37:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:37:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:37:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:37:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 22:37:03,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:37:03,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:37:03,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 22:37:03,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:37:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 22:37:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:37:03,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-06 22:37:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:37:03,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-06 22:37:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-12-06 22:37:03,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-12-06 22:37:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-06 22:37:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-06 22:37:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-12-06 22:37:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-06 22:37:03,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2021-12-06 22:37:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2021-12-06 22:37:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:37:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2021-12-06 22:37:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,691 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 65 proven. 12 refuted. 0 times theorem prover too weak. 740 trivial. 0 not checked. [2021-12-06 22:37:03,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:37:03,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434463494] [2021-12-06 22:37:03,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434463494] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:37:03,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754992437] [2021-12-06 22:37:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:37:03,692 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:37:03,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:37:03,693 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:37:03,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-06 22:37:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:03,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 1262 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:37:03,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:37:04,054 INFO L134 CoverageAnalysis]: Checked inductivity of 817 backedges. 433 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2021-12-06 22:37:04,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:37:04,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754992437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:37:04,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:37:04,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2021-12-06 22:37:04,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881785817] [2021-12-06 22:37:04,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:37:04,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:37:04,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:37:04,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:37:04,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:37:04,055 INFO L87 Difference]: Start difference. First operand 57130 states and 62695 transitions. Second operand has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 5 states have internal predecessors, (211), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 22:37:04,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:37:04,576 INFO L93 Difference]: Finished difference Result 60996 states and 66890 transitions. [2021-12-06 22:37:04,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:37:04,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 5 states have internal predecessors, (211), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 424 [2021-12-06 22:37:04,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:37:04,585 INFO L225 Difference]: With dead ends: 60996 [2021-12-06 22:37:04,585 INFO L226 Difference]: Without dead ends: 3879 [2021-12-06 22:37:04,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 471 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:37:04,635 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 57 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:37:04,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 946 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:37:04,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3879 states. [2021-12-06 22:37:04,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3879 to 3769. [2021-12-06 22:37:04,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3769 states, 3363 states have (on average 1.0683913172762414) internal successors, (3593), 3383 states have internal predecessors, (3593), 187 states have call successors, (187), 158 states have call predecessors, (187), 218 states have return successors, (262), 227 states have call predecessors, (262), 187 states have call successors, (262) [2021-12-06 22:37:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3769 states to 3769 states and 4042 transitions. [2021-12-06 22:37:04,939 INFO L78 Accepts]: Start accepts. Automaton has 3769 states and 4042 transitions. Word has length 424 [2021-12-06 22:37:04,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:37:04,939 INFO L470 AbstractCegarLoop]: Abstraction has 3769 states and 4042 transitions. [2021-12-06 22:37:04,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.166666666666664) internal successors, (211), 5 states have internal predecessors, (211), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-06 22:37:04,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3769 states and 4042 transitions. [2021-12-06 22:37:04,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2021-12-06 22:37:04,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:37:04,943 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:37:04,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2021-12-06 22:37:05,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2ab4da8f-a622-4794-86f2-b4b52c4d4207/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-06 22:37:05,145 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:37:05,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:37:05,146 INFO L85 PathProgramCache]: Analyzing trace with hash 385585631, now seen corresponding path program 1 times [2021-12-06 22:37:05,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:37:05,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583421927] [2021-12-06 22:37:05,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:37:05,147 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:37:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 22:37:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 22:37:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 22:37:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:37:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:37:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:37:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 22:37:05,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:37:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:37:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:37:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 22:37:05,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:37:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-06 22:37:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-06 22:37:05,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-12-06 22:37:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-06 22:37:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-12-06 22:37:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-06 22:37:05,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-12-06 22:37:05,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2021-12-06 22:37:05,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-12-06 22:37:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:37:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 379 [2021-12-06 22:37:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:37:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2021-12-06 22:37:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:37:05,284 INFO L134 CoverageAnalysis]: Checked inductivity of 821 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2021-12-06 22:37:05,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:37:05,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583421927] [2021-12-06 22:37:05,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583421927] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:37:05,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:37:05,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:37:05,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331759667] [2021-12-06 22:37:05,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:37:05,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:37:05,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:37:05,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:37:05,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:37:05,286 INFO L87 Difference]: Start difference. First operand 3769 states and 4042 transitions. Second operand has 8 states, 8 states have (on average 22.625) internal successors, (181), 6 states have internal predecessors, (181), 5 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-06 22:37:05,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:37:05,789 INFO L93 Difference]: Finished difference Result 4712 states and 5054 transitions. [2021-12-06 22:37:05,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 22:37:05,789 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 6 states have internal predecessors, (181), 5 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 431 [2021-12-06 22:37:05,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:37:05,790 INFO L225 Difference]: With dead ends: 4712 [2021-12-06 22:37:05,790 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 22:37:05,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:37:05,794 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 726 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:37:05,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [730 Valid, 528 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:37:05,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 22:37:05,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 22:37:05,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:37:05,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 22:37:05,795 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 431 [2021-12-06 22:37:05,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:37:05,795 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 22:37:05,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.625) internal successors, (181), 6 states have internal predecessors, (181), 5 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-06 22:37:05,795 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 22:37:05,795 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 22:37:05,797 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 22:37:05,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-06 22:37:05,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 22:37:24,263 WARN L227 SmtUtils]: Spent 16.59s on a formula simplification. DAG size of input: 193 DAG size of output: 190 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-06 22:37:52,045 WARN L227 SmtUtils]: Spent 22.04s on a formula simplification. DAG size of input: 196 DAG size of output: 193 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-06 22:37:58,217 WARN L227 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 126 DAG size of output: 126 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-06 22:38:04,142 WARN L227 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 139 DAG size of output: 136 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-06 22:38:10,460 WARN L227 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 230 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2021-12-06 22:38:21,752 WARN L227 SmtUtils]: Spent 11.29s on a formula simplification. DAG size of input: 148 DAG size of output: 145 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)