./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro --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 10f09c8c5639b403d441157c6cb90f176690981c36f4af5417d0103735cbe364 --- 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-8393723 [2022-11-18 20:50:55,493 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:50:55,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:50:55,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:50:55,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:50:55,542 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:50:55,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:50:55,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:50:55,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:50:55,557 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:50:55,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:50:55,560 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:50:55,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:50:55,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:50:55,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:50:55,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:50:55,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:50:55,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:50:55,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:50:55,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:50:55,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:50:55,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:50:55,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:50:55,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:50:55,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:50:55,597 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:50:55,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:50:55,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:50:55,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:50:55,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:50:55,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:50:55,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:50:55,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:50:55,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:50:55,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:50:55,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:50:55,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:50:55,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:50:55,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:50:55,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:50:55,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:50:55,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:50:55,651 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:50:55,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:50:55,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:50:55,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:50:55,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:50:55,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:50:55,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:50:55,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:50:55,654 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:50:55,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:50:55,656 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:50:55,656 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:50:55,656 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:50:55,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:50:55,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:50:55,657 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:50:55,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:50:55,657 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:50:55,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:50:55,658 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:50:55,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:50:55,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:50:55,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:50:55,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:50:55,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:50:55,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:50:55,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:50:55,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:50:55,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:50:55,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:50:55,662 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:50:55,662 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:50:55,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:50:55,662 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_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 10f09c8c5639b403d441157c6cb90f176690981c36f4af5417d0103735cbe364 [2022-11-18 20:50:55,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:50:55,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:50:55,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:50:55,977 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:50:55,979 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:50:55,981 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c [2022-11-18 20:50:56,048 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/data/964d77962/6375dfaac57840418b5cff1f51741ee3/FLAG5638aa62c [2022-11-18 20:50:56,746 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:50:56,753 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c [2022-11-18 20:50:56,773 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/data/964d77962/6375dfaac57840418b5cff1f51741ee3/FLAG5638aa62c [2022-11-18 20:50:56,927 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/data/964d77962/6375dfaac57840418b5cff1f51741ee3 [2022-11-18 20:50:56,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:50:56,933 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:50:56,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:50:56,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:50:56,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:50:56,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:50:56" (1/1) ... [2022-11-18 20:50:56,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e128bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:56, skipping insertion in model container [2022-11-18 20:50:56,946 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:50:56" (1/1) ... [2022-11-18 20:50:56,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:50:57,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:50:57,283 WARN L234 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_dc6fe284-0b04-4671-9567-85d9b3ab069f/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c[3205,3218] [2022-11-18 20:50:57,674 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:50:57,686 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:50:57,715 WARN L234 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_dc6fe284-0b04-4671-9567-85d9b3ab069f/sv-benchmarks/c/product-lines/elevator_spec3_product22.cil.c[3205,3218] [2022-11-18 20:50:57,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:50:57,881 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:50:57,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:57 WrapperNode [2022-11-18 20:50:57,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:50:57,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:50:57,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:50:57,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:50:57,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:57" (1/1) ... [2022-11-18 20:50:57,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:57" (1/1) ... [2022-11-18 20:50:58,004 INFO L138 Inliner]: procedures = 92, calls = 351, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 905 [2022-11-18 20:50:58,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:50:58,006 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:50:58,006 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:50:58,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:50:58,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:57" (1/1) ... [2022-11-18 20:50:58,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:57" (1/1) ... [2022-11-18 20:50:58,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:57" (1/1) ... [2022-11-18 20:50:58,021 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:57" (1/1) ... [2022-11-18 20:50:58,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:57" (1/1) ... [2022-11-18 20:50:58,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:57" (1/1) ... [2022-11-18 20:50:58,052 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:57" (1/1) ... [2022-11-18 20:50:58,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:57" (1/1) ... [2022-11-18 20:50:58,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:50:58,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:50:58,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:50:58,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:50:58,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:57" (1/1) ... [2022-11-18 20:50:58,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:50:58,084 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:50:58,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:50:58,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:50:58,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:50:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-18 20:50:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-18 20:50:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-18 20:50:58,156 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-18 20:50:58,156 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-18 20:50:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-18 20:50:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-18 20:50:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-18 20:50:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-18 20:50:58,157 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-18 20:50:58,157 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-18 20:50:58,158 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-18 20:50:58,158 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-18 20:50:58,158 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-18 20:50:58,158 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-18 20:50:58,158 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-18 20:50:58,159 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-18 20:50:58,159 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-18 20:50:58,159 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-18 20:50:58,159 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-18 20:50:58,159 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-18 20:50:58,159 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-18 20:50:58,160 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-18 20:50:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-18 20:50:58,160 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-18 20:50:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-18 20:50:58,160 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-11-18 20:50:58,160 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-11-18 20:50:58,161 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-18 20:50:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-18 20:50:58,161 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-11-18 20:50:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-11-18 20:50:58,161 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-18 20:50:58,161 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-18 20:50:58,162 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-18 20:50:58,162 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-18 20:50:58,162 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-18 20:50:58,162 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-18 20:50:58,162 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-18 20:50:58,162 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-18 20:50:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:50:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-18 20:50:58,163 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-18 20:50:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-18 20:50:58,163 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-18 20:50:58,163 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-18 20:50:58,164 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-18 20:50:58,164 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-18 20:50:58,164 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-18 20:50:58,164 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-11-18 20:50:58,164 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-11-18 20:50:58,164 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-18 20:50:58,165 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-18 20:50:58,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:50:58,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:50:58,165 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-18 20:50:58,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-18 20:50:58,325 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:50:58,328 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:50:59,795 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:50:59,815 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:50:59,816 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:50:59,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:50:59 BoogieIcfgContainer [2022-11-18 20:50:59,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:50:59,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:50:59,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:50:59,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:50:59,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:50:56" (1/3) ... [2022-11-18 20:50:59,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406a92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:50:59, skipping insertion in model container [2022-11-18 20:50:59,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:50:57" (2/3) ... [2022-11-18 20:50:59,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@406a92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:50:59, skipping insertion in model container [2022-11-18 20:50:59,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:50:59" (3/3) ... [2022-11-18 20:50:59,838 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product22.cil.c [2022-11-18 20:50:59,854 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:50:59,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:50:59,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:50:59,931 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;@4cb24f04, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:50:59,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:50:59,938 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 459 states have (on average 1.673202614379085) internal successors, (768), 479 states have internal predecessors, (768), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2022-11-18 20:50:59,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 20:50:59,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:59,954 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:59,955 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:59,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:59,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1321862527, now seen corresponding path program 1 times [2022-11-18 20:50:59,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:59,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840452310] [2022-11-18 20:50:59,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:59,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:00,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:51:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:01,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:01,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:01,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:51:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:01,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:01,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:51:01,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:01,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:51:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:01,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:51:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:01,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:51:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:01,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:51:01,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:01,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840452310] [2022-11-18 20:51:01,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840452310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:01,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:01,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:51:01,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775076122] [2022-11-18 20:51:01,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:01,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:51:01,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:01,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:51:01,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:51:01,452 INFO L87 Difference]: Start difference. First operand has 596 states, 459 states have (on average 1.673202614379085) internal successors, (768), 479 states have internal predecessors, (768), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:51:10,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:10,587 INFO L93 Difference]: Finished difference Result 1464 states and 2513 transitions. [2022-11-18 20:51:10,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:51:10,593 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-11-18 20:51:10,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:10,622 INFO L225 Difference]: With dead ends: 1464 [2022-11-18 20:51:10,622 INFO L226 Difference]: Without dead ends: 872 [2022-11-18 20:51:10,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:51:10,636 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1568 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 5300 mSolverCounterSat, 440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 2497 SdHoareTripleChecker+Invalid, 5740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 440 IncrementalHoareTripleChecker+Valid, 5300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:10,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 2497 Invalid, 5740 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [440 Valid, 5300 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-18 20:51:10,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-11-18 20:51:10,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 599. [2022-11-18 20:51:10,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 462 states have (on average 1.6645021645021645) internal successors, (769), 482 states have internal predecessors, (769), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2022-11-18 20:51:10,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 986 transitions. [2022-11-18 20:51:10,917 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 986 transitions. Word has length 67 [2022-11-18 20:51:10,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:10,918 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 986 transitions. [2022-11-18 20:51:10,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:51:10,919 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 986 transitions. [2022-11-18 20:51:10,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:51:10,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:10,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:10,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:51:10,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:10,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:10,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1068252313, now seen corresponding path program 1 times [2022-11-18 20:51:10,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:10,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302326771] [2022-11-18 20:51:10,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:10,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:11,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:51:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:11,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:11,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:51:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:11,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:11,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:11,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:51:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:11,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:51:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:11,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:51:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:11,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 20:51:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:11,584 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:51:11,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:11,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302326771] [2022-11-18 20:51:11,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302326771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:11,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:11,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:51:11,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148342015] [2022-11-18 20:51:11,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:11,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:51:11,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:11,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:51:11,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:51:11,589 INFO L87 Difference]: Start difference. First operand 599 states and 986 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:51:20,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:20,527 INFO L93 Difference]: Finished difference Result 1458 states and 2477 transitions. [2022-11-18 20:51:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:51:20,528 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2022-11-18 20:51:20,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:20,536 INFO L225 Difference]: With dead ends: 1458 [2022-11-18 20:51:20,537 INFO L226 Difference]: Without dead ends: 875 [2022-11-18 20:51:20,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:51:20,542 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 893 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 5574 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 5790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 5574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:20,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 2438 Invalid, 5790 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [216 Valid, 5574 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-18 20:51:20,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-11-18 20:51:20,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 599. [2022-11-18 20:51:20,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 462 states have (on average 1.6623376623376624) internal successors, (768), 482 states have internal predecessors, (768), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2022-11-18 20:51:20,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 985 transitions. [2022-11-18 20:51:20,716 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 985 transitions. Word has length 68 [2022-11-18 20:51:20,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:20,718 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 985 transitions. [2022-11-18 20:51:20,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:51:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 985 transitions. [2022-11-18 20:51:20,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:51:20,720 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:20,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:20,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:51:20,722 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:20,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:20,723 INFO L85 PathProgramCache]: Analyzing trace with hash -550225129, now seen corresponding path program 1 times [2022-11-18 20:51:20,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:20,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779419197] [2022-11-18 20:51:20,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:20,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:21,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:51:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:21,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:21,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:21,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:51:21,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:21,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:21,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:51:21,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:21,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:51:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:21,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:51:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:21,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 20:51:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:51:21,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:21,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779419197] [2022-11-18 20:51:21,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779419197] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:21,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:21,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:51:21,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102806004] [2022-11-18 20:51:21,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:21,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:51:21,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:21,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:51:21,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:51:21,256 INFO L87 Difference]: Start difference. First operand 599 states and 985 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 20:51:27,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:27,736 INFO L93 Difference]: Finished difference Result 1449 states and 2457 transitions. [2022-11-18 20:51:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:51:27,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-18 20:51:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:27,743 INFO L225 Difference]: With dead ends: 1449 [2022-11-18 20:51:27,744 INFO L226 Difference]: Without dead ends: 835 [2022-11-18 20:51:27,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:51:27,749 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 1450 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 2778 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 3211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:27,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 1352 Invalid, 3211 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [433 Valid, 2778 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-18 20:51:27,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-11-18 20:51:27,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 575. [2022-11-18 20:51:27,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 441 states have (on average 1.653061224489796) internal successors, (729), 459 states have internal predecessors, (729), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-18 20:51:27,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 942 transitions. [2022-11-18 20:51:27,881 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 942 transitions. Word has length 68 [2022-11-18 20:51:27,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:27,882 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 942 transitions. [2022-11-18 20:51:27,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 20:51:27,882 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 942 transitions. [2022-11-18 20:51:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:51:27,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:27,884 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:27,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:51:27,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:27,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:27,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1908921867, now seen corresponding path program 1 times [2022-11-18 20:51:27,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:27,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197118977] [2022-11-18 20:51:27,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:27,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:51:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:51:28,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:51:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:51:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:51:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:51:28,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:51:28,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:28,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197118977] [2022-11-18 20:51:28,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197118977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:28,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:28,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:51:28,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568142818] [2022-11-18 20:51:28,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:28,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:51:28,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:28,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:51:28,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:51:28,459 INFO L87 Difference]: Start difference. First operand 575 states and 942 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:51:36,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:36,273 INFO L93 Difference]: Finished difference Result 1412 states and 2388 transitions. [2022-11-18 20:51:36,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:51:36,273 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2022-11-18 20:51:36,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:36,280 INFO L225 Difference]: With dead ends: 1412 [2022-11-18 20:51:36,280 INFO L226 Difference]: Without dead ends: 829 [2022-11-18 20:51:36,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:51:36,285 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1496 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 5127 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1604 SdHoareTripleChecker+Valid, 2404 SdHoareTripleChecker+Invalid, 5560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 5127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:36,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1604 Valid, 2404 Invalid, 5560 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [433 Valid, 5127 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-18 20:51:36,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-11-18 20:51:36,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 569. [2022-11-18 20:51:36,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 435 states have (on average 1.645977011494253) internal successors, (716), 453 states have internal predecessors, (716), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-18 20:51:36,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 929 transitions. [2022-11-18 20:51:36,403 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 929 transitions. Word has length 69 [2022-11-18 20:51:36,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:36,403 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 929 transitions. [2022-11-18 20:51:36,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:51:36,404 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 929 transitions. [2022-11-18 20:51:36,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-18 20:51:36,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:36,405 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:36,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:51:36,406 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:36,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:36,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1120655615, now seen corresponding path program 1 times [2022-11-18 20:51:36,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:36,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26942588] [2022-11-18 20:51:36,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:36,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:36,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:51:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:36,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:36,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:51:36,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:36,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:36,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:51:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:36,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:51:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:36,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:51:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:51:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:36,997 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:51:36,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:36,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26942588] [2022-11-18 20:51:36,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26942588] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:36,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:36,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:51:36,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888392221] [2022-11-18 20:51:36,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:37,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:51:37,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:37,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:51:37,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:51:37,003 INFO L87 Difference]: Start difference. First operand 569 states and 929 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:51:45,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:45,114 INFO L93 Difference]: Finished difference Result 1382 states and 2337 transitions. [2022-11-18 20:51:45,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:51:45,115 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2022-11-18 20:51:45,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:45,124 INFO L225 Difference]: With dead ends: 1382 [2022-11-18 20:51:45,124 INFO L226 Difference]: Without dead ends: 829 [2022-11-18 20:51:45,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:51:45,136 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 841 mSDsluCounter, 1971 mSDsCounter, 0 mSdLazyCounter, 5212 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 5422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 5212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:45,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [949 Valid, 2375 Invalid, 5422 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [210 Valid, 5212 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-18 20:51:45,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-11-18 20:51:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 569. [2022-11-18 20:51:45,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 435 states have (on average 1.6436781609195403) internal successors, (715), 453 states have internal predecessors, (715), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-18 20:51:45,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 928 transitions. [2022-11-18 20:51:45,278 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 928 transitions. Word has length 70 [2022-11-18 20:51:45,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:45,278 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 928 transitions. [2022-11-18 20:51:45,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:51:45,279 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 928 transitions. [2022-11-18 20:51:45,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-18 20:51:45,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:45,280 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:45,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:51:45,281 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:45,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:45,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1841165080, now seen corresponding path program 1 times [2022-11-18 20:51:45,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:45,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933317903] [2022-11-18 20:51:45,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:45,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:45,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:51:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:45,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:45,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:51:45,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:45,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:51:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:45,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 20:51:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:45,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:51:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:45,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:51:45,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:45,796 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:51:45,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:45,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933317903] [2022-11-18 20:51:45,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933317903] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:45,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:45,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:51:45,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615734776] [2022-11-18 20:51:45,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:45,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:51:45,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:45,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:51:45,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:51:45,799 INFO L87 Difference]: Start difference. First operand 569 states and 928 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:51:53,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:53,922 INFO L93 Difference]: Finished difference Result 1400 states and 2357 transitions. [2022-11-18 20:51:53,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:51:53,922 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-11-18 20:51:53,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:53,928 INFO L225 Difference]: With dead ends: 1400 [2022-11-18 20:51:53,928 INFO L226 Difference]: Without dead ends: 823 [2022-11-18 20:51:53,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:51:53,932 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 870 mSDsluCounter, 2092 mSDsCounter, 0 mSdLazyCounter, 5226 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 5432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 5226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:53,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 2520 Invalid, 5432 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [206 Valid, 5226 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-18 20:51:53,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-11-18 20:51:54,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 563. [2022-11-18 20:51:54,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 429 states have (on average 1.6363636363636365) internal successors, (702), 447 states have internal predecessors, (702), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-18 20:51:54,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 915 transitions. [2022-11-18 20:51:54,057 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 915 transitions. Word has length 71 [2022-11-18 20:51:54,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:54,057 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 915 transitions. [2022-11-18 20:51:54,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:51:54,058 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 915 transitions. [2022-11-18 20:51:54,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:51:54,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:54,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:54,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:51:54,060 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:54,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash 745123459, now seen corresponding path program 1 times [2022-11-18 20:51:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:54,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500361966] [2022-11-18 20:51:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:54,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:54,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:51:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:54,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:54,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:51:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:54,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:54,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:51:54,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:54,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:51:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:54,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:51:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:54,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:51:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:54,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:51:54,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:54,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500361966] [2022-11-18 20:51:54,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500361966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:54,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:54,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:51:54,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144314142] [2022-11-18 20:51:54,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:54,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:51:54,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:54,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:51:54,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:51:54,591 INFO L87 Difference]: Start difference. First operand 563 states and 915 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:52:02,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:02,525 INFO L93 Difference]: Finished difference Result 1370 states and 2308 transitions. [2022-11-18 20:52:02,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:52:02,526 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2022-11-18 20:52:02,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:02,532 INFO L225 Difference]: With dead ends: 1370 [2022-11-18 20:52:02,532 INFO L226 Difference]: Without dead ends: 823 [2022-11-18 20:52:02,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:52:02,538 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 830 mSDsluCounter, 2007 mSDsCounter, 0 mSdLazyCounter, 5089 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 5299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 5089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:02,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [938 Valid, 2419 Invalid, 5299 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [210 Valid, 5089 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-18 20:52:02,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-11-18 20:52:02,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 563. [2022-11-18 20:52:02,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 429 states have (on average 1.634032634032634) internal successors, (701), 447 states have internal predecessors, (701), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-18 20:52:02,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 914 transitions. [2022-11-18 20:52:02,683 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 914 transitions. Word has length 72 [2022-11-18 20:52:02,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:02,684 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 914 transitions. [2022-11-18 20:52:02,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:52:02,684 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 914 transitions. [2022-11-18 20:52:02,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:52:02,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:02,688 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:02,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:52:02,688 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:02,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:02,689 INFO L85 PathProgramCache]: Analyzing trace with hash -155039253, now seen corresponding path program 1 times [2022-11-18 20:52:02,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:02,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919691131] [2022-11-18 20:52:02,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:02,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:02,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:03,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:03,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:52:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:03,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:03,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:03,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:03,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:52:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:03,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:52:03,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:03,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:52:03,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:03,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:52:03,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:03,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919691131] [2022-11-18 20:52:03,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919691131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:03,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:03,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:52:03,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374320045] [2022-11-18 20:52:03,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:03,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:52:03,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:03,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:52:03,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:52:03,186 INFO L87 Difference]: Start difference. First operand 563 states and 914 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:52:10,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:10,849 INFO L93 Difference]: Finished difference Result 1391 states and 2330 transitions. [2022-11-18 20:52:10,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:52:10,850 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2022-11-18 20:52:10,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:10,855 INFO L225 Difference]: With dead ends: 1391 [2022-11-18 20:52:10,855 INFO L226 Difference]: Without dead ends: 844 [2022-11-18 20:52:10,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:52:10,859 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1421 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 4966 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1529 SdHoareTripleChecker+Valid, 2415 SdHoareTripleChecker+Invalid, 5400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 4966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:10,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1529 Valid, 2415 Invalid, 5400 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [434 Valid, 4966 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-18 20:52:10,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2022-11-18 20:52:10,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 568. [2022-11-18 20:52:10,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 434 states have (on average 1.6267281105990783) internal successors, (706), 452 states have internal predecessors, (706), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-18 20:52:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 919 transitions. [2022-11-18 20:52:10,976 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 919 transitions. Word has length 73 [2022-11-18 20:52:10,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:10,977 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 919 transitions. [2022-11-18 20:52:10,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:52:10,977 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 919 transitions. [2022-11-18 20:52:10,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:52:10,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:10,979 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:10,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:52:10,979 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:10,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:10,980 INFO L85 PathProgramCache]: Analyzing trace with hash -954856244, now seen corresponding path program 1 times [2022-11-18 20:52:10,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:10,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784365117] [2022-11-18 20:52:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:10,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:11,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:11,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:11,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:52:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:11,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:11,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:11,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:52:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:11,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 20:52:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:11,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:52:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:52:11,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:11,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784365117] [2022-11-18 20:52:11,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784365117] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:11,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:11,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:52:11,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289778874] [2022-11-18 20:52:11,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:11,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:52:11,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:11,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:52:11,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:52:11,505 INFO L87 Difference]: Start difference. First operand 568 states and 919 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:52:19,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:19,022 INFO L93 Difference]: Finished difference Result 1393 states and 2329 transitions. [2022-11-18 20:52:19,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:52:19,022 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2022-11-18 20:52:19,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:19,027 INFO L225 Difference]: With dead ends: 1393 [2022-11-18 20:52:19,027 INFO L226 Difference]: Without dead ends: 817 [2022-11-18 20:52:19,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:52:19,031 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1433 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 4972 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 2412 SdHoareTripleChecker+Invalid, 5411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 4972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:19,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 2412 Invalid, 5411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [439 Valid, 4972 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-18 20:52:19,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-11-18 20:52:19,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 557. [2022-11-18 20:52:19,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 423 states have (on average 1.624113475177305) internal successors, (687), 441 states have internal predecessors, (687), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-18 20:52:19,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 900 transitions. [2022-11-18 20:52:19,147 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 900 transitions. Word has length 73 [2022-11-18 20:52:19,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:19,148 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 900 transitions. [2022-11-18 20:52:19,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:52:19,148 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 900 transitions. [2022-11-18 20:52:19,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 20:52:19,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:19,149 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:19,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:52:19,150 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:19,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:19,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1686237128, now seen corresponding path program 1 times [2022-11-18 20:52:19,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:19,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19321093] [2022-11-18 20:52:19,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:19,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:19,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:19,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:19,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:52:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:19,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:19,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:52:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:52:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:19,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:52:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:19,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:52:19,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:19,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19321093] [2022-11-18 20:52:19,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19321093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:19,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:19,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:52:19,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371788375] [2022-11-18 20:52:19,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:19,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:52:19,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:19,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:52:19,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:52:19,643 INFO L87 Difference]: Start difference. First operand 557 states and 900 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:52:27,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:27,727 INFO L93 Difference]: Finished difference Result 1370 states and 2289 transitions. [2022-11-18 20:52:27,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:52:27,728 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-11-18 20:52:27,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:27,733 INFO L225 Difference]: With dead ends: 1370 [2022-11-18 20:52:27,734 INFO L226 Difference]: Without dead ends: 829 [2022-11-18 20:52:27,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:52:27,737 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 789 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 5020 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 5232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 5020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:27,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 2407 Invalid, 5232 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [212 Valid, 5020 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-18 20:52:27,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-11-18 20:52:27,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 563. [2022-11-18 20:52:27,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 429 states have (on average 1.6153846153846154) internal successors, (693), 447 states have internal predecessors, (693), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-18 20:52:27,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 906 transitions. [2022-11-18 20:52:27,867 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 906 transitions. Word has length 74 [2022-11-18 20:52:27,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:27,868 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 906 transitions. [2022-11-18 20:52:27,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:52:27,868 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 906 transitions. [2022-11-18 20:52:27,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 20:52:27,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:27,870 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:27,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:52:27,870 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:27,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:27,871 INFO L85 PathProgramCache]: Analyzing trace with hash -159130038, now seen corresponding path program 1 times [2022-11-18 20:52:27,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:27,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58556555] [2022-11-18 20:52:27,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:27,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:28,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:28,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:28,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:52:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:28,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:28,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:28,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:52:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:28,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:52:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:28,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:52:28,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:28,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:52:28,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:28,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58556555] [2022-11-18 20:52:28,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58556555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:28,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:28,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:52:28,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033798264] [2022-11-18 20:52:28,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:28,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:52:28,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:28,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:52:28,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:52:28,385 INFO L87 Difference]: Start difference. First operand 563 states and 906 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:52:36,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:36,033 INFO L93 Difference]: Finished difference Result 1373 states and 2290 transitions. [2022-11-18 20:52:36,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:52:36,034 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-11-18 20:52:36,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:36,038 INFO L225 Difference]: With dead ends: 1373 [2022-11-18 20:52:36,039 INFO L226 Difference]: Without dead ends: 817 [2022-11-18 20:52:36,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:52:36,043 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 1403 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 4849 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 5282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 4849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:36,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1511 Valid, 2361 Invalid, 5282 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [433 Valid, 4849 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-18 20:52:36,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-11-18 20:52:36,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 557. [2022-11-18 20:52:36,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 423 states have (on average 1.6217494089834514) internal successors, (686), 441 states have internal predecessors, (686), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-18 20:52:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 899 transitions. [2022-11-18 20:52:36,175 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 899 transitions. Word has length 74 [2022-11-18 20:52:36,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:36,175 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 899 transitions. [2022-11-18 20:52:36,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:52:36,175 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 899 transitions. [2022-11-18 20:52:36,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-18 20:52:36,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:36,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:36,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:52:36,179 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:36,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:36,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1851808175, now seen corresponding path program 1 times [2022-11-18 20:52:36,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:36,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681971930] [2022-11-18 20:52:36,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:36,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:36,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:36,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:36,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:36,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:52:36,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:36,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:36,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:36,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:52:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:36,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:52:36,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:36,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:52:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:36,691 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:52:36,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:36,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681971930] [2022-11-18 20:52:36,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681971930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:36,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:36,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:52:36,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691731469] [2022-11-18 20:52:36,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:36,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:52:36,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:36,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:52:36,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:52:36,694 INFO L87 Difference]: Start difference. First operand 557 states and 899 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 20:52:49,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:49,908 INFO L93 Difference]: Finished difference Result 2113 states and 3582 transitions. [2022-11-18 20:52:49,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:52:49,909 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2022-11-18 20:52:49,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:49,921 INFO L225 Difference]: With dead ends: 2113 [2022-11-18 20:52:49,921 INFO L226 Difference]: Without dead ends: 1574 [2022-11-18 20:52:49,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:52:49,925 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 3172 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 5637 mSolverCounterSat, 1177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3310 SdHoareTripleChecker+Valid, 2078 SdHoareTripleChecker+Invalid, 6814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1177 IncrementalHoareTripleChecker+Valid, 5637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:49,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3310 Valid, 2078 Invalid, 6814 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1177 Valid, 5637 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2022-11-18 20:52:49,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2022-11-18 20:52:50,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1197. [2022-11-18 20:52:50,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1197 states, 869 states have (on average 1.571921749136939) internal successors, (1366), 923 states have internal predecessors, (1366), 273 states have call successors, (273), 51 states have call predecessors, (273), 54 states have return successors, (347), 265 states have call predecessors, (347), 269 states have call successors, (347) [2022-11-18 20:52:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1986 transitions. [2022-11-18 20:52:50,320 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1986 transitions. Word has length 75 [2022-11-18 20:52:50,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:50,322 INFO L495 AbstractCegarLoop]: Abstraction has 1197 states and 1986 transitions. [2022-11-18 20:52:50,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-18 20:52:50,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1986 transitions. [2022-11-18 20:52:50,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-18 20:52:50,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:50,326 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:50,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:52:50,326 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:50,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:50,327 INFO L85 PathProgramCache]: Analyzing trace with hash -458912943, now seen corresponding path program 1 times [2022-11-18 20:52:50,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:50,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937042859] [2022-11-18 20:52:50,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:50,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:50,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:50,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:50,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:50,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:52:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:50,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:50,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:50,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:50,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:52:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:50,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:52:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:50,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:52:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:50,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:52:50,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:50,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937042859] [2022-11-18 20:52:50,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937042859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:50,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489976284] [2022-11-18 20:52:50,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:50,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:50,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:50,854 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:50,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:52:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:51,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:52:51,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:51,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:52:51,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489976284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:51,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:52:51,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 20:52:51,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961856245] [2022-11-18 20:52:51,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:51,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:52:51,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:51,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:52:51,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:52:51,304 INFO L87 Difference]: Start difference. First operand 1197 states and 1986 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:52:51,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:51,979 INFO L93 Difference]: Finished difference Result 3463 states and 5820 transitions. [2022-11-18 20:52:51,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:52:51,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2022-11-18 20:52:51,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:51,995 INFO L225 Difference]: With dead ends: 3463 [2022-11-18 20:52:51,996 INFO L226 Difference]: Without dead ends: 2284 [2022-11-18 20:52:52,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:52:52,003 INFO L413 NwaCegarLoop]: 1043 mSDtfsCounter, 863 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1838 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 [2022-11-18 20:52:52,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 1838 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:52:52,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2022-11-18 20:52:52,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 2223. [2022-11-18 20:52:52,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2223 states, 1616 states have (on average 1.5866336633663367) internal successors, (2564), 1724 states have internal predecessors, (2564), 503 states have call successors, (503), 92 states have call predecessors, (503), 103 states have return successors, (664), 492 states have call predecessors, (664), 499 states have call successors, (664) [2022-11-18 20:52:52,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2223 states to 2223 states and 3731 transitions. [2022-11-18 20:52:52,544 INFO L78 Accepts]: Start accepts. Automaton has 2223 states and 3731 transitions. Word has length 75 [2022-11-18 20:52:52,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:52,544 INFO L495 AbstractCegarLoop]: Abstraction has 2223 states and 3731 transitions. [2022-11-18 20:52:52,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:52:52,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2223 states and 3731 transitions. [2022-11-18 20:52:52,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-18 20:52:52,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:52,546 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:52,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 20:52:52,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:52,758 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:52,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:52,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1231115865, now seen corresponding path program 1 times [2022-11-18 20:52:52,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:52,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438696505] [2022-11-18 20:52:52,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:52,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:53,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:53,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:53,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:52:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:53,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:53,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:53,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:53,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:52:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:53,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:52:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:53,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 20:52:53,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:53,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:52:53,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:53,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438696505] [2022-11-18 20:52:53,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438696505] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:52:53,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117407321] [2022-11-18 20:52:53,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:53,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:53,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:52:53,245 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:52:53,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:52:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:53,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:52:53,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:52:53,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:52:53,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:52:53,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117407321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:53,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:52:53,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-18 20:52:53,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874649936] [2022-11-18 20:52:53,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:53,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:52:53,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:53,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:52:53,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:52:53,662 INFO L87 Difference]: Start difference. First operand 2223 states and 3731 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:52:54,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:54,577 INFO L93 Difference]: Finished difference Result 5059 states and 8563 transitions. [2022-11-18 20:52:54,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:52:54,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-11-18 20:52:54,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:54,599 INFO L225 Difference]: With dead ends: 5059 [2022-11-18 20:52:54,600 INFO L226 Difference]: Without dead ends: 2854 [2022-11-18 20:52:54,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:52:54,613 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 861 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1774 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 [2022-11-18 20:52:54,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [861 Valid, 1774 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:52:54,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2854 states. [2022-11-18 20:52:55,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2854 to 2655. [2022-11-18 20:52:55,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2655 states, 1950 states have (on average 1.6) internal successors, (3120), 2075 states have internal predecessors, (3120), 581 states have call successors, (581), 111 states have call predecessors, (581), 123 states have return successors, (746), 568 states have call predecessors, (746), 577 states have call successors, (746) [2022-11-18 20:52:55,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2655 states to 2655 states and 4447 transitions. [2022-11-18 20:52:55,220 INFO L78 Accepts]: Start accepts. Automaton has 2655 states and 4447 transitions. Word has length 76 [2022-11-18 20:52:55,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:55,220 INFO L495 AbstractCegarLoop]: Abstraction has 2655 states and 4447 transitions. [2022-11-18 20:52:55,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:52:55,221 INFO L276 IsEmpty]: Start isEmpty. Operand 2655 states and 4447 transitions. [2022-11-18 20:52:55,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 20:52:55,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:55,223 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:55,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:52:55,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc6fe284-0b04-4671-9567-85d9b3ab069f/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:52:55,429 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:55,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:55,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1359357280, now seen corresponding path program 1 times [2022-11-18 20:52:55,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:55,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812050239] [2022-11-18 20:52:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:55,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:55,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:55,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:56,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:56,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:52:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:56,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:56,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:52:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:56,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:52:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:56,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:52:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:56,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:52:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:56,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 20:52:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:52:56,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:56,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812050239] [2022-11-18 20:52:56,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812050239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:56,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:56,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:52:56,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445586400] [2022-11-18 20:52:56,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:56,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:52:56,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:56,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:52:56,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:52:56,102 INFO L87 Difference]: Start difference. First operand 2655 states and 4447 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 20:53:13,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:13,631 INFO L93 Difference]: Finished difference Result 9769 states and 17343 transitions. [2022-11-18 20:53:13,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:53:13,631 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2022-11-18 20:53:13,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:13,683 INFO L225 Difference]: With dead ends: 9769 [2022-11-18 20:53:13,683 INFO L226 Difference]: Without dead ends: 7132 [2022-11-18 20:53:13,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:53:13,700 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 2431 mSDsluCounter, 2032 mSDsCounter, 0 mSdLazyCounter, 6144 mSolverCounterSat, 832 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2570 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 6976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 832 IncrementalHoareTripleChecker+Valid, 6144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:13,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2570 Valid, 2595 Invalid, 6976 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [832 Valid, 6144 Invalid, 0 Unknown, 0 Unchecked, 13.7s Time] [2022-11-18 20:53:13,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7132 states. [2022-11-18 20:53:15,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7132 to 5867. [2022-11-18 20:53:15,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5867 states, 4171 states have (on average 1.575161831695037) internal successors, (6570), 4516 states have internal predecessors, (6570), 1402 states have call successors, (1402), 216 states have call predecessors, (1402), 293 states have return successors, (2288), 1400 states have call predecessors, (2288), 1396 states have call successors, (2288) [2022-11-18 20:53:15,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5867 states to 5867 states and 10260 transitions. [2022-11-18 20:53:15,547 INFO L78 Accepts]: Start accepts. Automaton has 5867 states and 10260 transitions. Word has length 78 [2022-11-18 20:53:15,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:15,548 INFO L495 AbstractCegarLoop]: Abstraction has 5867 states and 10260 transitions. [2022-11-18 20:53:15,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-18 20:53:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 5867 states and 10260 transitions. [2022-11-18 20:53:15,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 20:53:15,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:15,549 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:15,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:53:15,550 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:15,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:15,550 INFO L85 PathProgramCache]: Analyzing trace with hash -599142051, now seen corresponding path program 1 times [2022-11-18 20:53:15,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:15,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138787581] [2022-11-18 20:53:15,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:15,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:15,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:53:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:53:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:15,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:53:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:15,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:53:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:15,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:53:15,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:15,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:53:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:53:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:53:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:15,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 20:53:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:15,908 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-18 20:53:15,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:15,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138787581] [2022-11-18 20:53:15,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138787581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:15,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:15,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:53:15,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320385241] [2022-11-18 20:53:15,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:15,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:53:15,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:15,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:53:15,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:53:15,911 INFO L87 Difference]: Start difference. First operand 5867 states and 10260 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:53:24,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:24,290 INFO L93 Difference]: Finished difference Result 12689 states and 22522 transitions. [2022-11-18 20:53:24,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:53:24,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2022-11-18 20:53:24,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:24,343 INFO L225 Difference]: With dead ends: 12689 [2022-11-18 20:53:24,344 INFO L226 Difference]: Without dead ends: 6840 [2022-11-18 20:53:24,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:53:24,375 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 784 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:24,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1555 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-18 20:53:24,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6840 states. [2022-11-18 20:53:26,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6840 to 5875. [2022-11-18 20:53:26,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5875 states, 4177 states have (on average 1.5738568350490783) internal successors, (6574), 4522 states have internal predecessors, (6574), 1402 states have call successors, (1402), 220 states have call predecessors, (1402), 295 states have return successors, (2278), 1398 states have call predecessors, (2278), 1396 states have call successors, (2278) [2022-11-18 20:53:26,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5875 states to 5875 states and 10254 transitions. [2022-11-18 20:53:26,094 INFO L78 Accepts]: Start accepts. Automaton has 5875 states and 10254 transitions. Word has length 79 [2022-11-18 20:53:26,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:26,095 INFO L495 AbstractCegarLoop]: Abstraction has 5875 states and 10254 transitions. [2022-11-18 20:53:26,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:53:26,096 INFO L276 IsEmpty]: Start isEmpty. Operand 5875 states and 10254 transitions. [2022-11-18 20:53:26,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-18 20:53:26,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:26,098 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:26,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:53:26,098 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:26,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:26,099 INFO L85 PathProgramCache]: Analyzing trace with hash 687934125, now seen corresponding path program 1 times [2022-11-18 20:53:26,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:26,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460552230] [2022-11-18 20:53:26,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:26,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:26,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:53:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:53:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:26,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:53:26,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:26,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:53:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:26,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:53:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:53:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:26,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:53:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:26,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:53:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:26,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:53:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:26,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:53:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:53:26,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:26,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460552230] [2022-11-18 20:53:26,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [460552230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:26,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:26,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:53:26,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924745432] [2022-11-18 20:53:26,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:26,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:53:26,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:26,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:53:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:26,577 INFO L87 Difference]: Start difference. First operand 5875 states and 10254 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:53:45,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:45,856 INFO L93 Difference]: Finished difference Result 20164 states and 37621 transitions. [2022-11-18 20:53:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:53:45,857 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2022-11-18 20:53:45,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:45,962 INFO L225 Difference]: With dead ends: 20164 [2022-11-18 20:53:45,963 INFO L226 Difference]: Without dead ends: 14307 [2022-11-18 20:53:46,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:53:46,004 INFO L413 NwaCegarLoop]: 599 mSDtfsCounter, 3525 mSDsluCounter, 2056 mSDsCounter, 0 mSdLazyCounter, 5794 mSolverCounterSat, 1221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3662 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 7015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1221 IncrementalHoareTripleChecker+Valid, 5794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:46,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3662 Valid, 2655 Invalid, 7015 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1221 Valid, 5794 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2022-11-18 20:53:46,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14307 states. [2022-11-18 20:53:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14307 to 11817. [2022-11-18 20:53:49,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11817 states, 8355 states have (on average 1.5684021543985638) internal successors, (13104), 9053 states have internal predecessors, (13104), 2868 states have call successors, (2868), 434 states have call predecessors, (2868), 593 states have return successors, (5248), 2876 states have call predecessors, (5248), 2858 states have call successors, (5248) [2022-11-18 20:53:49,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11817 states to 11817 states and 21220 transitions. [2022-11-18 20:53:49,833 INFO L78 Accepts]: Start accepts. Automaton has 11817 states and 21220 transitions. Word has length 87 [2022-11-18 20:53:49,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:49,834 INFO L495 AbstractCegarLoop]: Abstraction has 11817 states and 21220 transitions. [2022-11-18 20:53:49,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:53:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand 11817 states and 21220 transitions. [2022-11-18 20:53:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-18 20:53:49,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:49,837 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:49,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:53:49,839 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:49,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:49,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1924648248, now seen corresponding path program 1 times [2022-11-18 20:53:49,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:49,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243339467] [2022-11-18 20:53:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:49,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:53:50,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:53:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:53:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:53:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:53:50,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:53:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:53:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:53:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:53:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-18 20:53:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:50,275 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:53:50,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:50,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243339467] [2022-11-18 20:53:50,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243339467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:50,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:50,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:53:50,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589268560] [2022-11-18 20:53:50,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:50,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:53:50,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:50,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:53:50,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:53:50,278 INFO L87 Difference]: Start difference. First operand 11817 states and 21220 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 20:54:00,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:00,782 INFO L93 Difference]: Finished difference Result 25350 states and 46602 transitions. [2022-11-18 20:54:00,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:54:00,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-11-18 20:54:00,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:00,887 INFO L225 Difference]: With dead ends: 25350 [2022-11-18 20:54:00,887 INFO L226 Difference]: Without dead ends: 13551 [2022-11-18 20:54:00,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:54:00,954 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 791 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 2705 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 2900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 2705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:00,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 1570 Invalid, 2900 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 2705 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-18 20:54:00,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13551 states. [2022-11-18 20:54:04,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13551 to 11857. [2022-11-18 20:54:04,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11857 states, 8391 states have (on average 1.5664402335836014) internal successors, (13144), 9081 states have internal predecessors, (13144), 2868 states have call successors, (2868), 450 states have call predecessors, (2868), 597 states have return successors, (5234), 2872 states have call predecessors, (5234), 2858 states have call successors, (5234) [2022-11-18 20:54:04,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11857 states to 11857 states and 21246 transitions. [2022-11-18 20:54:04,923 INFO L78 Accepts]: Start accepts. Automaton has 11857 states and 21246 transitions. Word has length 88 [2022-11-18 20:54:04,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:04,923 INFO L495 AbstractCegarLoop]: Abstraction has 11857 states and 21246 transitions. [2022-11-18 20:54:04,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 20:54:04,924 INFO L276 IsEmpty]: Start isEmpty. Operand 11857 states and 21246 transitions. [2022-11-18 20:54:04,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 20:54:04,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:04,926 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 20:54:04,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:54:04,927 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:04,928 INFO L85 PathProgramCache]: Analyzing trace with hash -18431621, now seen corresponding path program 1 times [2022-11-18 20:54:04,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:04,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332333759] [2022-11-18 20:54:04,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:04,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:54:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:54:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:54:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:54:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:54:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:54:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:54:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:54:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:54:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:54:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 20:54:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:05,428 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 20:54:05,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:05,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332333759] [2022-11-18 20:54:05,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332333759] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:05,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:05,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:54:05,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061056708] [2022-11-18 20:54:05,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:05,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:54:05,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:05,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:54:05,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:54:05,432 INFO L87 Difference]: Start difference. First operand 11857 states and 21246 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 20:54:29,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:29,826 INFO L93 Difference]: Finished difference Result 40469 states and 80608 transitions. [2022-11-18 20:54:29,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:54:29,827 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-11-18 20:54:29,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:30,051 INFO L225 Difference]: With dead ends: 40469 [2022-11-18 20:54:30,051 INFO L226 Difference]: Without dead ends: 28630 [2022-11-18 20:54:30,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:54:30,142 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 2408 mSDsluCounter, 2054 mSDsCounter, 0 mSdLazyCounter, 6114 mSolverCounterSat, 813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2545 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 6927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 813 IncrementalHoareTripleChecker+Valid, 6114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:30,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2545 Valid, 2645 Invalid, 6927 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [813 Valid, 6114 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2022-11-18 20:54:30,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28630 states. [2022-11-18 20:54:37,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28630 to 23761. [2022-11-18 20:54:37,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23761 states, 16806 states have (on average 1.5627751993335715) internal successors, (26264), 18187 states have internal predecessors, (26264), 5749 states have call successors, (5749), 894 states have call predecessors, (5749), 1205 states have return successors, (12190), 5778 states have call predecessors, (12190), 5731 states have call successors, (12190) [2022-11-18 20:54:37,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23761 states to 23761 states and 44203 transitions. [2022-11-18 20:54:37,895 INFO L78 Accepts]: Start accepts. Automaton has 23761 states and 44203 transitions. Word has length 97 [2022-11-18 20:54:37,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:37,896 INFO L495 AbstractCegarLoop]: Abstraction has 23761 states and 44203 transitions. [2022-11-18 20:54:37,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-18 20:54:37,896 INFO L276 IsEmpty]: Start isEmpty. Operand 23761 states and 44203 transitions. [2022-11-18 20:54:37,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-18 20:54:37,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:37,899 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-18 20:54:37,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:54:37,899 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:37,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:37,900 INFO L85 PathProgramCache]: Analyzing trace with hash 689445490, now seen corresponding path program 1 times [2022-11-18 20:54:37,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:37,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55319278] [2022-11-18 20:54:37,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:37,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:54:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:54:38,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:54:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:54:38,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:54:38,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:54:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:54:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:54:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 20:54:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:54:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 20:54:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:38,275 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:54:38,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:38,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55319278] [2022-11-18 20:54:38,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55319278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:38,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:38,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:54:38,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306335508] [2022-11-18 20:54:38,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:38,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:54:38,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:38,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:54:38,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:54:38,279 INFO L87 Difference]: Start difference. First operand 23761 states and 44203 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 20:54:53,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:53,548 INFO L93 Difference]: Finished difference Result 50837 states and 98531 transitions. [2022-11-18 20:54:53,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:54:53,549 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2022-11-18 20:54:53,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:53,774 INFO L225 Difference]: With dead ends: 50837 [2022-11-18 20:54:53,775 INFO L226 Difference]: Without dead ends: 27094 [2022-11-18 20:54:53,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:54:53,974 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 793 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:53,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1560 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 2711 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-18 20:54:54,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27094 states.