./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 12:06:08,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:06:08,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:06:08,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:06:08,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:06:08,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:06:08,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:06:08,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:06:08,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:06:08,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:06:08,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:06:08,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:06:08,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:06:08,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:06:08,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:06:08,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:06:08,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:06:08,393 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:06:08,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:06:08,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:06:08,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:06:08,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:06:08,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:06:08,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:06:08,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:06:08,449 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:06:08,449 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:06:08,450 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:06:08,453 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:06:08,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:06:08,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:06:08,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:06:08,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:06:08,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:06:08,463 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:06:08,464 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:06:08,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:06:08,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:06:08,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:06:08,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:06:08,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:06:08,471 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:06:08,515 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:06:08,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:06:08,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:06:08,517 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:06:08,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:06:08,518 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:06:08,519 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:06:08,519 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:06:08,519 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:06:08,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:06:08,521 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:06:08,521 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:06:08,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:06:08,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:06:08,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:06:08,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:06:08,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:06:08,523 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:06:08,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:06:08,524 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:06:08,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:06:08,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:06:08,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:06:08,525 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:06:08,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:06:08,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:06:08,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:06:08,526 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:06:08,526 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:06:08,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:06:08,526 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:06:08,527 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:06:08,527 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:06:08,528 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_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4eb5ae4a2b95fd78cf87e688565203c0839d6de752e442a1cce7638954224909 [2022-11-20 12:06:08,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:06:08,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:06:08,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:06:08,957 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:06:08,958 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:06:08,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2022-11-20 12:06:12,592 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:06:13,131 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:06:13,133 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c [2022-11-20 12:06:13,173 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/data/12f4e4ae9/d564d0b63e4348f9921f23a1e626d6b3/FLAG049a121f0 [2022-11-20 12:06:13,194 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/data/12f4e4ae9/d564d0b63e4348f9921f23a1e626d6b3 [2022-11-20 12:06:13,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:06:13,200 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:06:13,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:06:13,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:06:13,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:06:13,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:06:13" (1/1) ... [2022-11-20 12:06:13,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d25ca1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:13, skipping insertion in model container [2022-11-20 12:06:13,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:06:13" (1/1) ... [2022-11-20 12:06:13,223 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:06:13,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:06:14,011 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2022-11-20 12:06:14,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:06:14,099 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:06:14,261 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/sv-benchmarks/c/product-lines/elevator_spec3_product19.cil.c[55726,55739] [2022-11-20 12:06:14,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:06:14,332 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:06:14,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:14 WrapperNode [2022-11-20 12:06:14,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:06:14,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:06:14,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:06:14,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:06:14,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:14" (1/1) ... [2022-11-20 12:06:14,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:14" (1/1) ... [2022-11-20 12:06:14,471 INFO L138 Inliner]: procedures = 92, calls = 346, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1091 [2022-11-20 12:06:14,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:06:14,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:06:14,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:06:14,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:06:14,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:14" (1/1) ... [2022-11-20 12:06:14,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:14" (1/1) ... [2022-11-20 12:06:14,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:14" (1/1) ... [2022-11-20 12:06:14,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:14" (1/1) ... [2022-11-20 12:06:14,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:14" (1/1) ... [2022-11-20 12:06:14,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:14" (1/1) ... [2022-11-20 12:06:14,572 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:14" (1/1) ... [2022-11-20 12:06:14,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:14" (1/1) ... [2022-11-20 12:06:14,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:06:14,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:06:14,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:06:14,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:06:14,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:14" (1/1) ... [2022-11-20 12:06:14,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:06:14,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:06:14,653 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:06:14,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:06:14,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:06:14,707 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-20 12:06:14,707 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-20 12:06:14,708 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-20 12:06:14,708 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-20 12:06:14,708 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-11-20 12:06:14,708 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-11-20 12:06:14,708 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-20 12:06:14,709 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-20 12:06:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-20 12:06:14,710 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-20 12:06:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-20 12:06:14,710 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-20 12:06:14,710 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-20 12:06:14,711 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-20 12:06:14,711 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-20 12:06:14,711 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-20 12:06:14,711 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 12:06:14,711 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 12:06:14,712 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 12:06:14,712 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 12:06:14,712 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-20 12:06:14,712 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-20 12:06:14,712 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-20 12:06:14,713 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-20 12:06:14,713 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-20 12:06:14,713 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-20 12:06:14,713 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-20 12:06:14,714 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-20 12:06:14,714 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-20 12:06:14,715 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-20 12:06:14,715 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-11-20 12:06:14,716 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-11-20 12:06:14,716 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-20 12:06:14,717 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-20 12:06:14,717 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-11-20 12:06:14,718 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-11-20 12:06:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-20 12:06:14,718 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-20 12:06:14,718 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-20 12:06:14,718 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-20 12:06:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-20 12:06:14,719 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-20 12:06:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-20 12:06:14,719 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-20 12:06:14,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:06:14,720 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-20 12:06:14,720 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-20 12:06:14,720 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-20 12:06:14,721 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-20 12:06:14,721 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-20 12:06:14,721 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-20 12:06:14,722 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-20 12:06:14,722 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-20 12:06:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:06:14,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:06:14,723 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-20 12:06:14,725 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-20 12:06:14,966 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:06:14,970 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:06:16,587 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:06:16,619 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:06:16,622 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 12:06:16,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:06:16 BoogieIcfgContainer [2022-11-20 12:06:16,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:06:16,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:06:16,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:06:16,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:06:16,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:06:13" (1/3) ... [2022-11-20 12:06:16,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593857b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:06:16, skipping insertion in model container [2022-11-20 12:06:16,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:06:14" (2/3) ... [2022-11-20 12:06:16,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@593857b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:06:16, skipping insertion in model container [2022-11-20 12:06:16,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:06:16" (3/3) ... [2022-11-20 12:06:16,652 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product19.cil.c [2022-11-20 12:06:16,681 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:06:16,682 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:06:16,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:06:16,775 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2d4937e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:06:16,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:06:16,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 589 states, 452 states have (on average 1.668141592920354) internal successors, (754), 470 states have internal predecessors, (754), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) [2022-11-20 12:06:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 12:06:16,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:16,855 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:16,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:16,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:16,864 INFO L85 PathProgramCache]: Analyzing trace with hash -698037258, now seen corresponding path program 1 times [2022-11-20 12:06:16,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:16,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053210287] [2022-11-20 12:06:16,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:16,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:06:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:06:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:06:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 12:06:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:06:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-20 12:06:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:06:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 12:06:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:06:18,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-20 12:06:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:18,769 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:06:18,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:18,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053210287] [2022-11-20 12:06:18,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053210287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:18,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:18,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:06:18,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995307083] [2022-11-20 12:06:18,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:18,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:06:18,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:18,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:06:18,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:06:18,856 INFO L87 Difference]: Start difference. First operand has 589 states, 452 states have (on average 1.668141592920354) internal successors, (754), 470 states have internal predecessors, (754), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 105 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:06:31,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:31,523 INFO L93 Difference]: Finished difference Result 1529 states and 2628 transitions. [2022-11-20 12:06:31,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:06:31,529 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 113 [2022-11-20 12:06:31,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:31,582 INFO L225 Difference]: With dead ends: 1529 [2022-11-20 12:06:31,582 INFO L226 Difference]: Without dead ends: 940 [2022-11-20 12:06:31,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:06:31,607 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 1756 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 5900 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1869 SdHoareTripleChecker+Valid, 3282 SdHoareTripleChecker+Invalid, 6464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 5900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:31,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1869 Valid, 3282 Invalid, 6464 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [564 Valid, 5900 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2022-11-20 12:06:31,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2022-11-20 12:06:31,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 592. [2022-11-20 12:06:31,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 455 states have (on average 1.6593406593406594) internal successors, (755), 473 states have internal predecessors, (755), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2022-11-20 12:06:31,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 972 transitions. [2022-11-20 12:06:31,984 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 972 transitions. Word has length 113 [2022-11-20 12:06:31,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:31,986 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 972 transitions. [2022-11-20 12:06:31,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:06:31,987 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 972 transitions. [2022-11-20 12:06:31,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 12:06:31,998 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:31,999 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:31,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:06:32,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:32,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:32,001 INFO L85 PathProgramCache]: Analyzing trace with hash 223175720, now seen corresponding path program 1 times [2022-11-20 12:06:32,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:32,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118502310] [2022-11-20 12:06:32,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:32,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:06:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:06:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:32,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:06:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 12:06:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 12:06:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:06:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 12:06:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:32,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 12:06:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:33,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:33,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:33,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 12:06:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:33,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 12:06:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:06:33,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:33,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118502310] [2022-11-20 12:06:33,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118502310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:33,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:33,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:06:33,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234790815] [2022-11-20 12:06:33,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:33,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:06:33,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:33,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:06:33,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:06:33,039 INFO L87 Difference]: Start difference. First operand 592 states and 972 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:06:45,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:45,223 INFO L93 Difference]: Finished difference Result 1519 states and 2574 transitions. [2022-11-20 12:06:45,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:06:45,225 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2022-11-20 12:06:45,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:45,234 INFO L225 Difference]: With dead ends: 1519 [2022-11-20 12:06:45,235 INFO L226 Difference]: Without dead ends: 943 [2022-11-20 12:06:45,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:06:45,241 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 2248 mSDsluCounter, 2587 mSDsCounter, 0 mSdLazyCounter, 5905 mSolverCounterSat, 788 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2362 SdHoareTripleChecker+Valid, 3071 SdHoareTripleChecker+Invalid, 6693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 788 IncrementalHoareTripleChecker+Valid, 5905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:45,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2362 Valid, 3071 Invalid, 6693 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [788 Valid, 5905 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-20 12:06:45,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-11-20 12:06:45,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 592. [2022-11-20 12:06:45,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 455 states have (on average 1.6571428571428573) internal successors, (754), 473 states have internal predecessors, (754), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2022-11-20 12:06:45,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 971 transitions. [2022-11-20 12:06:45,461 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 971 transitions. Word has length 114 [2022-11-20 12:06:45,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:45,464 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 971 transitions. [2022-11-20 12:06:45,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:06:45,464 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 971 transitions. [2022-11-20 12:06:45,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 12:06:45,478 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:45,478 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:45,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:06:45,479 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:45,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:45,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1917374278, now seen corresponding path program 1 times [2022-11-20 12:06:45,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:45,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576540079] [2022-11-20 12:06:45,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:45,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:45,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:06:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:45,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:45,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:45,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:06:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 12:06:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 12:06:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 12:06:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 12:06:46,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 12:06:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-20 12:06:46,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 12:06:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-20 12:06:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:06:46,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:46,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576540079] [2022-11-20 12:06:46,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576540079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:46,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:46,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:06:46,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770308575] [2022-11-20 12:06:46,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:46,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:06:46,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:46,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:06:46,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:06:46,102 INFO L87 Difference]: Start difference. First operand 592 states and 971 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 12:06:55,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:55,079 INFO L93 Difference]: Finished difference Result 1510 states and 2554 transitions. [2022-11-20 12:06:55,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:06:55,080 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2022-11-20 12:06:55,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:55,087 INFO L225 Difference]: With dead ends: 1510 [2022-11-20 12:06:55,087 INFO L226 Difference]: Without dead ends: 903 [2022-11-20 12:06:55,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:06:55,099 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 2163 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 3098 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2275 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 3880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 3098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:55,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2275 Valid, 1660 Invalid, 3880 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [782 Valid, 3098 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-20 12:06:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-11-20 12:06:55,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 568. [2022-11-20 12:06:55,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 434 states have (on average 1.6474654377880185) internal successors, (715), 450 states have internal predecessors, (715), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 12:06:55,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 928 transitions. [2022-11-20 12:06:55,314 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 928 transitions. Word has length 114 [2022-11-20 12:06:55,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:55,315 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 928 transitions. [2022-11-20 12:06:55,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-20 12:06:55,315 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 928 transitions. [2022-11-20 12:06:55,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-20 12:06:55,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:55,320 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:55,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:06:55,322 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:55,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:55,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1633376898, now seen corresponding path program 1 times [2022-11-20 12:06:55,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:06:55,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737188715] [2022-11-20 12:06:55,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:06:55,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:06:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:55,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:06:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:55,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:55,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:06:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:55,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:56,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:06:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:56,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 12:06:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:56,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 12:06:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:56,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-20 12:06:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:56,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:56,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:56,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 12:06:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:56,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:06:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:56,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:56,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:06:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:56,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-20 12:06:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:56,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:06:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:06:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:06:56,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:06:56,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737188715] [2022-11-20 12:06:56,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737188715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:06:56,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:06:56,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:06:56,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461176628] [2022-11-20 12:06:56,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:06:56,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:06:56,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:06:56,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:06:56,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:06:56,174 INFO L87 Difference]: Start difference. First operand 568 states and 928 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:07:07,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:07:07,820 INFO L93 Difference]: Finished difference Result 1473 states and 2485 transitions. [2022-11-20 12:07:07,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:07:07,822 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2022-11-20 12:07:07,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:07:07,830 INFO L225 Difference]: With dead ends: 1473 [2022-11-20 12:07:07,830 INFO L226 Difference]: Without dead ends: 897 [2022-11-20 12:07:07,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:07:07,836 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1123 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 5880 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 3168 SdHoareTripleChecker+Invalid, 6214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 5880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:07:07,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1235 Valid, 3168 Invalid, 6214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [334 Valid, 5880 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-20 12:07:07,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-11-20 12:07:08,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 562. [2022-11-20 12:07:08,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 428 states have (on average 1.6401869158878504) internal successors, (702), 444 states have internal predecessors, (702), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 12:07:08,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 915 transitions. [2022-11-20 12:07:08,053 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 915 transitions. Word has length 115 [2022-11-20 12:07:08,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:07:08,054 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 915 transitions. [2022-11-20 12:07:08,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:07:08,054 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 915 transitions. [2022-11-20 12:07:08,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-20 12:07:08,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:07:08,059 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:08,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:07:08,060 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:07:08,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:08,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1431168400, now seen corresponding path program 1 times [2022-11-20 12:07:08,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:08,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287146291] [2022-11-20 12:07:08,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:08,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:07:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:07:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:08,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:07:08,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 12:07:08,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:07:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 12:07:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-20 12:07:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:07:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-20 12:07:08,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-20 12:07:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:08,818 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:07:08,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:08,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287146291] [2022-11-20 12:07:08,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287146291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:08,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:08,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:07:08,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216770984] [2022-11-20 12:07:08,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:08,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:07:08,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:08,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:07:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:07:08,823 INFO L87 Difference]: Start difference. First operand 562 states and 915 transitions. Second operand has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:07:20,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:07:20,280 INFO L93 Difference]: Finished difference Result 1443 states and 2434 transitions. [2022-11-20 12:07:20,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:07:20,281 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2022-11-20 12:07:20,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:07:20,289 INFO L225 Difference]: With dead ends: 1443 [2022-11-20 12:07:20,289 INFO L226 Difference]: Without dead ends: 897 [2022-11-20 12:07:20,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:07:20,294 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1068 mSDsluCounter, 2657 mSDsCounter, 0 mSdLazyCounter, 5748 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 3135 SdHoareTripleChecker+Invalid, 6079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 5748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:07:20,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 3135 Invalid, 6079 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [331 Valid, 5748 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-11-20 12:07:20,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-11-20 12:07:20,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 562. [2022-11-20 12:07:20,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 428 states have (on average 1.6378504672897196) internal successors, (701), 444 states have internal predecessors, (701), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 12:07:20,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 914 transitions. [2022-11-20 12:07:20,527 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 914 transitions. Word has length 116 [2022-11-20 12:07:20,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:07:20,527 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 914 transitions. [2022-11-20 12:07:20,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:07:20,528 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 914 transitions. [2022-11-20 12:07:20,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-20 12:07:20,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:07:20,532 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:20,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:07:20,532 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:07:20,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:20,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1324799585, now seen corresponding path program 1 times [2022-11-20 12:07:20,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:20,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340218829] [2022-11-20 12:07:20,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:20,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:20,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:07:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:21,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:21,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:07:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:21,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:21,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:07:21,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:21,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 12:07:21,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:21,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 12:07:21,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:21,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 12:07:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:21,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:21,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 12:07:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:21,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 12:07:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:21,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:21,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:21,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:21,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 12:07:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:21,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:07:21,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:07:21,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:21,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340218829] [2022-11-20 12:07:21,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340218829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:21,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:21,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:07:21,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034100644] [2022-11-20 12:07:21,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:21,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:07:21,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:21,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:07:21,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:07:21,257 INFO L87 Difference]: Start difference. First operand 562 states and 914 transitions. Second operand has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:07:32,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:07:32,223 INFO L93 Difference]: Finished difference Result 1461 states and 2454 transitions. [2022-11-20 12:07:32,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:07:32,224 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 117 [2022-11-20 12:07:32,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:07:32,230 INFO L225 Difference]: With dead ends: 1461 [2022-11-20 12:07:32,235 INFO L226 Difference]: Without dead ends: 891 [2022-11-20 12:07:32,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:07:32,242 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1631 mSDsluCounter, 2521 mSDsCounter, 0 mSdLazyCounter, 5674 mSolverCounterSat, 558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1744 SdHoareTripleChecker+Valid, 2983 SdHoareTripleChecker+Invalid, 6232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 5674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:07:32,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1744 Valid, 2983 Invalid, 6232 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [558 Valid, 5674 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-20 12:07:32,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-20 12:07:32,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 556. [2022-11-20 12:07:32,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 422 states have (on average 1.6303317535545023) internal successors, (688), 438 states have internal predecessors, (688), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 12:07:32,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 901 transitions. [2022-11-20 12:07:32,436 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 901 transitions. Word has length 117 [2022-11-20 12:07:32,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:07:32,437 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 901 transitions. [2022-11-20 12:07:32,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:07:32,437 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 901 transitions. [2022-11-20 12:07:32,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 12:07:32,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:07:32,441 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:32,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:07:32,442 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:07:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:32,443 INFO L85 PathProgramCache]: Analyzing trace with hash 933027153, now seen corresponding path program 1 times [2022-11-20 12:07:32,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:32,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856142156] [2022-11-20 12:07:32,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:32,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:07:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:32,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:32,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:07:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:33,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:33,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:33,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:07:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:33,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 12:07:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:33,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 12:07:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:33,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 12:07:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:33,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:33,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:33,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 12:07:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:33,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 12:07:33,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:33,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:33,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:33,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:33,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 12:07:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:33,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 12:07:33,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:33,109 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:07:33,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:33,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856142156] [2022-11-20 12:07:33,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856142156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:33,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:33,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:07:33,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654865551] [2022-11-20 12:07:33,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:33,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:07:33,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:33,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:07:33,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:07:33,113 INFO L87 Difference]: Start difference. First operand 556 states and 901 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:07:44,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:07:44,163 INFO L93 Difference]: Finished difference Result 1431 states and 2405 transitions. [2022-11-20 12:07:44,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:07:44,164 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2022-11-20 12:07:44,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:07:44,171 INFO L225 Difference]: With dead ends: 1431 [2022-11-20 12:07:44,171 INFO L226 Difference]: Without dead ends: 891 [2022-11-20 12:07:44,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:07:44,175 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1033 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 5655 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1145 SdHoareTripleChecker+Valid, 3173 SdHoareTripleChecker+Invalid, 5988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 5655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:07:44,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1145 Valid, 3173 Invalid, 5988 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [333 Valid, 5655 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-20 12:07:44,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2022-11-20 12:07:44,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 556. [2022-11-20 12:07:44,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 422 states have (on average 1.627962085308057) internal successors, (687), 438 states have internal predecessors, (687), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 12:07:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 900 transitions. [2022-11-20 12:07:44,441 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 900 transitions. Word has length 118 [2022-11-20 12:07:44,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:07:44,441 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 900 transitions. [2022-11-20 12:07:44,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:07:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 900 transitions. [2022-11-20 12:07:44,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-20 12:07:44,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:07:44,446 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:44,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:07:44,446 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:07:44,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:44,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1338552957, now seen corresponding path program 1 times [2022-11-20 12:07:44,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:44,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553071701] [2022-11-20 12:07:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:44,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:44,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:07:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:44,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:44,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:07:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:44,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:44,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:45,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:07:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 12:07:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:45,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 12:07:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:45,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 12:07:45,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:45,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:45,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 12:07:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:45,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 12:07:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:45,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:45,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:45,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 12:07:45,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:45,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 12:07:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:07:45,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:45,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553071701] [2022-11-20 12:07:45,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553071701] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:45,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:45,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:07:45,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813071953] [2022-11-20 12:07:45,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:45,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:07:45,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:45,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:07:45,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:07:45,146 INFO L87 Difference]: Start difference. First operand 556 states and 900 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:07:56,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:07:56,259 INFO L93 Difference]: Finished difference Result 1449 states and 2423 transitions. [2022-11-20 12:07:56,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:07:56,260 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2022-11-20 12:07:56,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:07:56,267 INFO L225 Difference]: With dead ends: 1449 [2022-11-20 12:07:56,267 INFO L226 Difference]: Without dead ends: 885 [2022-11-20 12:07:56,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:07:56,272 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1069 mSDsluCounter, 2712 mSDsCounter, 0 mSdLazyCounter, 5683 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 6015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 5683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:07:56,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 3201 Invalid, 6015 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [332 Valid, 5683 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2022-11-20 12:07:56,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-11-20 12:07:56,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 550. [2022-11-20 12:07:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 416 states have (on average 1.6201923076923077) internal successors, (674), 432 states have internal predecessors, (674), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 12:07:56,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 887 transitions. [2022-11-20 12:07:56,520 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 887 transitions. Word has length 119 [2022-11-20 12:07:56,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:07:56,520 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 887 transitions. [2022-11-20 12:07:56,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:07:56,521 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 887 transitions. [2022-11-20 12:07:56,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-20 12:07:56,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:07:56,525 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:07:56,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:07:56,525 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:07:56,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:07:56,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1479840670, now seen corresponding path program 1 times [2022-11-20 12:07:56,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:07:56,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869770069] [2022-11-20 12:07:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:07:56,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:07:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:56,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:07:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:56,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:56,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:07:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:07:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 12:07:57,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 12:07:57,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 12:07:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-20 12:07:57,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-20 12:07:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:07:57,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 12:07:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-20 12:07:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:07:57,178 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:07:57,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:07:57,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869770069] [2022-11-20 12:07:57,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869770069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:07:57,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:07:57,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:07:57,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306658605] [2022-11-20 12:07:57,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:07:57,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:07:57,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:07:57,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:07:57,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:07:57,182 INFO L87 Difference]: Start difference. First operand 550 states and 887 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:08:07,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:08:07,389 INFO L93 Difference]: Finished difference Result 1419 states and 2376 transitions. [2022-11-20 12:08:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:08:07,390 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2022-11-20 12:08:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:08:07,401 INFO L225 Difference]: With dead ends: 1419 [2022-11-20 12:08:07,401 INFO L226 Difference]: Without dead ends: 885 [2022-11-20 12:08:07,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:08:07,407 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1541 mSDsluCounter, 2629 mSDsCounter, 0 mSdLazyCounter, 5338 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 3110 SdHoareTripleChecker+Invalid, 5898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 5338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:08:07,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 3110 Invalid, 5898 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [560 Valid, 5338 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-20 12:08:07,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-11-20 12:08:07,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 550. [2022-11-20 12:08:07,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 416 states have (on average 1.6177884615384615) internal successors, (673), 432 states have internal predecessors, (673), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 12:08:07,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 886 transitions. [2022-11-20 12:08:07,665 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 886 transitions. Word has length 119 [2022-11-20 12:08:07,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:08:07,666 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 886 transitions. [2022-11-20 12:08:07,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:08:07,666 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 886 transitions. [2022-11-20 12:08:07,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-20 12:08:07,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:08:07,670 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:07,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:08:07,671 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:08:07,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:07,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1297194777, now seen corresponding path program 1 times [2022-11-20 12:08:07,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:07,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315778453] [2022-11-20 12:08:07,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:07,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:08:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:08:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:08:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 12:08:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 12:08:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 12:08:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-20 12:08:08,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 12:08:08,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:08,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-20 12:08:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 12:08:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:08:08,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:08,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315778453] [2022-11-20 12:08:08,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315778453] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:08,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:08:08,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:08:08,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240969857] [2022-11-20 12:08:08,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:08,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:08:08,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:08,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:08:08,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:08:08,330 INFO L87 Difference]: Start difference. First operand 550 states and 886 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:08:19,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:08:19,227 INFO L93 Difference]: Finished difference Result 1431 states and 2385 transitions. [2022-11-20 12:08:19,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:08:19,235 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2022-11-20 12:08:19,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:08:19,240 INFO L225 Difference]: With dead ends: 1431 [2022-11-20 12:08:19,240 INFO L226 Difference]: Without dead ends: 885 [2022-11-20 12:08:19,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:08:19,244 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1020 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 5506 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1133 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 5841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 5506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:08:19,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1133 Valid, 3205 Invalid, 5841 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [335 Valid, 5506 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-20 12:08:19,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-11-20 12:08:19,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 550. [2022-11-20 12:08:19,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 416 states have (on average 1.6153846153846154) internal successors, (672), 432 states have internal predecessors, (672), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 12:08:19,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 885 transitions. [2022-11-20 12:08:19,516 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 885 transitions. Word has length 120 [2022-11-20 12:08:19,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:08:19,516 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 885 transitions. [2022-11-20 12:08:19,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:08:19,517 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 885 transitions. [2022-11-20 12:08:19,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 12:08:19,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:08:19,521 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:19,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:08:19,521 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:08:19,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:19,522 INFO L85 PathProgramCache]: Analyzing trace with hash 244937802, now seen corresponding path program 1 times [2022-11-20 12:08:19,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:19,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484449844] [2022-11-20 12:08:19,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:19,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:19,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:08:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:08:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:20,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:08:20,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:08:20,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:08:20,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 12:08:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:20,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 12:08:20,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 12:08:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 12:08:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 12:08:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:20,226 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:08:20,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:20,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484449844] [2022-11-20 12:08:20,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484449844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:20,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:08:20,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:08:20,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042130580] [2022-11-20 12:08:20,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:20,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:08:20,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:20,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:08:20,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:08:20,230 INFO L87 Difference]: Start difference. First operand 550 states and 885 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:08:30,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:08:30,596 INFO L93 Difference]: Finished difference Result 1414 states and 2365 transitions. [2022-11-20 12:08:30,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:08:30,597 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2022-11-20 12:08:30,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:08:30,604 INFO L225 Difference]: With dead ends: 1414 [2022-11-20 12:08:30,604 INFO L226 Difference]: Without dead ends: 880 [2022-11-20 12:08:30,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:08:30,608 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 1504 mSDsluCounter, 2685 mSDsCounter, 0 mSdLazyCounter, 5330 mSolverCounterSat, 558 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 3177 SdHoareTripleChecker+Invalid, 5888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 558 IncrementalHoareTripleChecker+Valid, 5330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:08:30,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1617 Valid, 3177 Invalid, 5888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [558 Valid, 5330 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-20 12:08:30,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2022-11-20 12:08:30,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 550. [2022-11-20 12:08:30,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 416 states have (on average 1.6129807692307692) internal successors, (671), 432 states have internal predecessors, (671), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 103 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 12:08:30,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 884 transitions. [2022-11-20 12:08:30,865 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 884 transitions. Word has length 121 [2022-11-20 12:08:30,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:08:30,867 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 884 transitions. [2022-11-20 12:08:30,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:08:30,867 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 884 transitions. [2022-11-20 12:08:30,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-20 12:08:30,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:08:30,871 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:30,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:08:30,871 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:08:30,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:30,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1631545016, now seen corresponding path program 1 times [2022-11-20 12:08:30,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:30,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448114748] [2022-11-20 12:08:30,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:30,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:30,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:08:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:31,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:08:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:08:31,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:08:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:08:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 12:08:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:31,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 12:08:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 12:08:31,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:31,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 12:08:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 12:08:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:31,555 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:08:31,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:31,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448114748] [2022-11-20 12:08:31,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448114748] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:31,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711864911] [2022-11-20 12:08:31,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:31,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:31,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:31,562 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:31,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:08:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:32,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1646 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:08:32,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:32,299 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 12:08:32,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:08:32,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711864911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:32,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:08:32,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-20 12:08:32,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344639084] [2022-11-20 12:08:32,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:32,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:08:32,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:32,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:08:32,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:08:32,302 INFO L87 Difference]: Start difference. First operand 550 states and 884 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:08:33,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:08:33,154 INFO L93 Difference]: Finished difference Result 1561 states and 2540 transitions. [2022-11-20 12:08:33,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:08:33,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2022-11-20 12:08:33,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:08:33,163 INFO L225 Difference]: With dead ends: 1561 [2022-11-20 12:08:33,163 INFO L226 Difference]: Without dead ends: 1029 [2022-11-20 12:08:33,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:08:33,168 INFO L413 NwaCegarLoop]: 1524 mSDtfsCounter, 811 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:08:33,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 2304 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:08:33,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-11-20 12:08:33,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 1014. [2022-11-20 12:08:33,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 774 states have (on average 1.6253229974160206) internal successors, (1258), 805 states have internal predecessors, (1258), 191 states have call successors, (191), 49 states have call predecessors, (191), 48 states have return successors, (193), 185 states have call predecessors, (193), 188 states have call successors, (193) [2022-11-20 12:08:33,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1642 transitions. [2022-11-20 12:08:33,708 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1642 transitions. Word has length 121 [2022-11-20 12:08:33,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:08:33,708 INFO L495 AbstractCegarLoop]: Abstraction has 1014 states and 1642 transitions. [2022-11-20 12:08:33,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:08:33,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1642 transitions. [2022-11-20 12:08:33,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 12:08:33,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:08:33,715 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:33,730 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:08:33,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 12:08:33,925 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:08:33,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:33,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1816173263, now seen corresponding path program 1 times [2022-11-20 12:08:33,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:33,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353703909] [2022-11-20 12:08:33,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:33,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:08:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:08:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:34,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:08:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:08:34,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:08:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 12:08:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:34,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 12:08:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 12:08:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-20 12:08:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-20 12:08:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:34,625 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:08:34,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:34,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353703909] [2022-11-20 12:08:34,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353703909] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:08:34,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398154217] [2022-11-20 12:08:34,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:34,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:08:34,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:08:34,632 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:08:34,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:08:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:35,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1647 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 12:08:35,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:08:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 12:08:35,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:08:35,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398154217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:35,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:08:35,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-20 12:08:35,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904834818] [2022-11-20 12:08:35,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:35,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:08:35,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:35,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:08:35,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:08:35,231 INFO L87 Difference]: Start difference. First operand 1014 states and 1642 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:08:36,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:08:36,157 INFO L93 Difference]: Finished difference Result 2489 states and 4058 transitions. [2022-11-20 12:08:36,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:08:36,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2022-11-20 12:08:36,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:08:36,168 INFO L225 Difference]: With dead ends: 2489 [2022-11-20 12:08:36,168 INFO L226 Difference]: Without dead ends: 1493 [2022-11-20 12:08:36,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:08:36,176 INFO L413 NwaCegarLoop]: 1579 mSDtfsCounter, 811 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 2359 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:08:36,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 2359 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:08:36,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2022-11-20 12:08:36,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1445. [2022-11-20 12:08:36,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1105 states have (on average 1.6380090497737556) internal successors, (1810), 1151 states have internal predecessors, (1810), 271 states have call successors, (271), 68 states have call predecessors, (271), 68 states have return successors, (278), 264 states have call predecessors, (278), 268 states have call successors, (278) [2022-11-20 12:08:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2359 transitions. [2022-11-20 12:08:36,841 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2359 transitions. Word has length 122 [2022-11-20 12:08:36,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:08:36,841 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2359 transitions. [2022-11-20 12:08:36,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 12:08:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2359 transitions. [2022-11-20 12:08:36,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 12:08:36,850 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:08:36,850 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:08:36,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-20 12:08:37,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 12:08:37,058 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:08:37,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:08:37,059 INFO L85 PathProgramCache]: Analyzing trace with hash -722634999, now seen corresponding path program 1 times [2022-11-20 12:08:37,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:08:37,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686177130] [2022-11-20 12:08:37,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:08:37,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:08:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:08:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:08:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:08:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:08:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:08:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 12:08:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:08:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:08:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 12:08:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:08:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:08:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-20 12:08:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:08:37,713 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 12:08:37,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:08:37,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686177130] [2022-11-20 12:08:37,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686177130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:08:37,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:08:37,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:08:37,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697627346] [2022-11-20 12:08:37,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:08:37,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:08:37,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:08:37,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:08:37,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:08:37,716 INFO L87 Difference]: Start difference. First operand 1445 states and 2359 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 12:09:08,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:08,140 INFO L93 Difference]: Finished difference Result 7015 states and 12716 transitions. [2022-11-20 12:09:08,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:09:08,141 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2022-11-20 12:09:08,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:08,198 INFO L225 Difference]: With dead ends: 7015 [2022-11-20 12:09:08,199 INFO L226 Difference]: Without dead ends: 5588 [2022-11-20 12:09:08,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:09:08,213 INFO L413 NwaCegarLoop]: 782 mSDtfsCounter, 3907 mSDsluCounter, 2998 mSDsCounter, 0 mSdLazyCounter, 8577 mSolverCounterSat, 2445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4026 SdHoareTripleChecker+Valid, 3780 SdHoareTripleChecker+Invalid, 11022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2445 IncrementalHoareTripleChecker+Valid, 8577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:08,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4026 Valid, 3780 Invalid, 11022 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2445 Valid, 8577 Invalid, 0 Unknown, 0 Unchecked, 23.5s Time] [2022-11-20 12:09:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5588 states. [2022-11-20 12:09:10,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5588 to 3439. [2022-11-20 12:09:10,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3439 states, 2481 states have (on average 1.6082224909310763) internal successors, (3990), 2665 states have internal predecessors, (3990), 789 states have call successors, (789), 130 states have call predecessors, (789), 168 states have return successors, (1216), 787 states have call predecessors, (1216), 785 states have call successors, (1216) [2022-11-20 12:09:10,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3439 states to 3439 states and 5995 transitions. [2022-11-20 12:09:10,151 INFO L78 Accepts]: Start accepts. Automaton has 3439 states and 5995 transitions. Word has length 124 [2022-11-20 12:09:10,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:10,152 INFO L495 AbstractCegarLoop]: Abstraction has 3439 states and 5995 transitions. [2022-11-20 12:09:10,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 12:09:10,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3439 states and 5995 transitions. [2022-11-20 12:09:10,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-20 12:09:10,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:10,160 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:10,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 12:09:10,160 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:09:10,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:10,161 INFO L85 PathProgramCache]: Analyzing trace with hash -543075646, now seen corresponding path program 1 times [2022-11-20 12:09:10,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:10,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931843747] [2022-11-20 12:09:10,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:10,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:09:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:09:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:10,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:09:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:09:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:09:10,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 12:09:10,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:09:10,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:09:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 12:09:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:09:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-20 12:09:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 12:09:10,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:10,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931843747] [2022-11-20 12:09:10,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931843747] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:09:10,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462074625] [2022-11-20 12:09:10,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:10,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:10,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:10,771 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:10,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:09:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:11,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 1665 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:09:11,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:11,376 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 12:09:11,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:09:11,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462074625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:11,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:09:11,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-20 12:09:11,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301911759] [2022-11-20 12:09:11,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:11,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:09:11,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:11,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:09:11,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:09:11,379 INFO L87 Difference]: Start difference. First operand 3439 states and 5995 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 12:09:14,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:14,806 INFO L93 Difference]: Finished difference Result 10027 states and 17678 transitions. [2022-11-20 12:09:14,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:09:14,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2022-11-20 12:09:14,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:14,858 INFO L225 Difference]: With dead ends: 10027 [2022-11-20 12:09:14,859 INFO L226 Difference]: Without dead ends: 6607 [2022-11-20 12:09:14,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:09:14,888 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 722 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:14,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [722 Valid, 1793 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:09:14,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6607 states. [2022-11-20 12:09:18,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6607 to 6570. [2022-11-20 12:09:18,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6570 states, 4712 states have (on average 1.5787351443123938) internal successors, (7439), 5078 states have internal predecessors, (7439), 1526 states have call successors, (1526), 254 states have call predecessors, (1526), 331 states have return successors, (2471), 1525 states have call predecessors, (2471), 1520 states have call successors, (2471) [2022-11-20 12:09:18,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6570 states to 6570 states and 11436 transitions. [2022-11-20 12:09:18,125 INFO L78 Accepts]: Start accepts. Automaton has 6570 states and 11436 transitions. Word has length 125 [2022-11-20 12:09:18,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:18,126 INFO L495 AbstractCegarLoop]: Abstraction has 6570 states and 11436 transitions. [2022-11-20 12:09:18,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 12:09:18,126 INFO L276 IsEmpty]: Start isEmpty. Operand 6570 states and 11436 transitions. [2022-11-20 12:09:18,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 12:09:18,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:18,134 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:18,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:18,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:18,344 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:09:18,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:18,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1125379908, now seen corresponding path program 1 times [2022-11-20 12:09:18,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:18,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030621057] [2022-11-20 12:09:18,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:18,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:18,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:18,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:09:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:18,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:18,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:09:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:18,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:18,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:09:18,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:18,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:09:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:18,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:09:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:18,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 12:09:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:09:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:18,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:09:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 12:09:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:18,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:18,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:18,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:09:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:19,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:09:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:19,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-20 12:09:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:19,012 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 12:09:19,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:19,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030621057] [2022-11-20 12:09:19,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030621057] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:09:19,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262036724] [2022-11-20 12:09:19,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:19,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:19,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:19,015 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:19,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:09:19,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:19,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 1658 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:09:19,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-20 12:09:19,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:09:19,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262036724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:19,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:09:19,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-20 12:09:19,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512522517] [2022-11-20 12:09:19,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:19,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:09:19,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:19,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:09:19,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:09:19,425 INFO L87 Difference]: Start difference. First operand 6570 states and 11436 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:09:26,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:26,323 INFO L93 Difference]: Finished difference Result 19596 states and 34417 transitions. [2022-11-20 12:09:26,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:09:26,323 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2022-11-20 12:09:26,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:26,404 INFO L225 Difference]: With dead ends: 19596 [2022-11-20 12:09:26,404 INFO L226 Difference]: Without dead ends: 13047 [2022-11-20 12:09:26,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:09:26,444 INFO L413 NwaCegarLoop]: 1031 mSDtfsCounter, 871 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1901 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 [2022-11-20 12:09:26,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 1901 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:09:26,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13047 states. [2022-11-20 12:09:33,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13047 to 12944. [2022-11-20 12:09:33,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12944 states, 9300 states have (on average 1.5812903225806452) internal successors, (14706), 10012 states have internal predecessors, (14706), 2992 states have call successors, (2992), 490 states have call predecessors, (2992), 651 states have return successors, (4924), 3011 states have call predecessors, (4924), 2982 states have call successors, (4924) [2022-11-20 12:09:33,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12944 states to 12944 states and 22622 transitions. [2022-11-20 12:09:33,318 INFO L78 Accepts]: Start accepts. Automaton has 12944 states and 22622 transitions. Word has length 127 [2022-11-20 12:09:33,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:33,319 INFO L495 AbstractCegarLoop]: Abstraction has 12944 states and 22622 transitions. [2022-11-20 12:09:33,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:09:33,320 INFO L276 IsEmpty]: Start isEmpty. Operand 12944 states and 22622 transitions. [2022-11-20 12:09:33,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 12:09:33,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:33,326 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:33,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:33,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:09:33,533 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:09:33,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:33,534 INFO L85 PathProgramCache]: Analyzing trace with hash 114262658, now seen corresponding path program 1 times [2022-11-20 12:09:33,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:33,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494774587] [2022-11-20 12:09:33,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:33,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:33,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:09:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:33,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:33,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:33,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:09:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:33,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:33,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:09:33,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:34,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:09:34,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:09:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:34,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 12:09:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:34,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:09:34,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:34,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:34,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:09:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:34,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 12:09:34,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:34,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:34,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:09:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:34,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 12:09:34,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:34,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-20 12:09:34,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:34,051 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 12:09:34,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:34,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494774587] [2022-11-20 12:09:34,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494774587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:09:34,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3605548] [2022-11-20 12:09:34,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:34,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:09:34,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:09:34,055 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:09:34,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:09:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:34,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 12:09:34,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:34,637 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 12:09:34,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:09:34,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3605548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:34,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:09:34,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-11-20 12:09:34,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919913424] [2022-11-20 12:09:34,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:34,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:09:34,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:34,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:09:34,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:09:34,640 INFO L87 Difference]: Start difference. First operand 12944 states and 22622 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-20 12:09:42,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:09:42,803 INFO L93 Difference]: Finished difference Result 26087 states and 46179 transitions. [2022-11-20 12:09:42,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:09:42,804 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2022-11-20 12:09:42,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:09:42,900 INFO L225 Difference]: With dead ends: 26087 [2022-11-20 12:09:42,901 INFO L226 Difference]: Without dead ends: 13161 [2022-11-20 12:09:42,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:09:42,998 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 909 mSDsluCounter, 3378 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 4354 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:09:42,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [968 Valid, 4354 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 12:09:43,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13161 states. [2022-11-20 12:09:49,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13161 to 12371. [2022-11-20 12:09:49,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12371 states, 8759 states have (on average 1.56364881835826) internal successors, (13696), 9470 states have internal predecessors, (13696), 3022 states have call successors, (3022), 446 states have call predecessors, (3022), 589 states have return successors, (4978), 3026 states have call predecessors, (4978), 3012 states have call successors, (4978) [2022-11-20 12:09:49,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12371 states to 12371 states and 21696 transitions. [2022-11-20 12:09:49,703 INFO L78 Accepts]: Start accepts. Automaton has 12371 states and 21696 transitions. Word has length 127 [2022-11-20 12:09:49,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:09:49,703 INFO L495 AbstractCegarLoop]: Abstraction has 12371 states and 21696 transitions. [2022-11-20 12:09:49,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-20 12:09:49,704 INFO L276 IsEmpty]: Start isEmpty. Operand 12371 states and 21696 transitions. [2022-11-20 12:09:49,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 12:09:49,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:09:49,708 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:09:49,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:09:49,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_950bbb0b-c217-40d3-8b99-d363985ea998/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:09:49,917 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:09:49,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:09:49,918 INFO L85 PathProgramCache]: Analyzing trace with hash 434819636, now seen corresponding path program 1 times [2022-11-20 12:09:49,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:09:49,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823665472] [2022-11-20 12:09:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:09:49,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:09:49,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:09:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:09:50,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:09:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:09:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:09:50,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 12:09:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 12:09:50,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:50,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 12:09:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:09:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:09:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:09:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 12:09:50,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-20 12:09:50,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:09:50,429 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 12:09:50,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:09:50,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823665472] [2022-11-20 12:09:50,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823665472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:09:50,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:09:50,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:09:50,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531500474] [2022-11-20 12:09:50,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:09:50,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:09:50,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:09:50,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:09:50,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:09:50,433 INFO L87 Difference]: Start difference. First operand 12371 states and 21696 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:10:07,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:10:07,385 INFO L93 Difference]: Finished difference Result 28064 states and 50947 transitions. [2022-11-20 12:10:07,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:10:07,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2022-11-20 12:10:07,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:10:07,502 INFO L225 Difference]: With dead ends: 28064 [2022-11-20 12:10:07,502 INFO L226 Difference]: Without dead ends: 15711 [2022-11-20 12:10:07,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:10:07,615 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1512 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 2886 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1625 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 2886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:10:07,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1625 Valid, 1688 Invalid, 3412 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [526 Valid, 2886 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-20 12:10:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15711 states. [2022-11-20 12:10:14,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15711 to 11849. [2022-11-20 12:10:14,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11849 states, 8543 states have (on average 1.5601076905068476) internal successors, (13328), 9162 states have internal predecessors, (13328), 2696 states have call successors, (2696), 454 states have call predecessors, (2696), 609 states have return successors, (4477), 2692 states have call predecessors, (4477), 2686 states have call successors, (4477) [2022-11-20 12:10:14,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11849 states to 11849 states and 20501 transitions. [2022-11-20 12:10:14,915 INFO L78 Accepts]: Start accepts. Automaton has 11849 states and 20501 transitions. Word has length 127 [2022-11-20 12:10:14,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:10:14,916 INFO L495 AbstractCegarLoop]: Abstraction has 11849 states and 20501 transitions. [2022-11-20 12:10:14,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 12:10:14,916 INFO L276 IsEmpty]: Start isEmpty. Operand 11849 states and 20501 transitions. [2022-11-20 12:10:14,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-20 12:10:14,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:10:14,921 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:10:14,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:10:14,921 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:10:14,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:10:14,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1164591274, now seen corresponding path program 1 times [2022-11-20 12:10:14,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:10:14,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171372924] [2022-11-20 12:10:14,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:10:14,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:10:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:10:15,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:10:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:10:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:10:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:10:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:10:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:10:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 12:10:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:10:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 12:10:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:10:15,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-20 12:10:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-20 12:10:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:10:15,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:10:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:10:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 12:10:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-20 12:10:15,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:10:15,628 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 12:10:15,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:10:15,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171372924] [2022-11-20 12:10:15,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171372924] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:10:15,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:10:15,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:10:15,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377289711] [2022-11-20 12:10:15,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:10:15,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:10:15,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:10:15,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:10:15,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:10:15,630 INFO L87 Difference]: Start difference. First operand 11849 states and 20501 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 12:11:10,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:10,104 INFO L93 Difference]: Finished difference Result 50976 states and 99445 transitions. [2022-11-20 12:11:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:11:10,105 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2022-11-20 12:11:10,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:10,501 INFO L225 Difference]: With dead ends: 50976 [2022-11-20 12:11:10,501 INFO L226 Difference]: Without dead ends: 39145 [2022-11-20 12:11:10,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-20 12:11:10,639 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 3942 mSDsluCounter, 3083 mSDsCounter, 0 mSdLazyCounter, 8861 mSolverCounterSat, 2475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4061 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 11336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2475 IncrementalHoareTripleChecker+Valid, 8861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:10,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4061 Valid, 3889 Invalid, 11336 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2475 Valid, 8861 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time] [2022-11-20 12:11:10,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39145 states. [2022-11-20 12:11:23,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39145 to 23561. [2022-11-20 12:11:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23561 states, 16992 states have (on average 1.557026836158192) internal successors, (26457), 18221 states have internal predecessors, (26457), 5347 states have call successors, (5347), 902 states have call predecessors, (5347), 1221 states have return successors, (9811), 5357 states have call predecessors, (9811), 5329 states have call successors, (9811) [2022-11-20 12:11:23,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23561 states to 23561 states and 41615 transitions. [2022-11-20 12:11:23,965 INFO L78 Accepts]: Start accepts. Automaton has 23561 states and 41615 transitions. Word has length 135 [2022-11-20 12:11:23,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:11:23,966 INFO L495 AbstractCegarLoop]: Abstraction has 23561 states and 41615 transitions. [2022-11-20 12:11:23,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-20 12:11:23,966 INFO L276 IsEmpty]: Start isEmpty. Operand 23561 states and 41615 transitions. [2022-11-20 12:11:23,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-20 12:11:23,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:11:23,972 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:11:23,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 12:11:23,973 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:11:23,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:11:23,974 INFO L85 PathProgramCache]: Analyzing trace with hash -727529201, now seen corresponding path program 1 times [2022-11-20 12:11:23,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:11:23,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591477446] [2022-11-20 12:11:23,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:11:23,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:11:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:11:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:11:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:11:24,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:11:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:11:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:11:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 12:11:24,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 12:11:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 12:11:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 12:11:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:11:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 12:11:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:11:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:11:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:11:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 12:11:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-20 12:11:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-20 12:11:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:11:24,447 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 12:11:24,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:11:24,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591477446] [2022-11-20 12:11:24,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591477446] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:11:24,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:11:24,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:11:24,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371101076] [2022-11-20 12:11:24,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:11:24,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:11:24,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:11:24,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:11:24,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:11:24,454 INFO L87 Difference]: Start difference. First operand 23561 states and 41615 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 12:11:51,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:11:51,023 INFO L93 Difference]: Finished difference Result 52795 states and 98938 transitions. [2022-11-20 12:11:51,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:11:51,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 136 [2022-11-20 12:11:51,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:11:51,264 INFO L225 Difference]: With dead ends: 52795 [2022-11-20 12:11:51,265 INFO L226 Difference]: Without dead ends: 29252 [2022-11-20 12:11:51,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:11:51,480 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 999 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 3048 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1113 SdHoareTripleChecker+Valid, 1754 SdHoareTripleChecker+Invalid, 3369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 3048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:11:51,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1113 Valid, 1754 Invalid, 3369 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [321 Valid, 3048 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-20 12:11:51,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29252 states.