./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:43:38,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:43:38,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:43:38,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:43:38,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:43:38,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:43:38,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:43:38,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:43:38,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:43:38,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:43:38,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:43:38,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:43:38,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:43:38,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:43:38,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:43:38,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:43:38,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:43:38,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:43:38,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:43:38,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:43:38,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:43:38,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:43:38,157 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:43:38,158 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:43:38,162 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:43:38,162 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:43:38,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:43:38,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:43:38,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:43:38,165 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:43:38,165 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:43:38,166 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:43:38,167 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:43:38,168 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:43:38,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:43:38,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:43:38,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:43:38,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:43:38,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:43:38,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:43:38,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:43:38,174 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:43:38,198 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:43:38,198 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:43:38,199 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:43:38,199 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:43:38,200 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:43:38,200 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:43:38,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:43:38,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:43:38,201 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:43:38,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:43:38,202 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:43:38,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:43:38,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:43:38,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:43:38,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:43:38,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:43:38,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:43:38,204 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:43:38,204 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:43:38,204 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:43:38,204 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:43:38,204 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:43:38,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:43:38,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:43:38,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:43:38,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:43:38,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:43:38,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:43:38,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:43:38,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:43:38,207 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:43:38,207 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:43:38,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:43:38,207 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_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d96f41c83679efe744540e7fde7918287d6cc79be28bb1ad9b63bf8e0d07ce19 [2022-11-20 11:43:38,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:43:38,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:43:38,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:43:38,513 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:43:38,514 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:43:38,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2022-11-20 11:43:41,634 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:43:41,975 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:43:41,977 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c [2022-11-20 11:43:42,011 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/data/361427f34/386274ac95c14cce812779b6850ae362/FLAG7e464835d [2022-11-20 11:43:42,034 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/data/361427f34/386274ac95c14cce812779b6850ae362 [2022-11-20 11:43:42,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:43:42,042 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:43:42,043 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:43:42,043 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:43:42,047 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:43:42,048 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:43:42" (1/1) ... [2022-11-20 11:43:42,049 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1de1cfa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:42, skipping insertion in model container [2022-11-20 11:43:42,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:43:42" (1/1) ... [2022-11-20 11:43:42,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:43:42,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:43:42,468 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2022-11-20 11:43:42,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:43:42,682 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:43:42,742 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/sv-benchmarks/c/product-lines/elevator_spec2_product19.cil.c[34453,34466] [2022-11-20 11:43:42,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:43:42,827 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:43:42,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:42 WrapperNode [2022-11-20 11:43:42,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:43:42,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:43:42,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:43:42,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:43:42,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:42" (1/1) ... [2022-11-20 11:43:42,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:42" (1/1) ... [2022-11-20 11:43:42,977 INFO L138 Inliner]: procedures = 94, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1119 [2022-11-20 11:43:42,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:43:42,987 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:43:42,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:43:42,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:43:42,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:42" (1/1) ... [2022-11-20 11:43:42,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:42" (1/1) ... [2022-11-20 11:43:43,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:42" (1/1) ... [2022-11-20 11:43:43,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:42" (1/1) ... [2022-11-20 11:43:43,045 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:42" (1/1) ... [2022-11-20 11:43:43,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:42" (1/1) ... [2022-11-20 11:43:43,062 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:42" (1/1) ... [2022-11-20 11:43:43,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:42" (1/1) ... [2022-11-20 11:43:43,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:43:43,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:43:43,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:43:43,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:43:43,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:42" (1/1) ... [2022-11-20 11:43:43,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:43:43,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:43:43,130 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:43:43,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:43:43,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:43:43,186 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-20 11:43:43,186 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-20 11:43:43,186 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-20 11:43:43,186 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-20 11:43:43,187 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-11-20 11:43:43,187 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-11-20 11:43:43,187 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-20 11:43:43,187 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-20 11:43:43,187 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-20 11:43:43,187 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-20 11:43:43,187 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-20 11:43:43,188 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-20 11:43:43,188 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-20 11:43:43,188 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-20 11:43:43,188 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 11:43:43,188 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 11:43:43,188 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 11:43:43,188 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 11:43:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-20 11:43:43,189 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-20 11:43:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-20 11:43:43,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-20 11:43:43,189 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-20 11:43:43,189 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-20 11:43:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-20 11:43:43,190 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-20 11:43:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-20 11:43:43,190 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-20 11:43:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-20 11:43:43,190 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-20 11:43:43,190 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-20 11:43:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-20 11:43:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-20 11:43:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-20 11:43:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-20 11:43:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-20 11:43:43,191 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-20 11:43:43,191 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-20 11:43:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-20 11:43:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-20 11:43:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:43:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-20 11:43:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-20 11:43:43,192 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-20 11:43:43,192 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-20 11:43:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-20 11:43:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-20 11:43:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:43:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:43:43,193 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-20 11:43:43,193 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-20 11:43:43,353 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:43:43,356 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:43:44,554 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:43:44,566 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:43:44,566 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:43:44,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:43:44 BoogieIcfgContainer [2022-11-20 11:43:44,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:43:44,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:43:44,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:43:44,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:43:44,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:43:42" (1/3) ... [2022-11-20 11:43:44,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb0e4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:43:44, skipping insertion in model container [2022-11-20 11:43:44,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:43:42" (2/3) ... [2022-11-20 11:43:44,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb0e4d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:43:44, skipping insertion in model container [2022-11-20 11:43:44,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:43:44" (3/3) ... [2022-11-20 11:43:44,579 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product19.cil.c [2022-11-20 11:43:44,600 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:43:44,600 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:43:44,667 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:43:44,673 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;@19766731, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:43:44,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:43:44,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 560 states, 438 states have (on average 1.6894977168949772) internal successors, (740), 459 states have internal predecessors, (740), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-20 11:43:44,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-20 11:43:44,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:44,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:44,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:44,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:44,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1065418536, now seen corresponding path program 1 times [2022-11-20 11:43:44,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:44,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067997573] [2022-11-20 11:43:44,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:44,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:45,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:43:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:45,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:45,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:43:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:45,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:43:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:45,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:45,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:45,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:45,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:45,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:43:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:45,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:43:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:45,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:46,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:46,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:43:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:46,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:43:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:43:46,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:46,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067997573] [2022-11-20 11:43:46,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067997573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:46,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:46,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:43:46,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817936969] [2022-11-20 11:43:46,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:46,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:43:46,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:46,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:43:46,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:43:46,069 INFO L87 Difference]: Start difference. First operand has 560 states, 438 states have (on average 1.6894977168949772) internal successors, (740), 459 states have internal predecessors, (740), 96 states have call successors, (96), 24 states have call predecessors, (96), 24 states have return successors, (96), 90 states have call predecessors, (96), 96 states have call successors, (96) Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:43:53,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:53,725 INFO L93 Difference]: Finished difference Result 1361 states and 2301 transitions. [2022-11-20 11:43:53,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:43:53,729 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-11-20 11:43:53,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:53,751 INFO L225 Difference]: With dead ends: 1361 [2022-11-20 11:43:53,752 INFO L226 Difference]: Without dead ends: 813 [2022-11-20 11:43:53,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:43:53,765 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1408 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 2982 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1881 SdHoareTripleChecker+Invalid, 3386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:53,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1881 Invalid, 3386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [404 Valid, 2982 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-20 11:43:53,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-11-20 11:43:54,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 552. [2022-11-20 11:43:54,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 432 states have (on average 1.6851851851851851) internal successors, (728), 451 states have internal predecessors, (728), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:43:54,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 915 transitions. [2022-11-20 11:43:54,023 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 915 transitions. Word has length 102 [2022-11-20 11:43:54,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:54,024 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 915 transitions. [2022-11-20 11:43:54,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:43:54,024 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 915 transitions. [2022-11-20 11:43:54,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-20 11:43:54,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:54,031 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:54,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:43:54,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:54,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:54,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1233827054, now seen corresponding path program 1 times [2022-11-20 11:43:54,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:54,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311626266] [2022-11-20 11:43:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:54,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:54,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:43:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:54,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:54,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:43:54,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:54,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 11:43:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:54,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:54,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:54,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:54,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:43:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:54,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:43:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:54,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:54,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:54,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:43:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:54,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:43:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:54,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:43:54,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:54,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311626266] [2022-11-20 11:43:54,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311626266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:54,675 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:54,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:43:54,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611208546] [2022-11-20 11:43:54,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:54,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:43:54,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:54,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:43:54,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:43:54,679 INFO L87 Difference]: Start difference. First operand 552 states and 915 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:44:01,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:01,914 INFO L93 Difference]: Finished difference Result 1347 states and 2263 transitions. [2022-11-20 11:44:01,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:44:01,917 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-11-20 11:44:01,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:01,924 INFO L225 Difference]: With dead ends: 1347 [2022-11-20 11:44:01,925 INFO L226 Difference]: Without dead ends: 813 [2022-11-20 11:44:01,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:44:01,929 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 1401 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 2976 mSolverCounterSat, 402 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 3378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 402 IncrementalHoareTripleChecker+Valid, 2976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:01,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1862 Invalid, 3378 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [402 Valid, 2976 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-20 11:44:01,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-11-20 11:44:02,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 552. [2022-11-20 11:44:02,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 432 states have (on average 1.6828703703703705) internal successors, (727), 451 states have internal predecessors, (727), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:44:02,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 914 transitions. [2022-11-20 11:44:02,086 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 914 transitions. Word has length 105 [2022-11-20 11:44:02,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:02,087 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 914 transitions. [2022-11-20 11:44:02,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:44:02,087 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 914 transitions. [2022-11-20 11:44:02,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-20 11:44:02,095 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:02,095 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:02,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:44:02,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:02,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:02,097 INFO L85 PathProgramCache]: Analyzing trace with hash 618878632, now seen corresponding path program 1 times [2022-11-20 11:44:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:02,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439258780] [2022-11-20 11:44:02,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:02,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:44:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-20 11:44:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-20 11:44:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:44:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:44:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:44:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:44:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:44:02,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:02,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439258780] [2022-11-20 11:44:02,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439258780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:02,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:02,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:44:02,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180403621] [2022-11-20 11:44:02,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:02,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:44:02,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:02,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:44:02,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:44:02,737 INFO L87 Difference]: Start difference. First operand 552 states and 914 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:44:10,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:10,006 INFO L93 Difference]: Finished difference Result 1347 states and 2262 transitions. [2022-11-20 11:44:10,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:44:10,006 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-11-20 11:44:10,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:10,013 INFO L225 Difference]: With dead ends: 1347 [2022-11-20 11:44:10,013 INFO L226 Difference]: Without dead ends: 813 [2022-11-20 11:44:10,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:44:10,017 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 969 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 3060 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 3060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:10,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 1905 Invalid, 3315 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [255 Valid, 3060 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-20 11:44:10,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-11-20 11:44:10,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 552. [2022-11-20 11:44:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 432 states have (on average 1.6805555555555556) internal successors, (726), 451 states have internal predecessors, (726), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:44:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 913 transitions. [2022-11-20 11:44:10,163 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 913 transitions. Word has length 106 [2022-11-20 11:44:10,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:10,164 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 913 transitions. [2022-11-20 11:44:10,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:44:10,164 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 913 transitions. [2022-11-20 11:44:10,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-20 11:44:10,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:10,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:10,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:44:10,169 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:10,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:10,170 INFO L85 PathProgramCache]: Analyzing trace with hash -2133787826, now seen corresponding path program 1 times [2022-11-20 11:44:10,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:10,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687303737] [2022-11-20 11:44:10,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:10,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:10,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:44:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:10,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:10,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:44:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:10,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-20 11:44:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:10,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:10,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:10,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:10,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:10,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:44:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:10,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:44:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:10,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:10,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:44:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:10,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:44:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:44:10,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:10,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687303737] [2022-11-20 11:44:10,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687303737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:10,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:10,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:44:10,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027016668] [2022-11-20 11:44:10,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:10,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:44:10,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:10,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:44:10,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:44:10,777 INFO L87 Difference]: Start difference. First operand 552 states and 913 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:44:17,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:17,017 INFO L93 Difference]: Finished difference Result 1347 states and 2261 transitions. [2022-11-20 11:44:17,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:44:17,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-11-20 11:44:17,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:17,024 INFO L225 Difference]: With dead ends: 1347 [2022-11-20 11:44:17,024 INFO L226 Difference]: Without dead ends: 813 [2022-11-20 11:44:17,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:44:17,028 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1835 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 2787 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1916 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 3343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 2787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:17,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1916 Valid, 1790 Invalid, 3343 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [556 Valid, 2787 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-20 11:44:17,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-11-20 11:44:17,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 552. [2022-11-20 11:44:17,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 432 states have (on average 1.6782407407407407) internal successors, (725), 451 states have internal predecessors, (725), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:44:17,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 912 transitions. [2022-11-20 11:44:17,149 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 912 transitions. Word has length 107 [2022-11-20 11:44:17,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:17,150 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 912 transitions. [2022-11-20 11:44:17,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:44:17,150 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 912 transitions. [2022-11-20 11:44:17,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-20 11:44:17,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:17,154 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:17,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:44:17,154 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:17,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:17,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1624102684, now seen corresponding path program 1 times [2022-11-20 11:44:17,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:17,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824738854] [2022-11-20 11:44:17,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:17,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:17,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:17,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:44:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:17,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:17,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:44:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:17,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 11:44:17,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:17,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:17,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:17,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:17,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:44:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:17,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:44:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:17,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:17,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:17,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:44:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:44:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:17,681 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:44:17,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:17,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824738854] [2022-11-20 11:44:17,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824738854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:17,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:17,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:44:17,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536295388] [2022-11-20 11:44:17,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:17,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:44:17,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:17,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:44:17,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:44:17,687 INFO L87 Difference]: Start difference. First operand 552 states and 912 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:44:23,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:23,955 INFO L93 Difference]: Finished difference Result 1347 states and 2260 transitions. [2022-11-20 11:44:23,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:44:23,955 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-11-20 11:44:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:23,961 INFO L225 Difference]: With dead ends: 1347 [2022-11-20 11:44:23,961 INFO L226 Difference]: Without dead ends: 813 [2022-11-20 11:44:23,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:44:23,966 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1836 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 2785 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 3347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 2785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:23,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1917 Valid, 1774 Invalid, 3347 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [562 Valid, 2785 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-20 11:44:23,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 813 states. [2022-11-20 11:44:24,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 813 to 552. [2022-11-20 11:44:24,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 432 states have (on average 1.6759259259259258) internal successors, (724), 451 states have internal predecessors, (724), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:44:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 911 transitions. [2022-11-20 11:44:24,143 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 911 transitions. Word has length 108 [2022-11-20 11:44:24,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:24,144 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 911 transitions. [2022-11-20 11:44:24,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:44:24,145 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 911 transitions. [2022-11-20 11:44:24,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-20 11:44:24,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:24,148 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:24,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:44:24,149 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:24,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:24,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1234234250, now seen corresponding path program 1 times [2022-11-20 11:44:24,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:24,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855058713] [2022-11-20 11:44:24,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:24,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:44:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:24,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:24,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:44:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:24,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:44:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:24,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:24,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:24,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:24,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:44:24,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:24,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:44:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:24,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:24,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:24,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:44:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:24,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:44:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:24,891 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:44:24,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:24,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855058713] [2022-11-20 11:44:24,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855058713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:24,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:24,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:44:24,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298975207] [2022-11-20 11:44:24,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:24,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:44:24,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:24,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:44:24,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:44:24,895 INFO L87 Difference]: Start difference. First operand 552 states and 911 transitions. Second operand has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:44:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:34,482 INFO L93 Difference]: Finished difference Result 1324 states and 2210 transitions. [2022-11-20 11:44:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:44:34,483 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2022-11-20 11:44:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:34,490 INFO L225 Difference]: With dead ends: 1324 [2022-11-20 11:44:34,491 INFO L226 Difference]: Without dead ends: 839 [2022-11-20 11:44:34,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:44:34,504 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1116 mSDsluCounter, 3712 mSDsCounter, 0 mSdLazyCounter, 7117 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 4193 SdHoareTripleChecker+Invalid, 7389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 7117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:34,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 4193 Invalid, 7389 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [272 Valid, 7117 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-20 11:44:34,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2022-11-20 11:44:34,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 565. [2022-11-20 11:44:34,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6719457013574661) internal successors, (739), 463 states have internal predecessors, (739), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-11-20 11:44:34,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 930 transitions. [2022-11-20 11:44:34,681 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 930 transitions. Word has length 109 [2022-11-20 11:44:34,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:34,682 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 930 transitions. [2022-11-20 11:44:34,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.7272727272727275) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:44:34,683 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 930 transitions. [2022-11-20 11:44:34,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-20 11:44:34,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:34,690 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:34,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:44:34,691 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:34,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:34,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1219984105, now seen corresponding path program 1 times [2022-11-20 11:44:34,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:34,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335456130] [2022-11-20 11:44:34,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:34,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:34,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:44:34,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:34,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:34,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:44:34,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:35,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-20 11:44:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:35,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:35,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:35,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:35,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:44:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:35,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:44:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:35,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:35,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:35,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:44:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:35,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:44:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:44:35,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:35,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335456130] [2022-11-20 11:44:35,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335456130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:35,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:35,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:44:35,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755585384] [2022-11-20 11:44:35,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:35,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:44:35,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:35,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:44:35,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:44:35,234 INFO L87 Difference]: Start difference. First operand 565 states and 930 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:44:42,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:42,053 INFO L93 Difference]: Finished difference Result 1338 states and 2233 transitions. [2022-11-20 11:44:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:44:42,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-11-20 11:44:42,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:42,059 INFO L225 Difference]: With dead ends: 1338 [2022-11-20 11:44:42,060 INFO L226 Difference]: Without dead ends: 835 [2022-11-20 11:44:42,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:44:42,064 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1074 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 2959 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:42,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1907 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 2959 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 11:44:42,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-11-20 11:44:42,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 565. [2022-11-20 11:44:42,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.660633484162896) internal successors, (734), 463 states have internal predecessors, (734), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-11-20 11:44:42,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 925 transitions. [2022-11-20 11:44:42,266 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 925 transitions. Word has length 109 [2022-11-20 11:44:42,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:42,267 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 925 transitions. [2022-11-20 11:44:42,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:44:42,267 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 925 transitions. [2022-11-20 11:44:42,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-20 11:44:42,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:42,271 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:42,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:44:42,272 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:42,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:42,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1734696347, now seen corresponding path program 1 times [2022-11-20 11:44:42,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:42,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373791966] [2022-11-20 11:44:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:42,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:42,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:42,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:44:42,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:42,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:42,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:44:42,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:42,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-20 11:44:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:42,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:42,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:42,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:42,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:44:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:42,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:44:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:42,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:42,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:44:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:42,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:44:42,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:44:42,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:42,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373791966] [2022-11-20 11:44:42,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373791966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:42,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:42,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:44:42,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694600515] [2022-11-20 11:44:42,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:42,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:44:42,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:42,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:44:42,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:44:42,752 INFO L87 Difference]: Start difference. First operand 565 states and 925 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:44:49,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:49,488 INFO L93 Difference]: Finished difference Result 1338 states and 2228 transitions. [2022-11-20 11:44:49,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:44:49,489 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2022-11-20 11:44:49,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:49,494 INFO L225 Difference]: With dead ends: 1338 [2022-11-20 11:44:49,494 INFO L226 Difference]: Without dead ends: 835 [2022-11-20 11:44:49,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:44:49,498 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1063 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 2939 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 3198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:49,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1144 Valid, 1889 Invalid, 3198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2939 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 11:44:49,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-11-20 11:44:49,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 565. [2022-11-20 11:44:49,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6493212669683257) internal successors, (729), 463 states have internal predecessors, (729), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-11-20 11:44:49,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 920 transitions. [2022-11-20 11:44:49,666 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 920 transitions. Word has length 110 [2022-11-20 11:44:49,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:49,666 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 920 transitions. [2022-11-20 11:44:49,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:44:49,667 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 920 transitions. [2022-11-20 11:44:49,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-20 11:44:49,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:49,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:49,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:44:49,671 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:49,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:49,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1240337234, now seen corresponding path program 1 times [2022-11-20 11:44:49,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:49,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529740713] [2022-11-20 11:44:49,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:49,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:49,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:44:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:49,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:49,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:49,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:44:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:50,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:44:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:50,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:50,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:50,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:44:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:50,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:44:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:50,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:50,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:50,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:50,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:44:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:50,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:44:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:44:50,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:50,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529740713] [2022-11-20 11:44:50,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529740713] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:50,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:50,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:44:50,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476914370] [2022-11-20 11:44:50,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:50,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:44:50,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:50,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:44:50,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:44:50,169 INFO L87 Difference]: Start difference. First operand 565 states and 920 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:44:56,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:56,932 INFO L93 Difference]: Finished difference Result 1338 states and 2223 transitions. [2022-11-20 11:44:56,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:44:56,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-11-20 11:44:56,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:56,937 INFO L225 Difference]: With dead ends: 1338 [2022-11-20 11:44:56,937 INFO L226 Difference]: Without dead ends: 835 [2022-11-20 11:44:56,940 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:44:56,941 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1050 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 2920 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 1886 SdHoareTripleChecker+Invalid, 3181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 2920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:56,941 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 1886 Invalid, 3181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 2920 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 11:44:56,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-11-20 11:44:57,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 565. [2022-11-20 11:44:57,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6380090497737556) internal successors, (724), 463 states have internal predecessors, (724), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-11-20 11:44:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 915 transitions. [2022-11-20 11:44:57,116 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 915 transitions. Word has length 111 [2022-11-20 11:44:57,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:44:57,116 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 915 transitions. [2022-11-20 11:44:57,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:44:57,116 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 915 transitions. [2022-11-20 11:44:57,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 11:44:57,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:44:57,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:44:57,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:44:57,121 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:44:57,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:44:57,121 INFO L85 PathProgramCache]: Analyzing trace with hash -764644192, now seen corresponding path program 1 times [2022-11-20 11:44:57,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:44:57,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205392511] [2022-11-20 11:44:57,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:44:57,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:44:57,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:57,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:44:57,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:57,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:57,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:44:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:57,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:44:57,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:57,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:57,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:57,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:57,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:57,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:44:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:57,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:44:57,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:57,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:57,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:57,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:44:57,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:57,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:44:57,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:57,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:44:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:44:57,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:44:57,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:44:57,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205392511] [2022-11-20 11:44:57,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205392511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:44:57,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:44:57,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:44:57,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162525957] [2022-11-20 11:44:57,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:44:57,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:44:57,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:44:57,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:44:57,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:44:57,695 INFO L87 Difference]: Start difference. First operand 565 states and 915 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:45:06,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:06,540 INFO L93 Difference]: Finished difference Result 1330 states and 2200 transitions. [2022-11-20 11:45:06,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:45:06,541 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 112 [2022-11-20 11:45:06,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:06,546 INFO L225 Difference]: With dead ends: 1330 [2022-11-20 11:45:06,546 INFO L226 Difference]: Without dead ends: 842 [2022-11-20 11:45:06,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:45:06,549 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1025 mSDsluCounter, 2839 mSDsCounter, 0 mSdLazyCounter, 5371 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 3326 SdHoareTripleChecker+Invalid, 5634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 5371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:06,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 3326 Invalid, 5634 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [263 Valid, 5371 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-20 11:45:06,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-11-20 11:45:06,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 565. [2022-11-20 11:45:06,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6357466063348416) internal successors, (723), 463 states have internal predecessors, (723), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-11-20 11:45:06,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 914 transitions. [2022-11-20 11:45:06,741 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 914 transitions. Word has length 112 [2022-11-20 11:45:06,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:06,741 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 914 transitions. [2022-11-20 11:45:06,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:45:06,742 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 914 transitions. [2022-11-20 11:45:06,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-20 11:45:06,746 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:06,746 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:06,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:45:06,747 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:45:06,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:06,747 INFO L85 PathProgramCache]: Analyzing trace with hash -728341632, now seen corresponding path program 1 times [2022-11-20 11:45:06,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:06,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922980332] [2022-11-20 11:45:06,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:06,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:06,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:45:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:06,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:06,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:45:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:45:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:07,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:07,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:07,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:45:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:07,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:45:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:07,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:07,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:07,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:45:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:07,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:45:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:07,230 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:45:07,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:07,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922980332] [2022-11-20 11:45:07,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922980332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:07,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:07,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:45:07,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037671523] [2022-11-20 11:45:07,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:07,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:45:07,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:07,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:45:07,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:45:07,232 INFO L87 Difference]: Start difference. First operand 565 states and 914 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:45:13,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:13,271 INFO L93 Difference]: Finished difference Result 1338 states and 2215 transitions. [2022-11-20 11:45:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:45:13,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-11-20 11:45:13,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:13,277 INFO L225 Difference]: With dead ends: 1338 [2022-11-20 11:45:13,277 INFO L226 Difference]: Without dead ends: 835 [2022-11-20 11:45:13,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:45:13,280 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1920 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 3196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:13,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2001 Valid, 1790 Invalid, 3196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [560 Valid, 2636 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-20 11:45:13,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-11-20 11:45:13,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 565. [2022-11-20 11:45:13,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6244343891402715) internal successors, (718), 463 states have internal predecessors, (718), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-11-20 11:45:13,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 909 transitions. [2022-11-20 11:45:13,436 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 909 transitions. Word has length 112 [2022-11-20 11:45:13,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:13,437 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 909 transitions. [2022-11-20 11:45:13,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:45:13,437 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 909 transitions. [2022-11-20 11:45:13,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:45:13,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:13,441 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:13,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:45:13,441 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:45:13,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:13,442 INFO L85 PathProgramCache]: Analyzing trace with hash 291656529, now seen corresponding path program 1 times [2022-11-20 11:45:13,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:13,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717824126] [2022-11-20 11:45:13,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:13,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:45:13,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:13,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:13,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:45:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:13,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:45:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:13,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:13,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:13,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:13,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:45:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:13,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:45:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:13,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:13,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:45:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:45:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:13,985 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:45:13,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:13,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717824126] [2022-11-20 11:45:13,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717824126] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:13,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:13,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:45:13,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500946691] [2022-11-20 11:45:13,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:13,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:45:13,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:13,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:45:13,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:45:13,988 INFO L87 Difference]: Start difference. First operand 565 states and 909 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:45:22,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:22,779 INFO L93 Difference]: Finished difference Result 1351 states and 2225 transitions. [2022-11-20 11:45:22,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:45:22,779 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 113 [2022-11-20 11:45:22,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:22,783 INFO L225 Difference]: With dead ends: 1351 [2022-11-20 11:45:22,783 INFO L226 Difference]: Without dead ends: 860 [2022-11-20 11:45:22,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:45:22,786 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1043 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 5257 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 3301 SdHoareTripleChecker+Invalid, 5525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 5257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:22,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1125 Valid, 3301 Invalid, 5525 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [268 Valid, 5257 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 11:45:22,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-11-20 11:45:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 568. [2022-11-20 11:45:22,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 445 states have (on average 1.6179775280898876) internal successors, (720), 466 states have internal predecessors, (720), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-11-20 11:45:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 911 transitions. [2022-11-20 11:45:22,988 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 911 transitions. Word has length 113 [2022-11-20 11:45:22,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:22,989 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 911 transitions. [2022-11-20 11:45:22,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:45:22,989 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 911 transitions. [2022-11-20 11:45:22,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-20 11:45:22,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:22,992 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:22,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:45:22,993 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:45:22,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:22,993 INFO L85 PathProgramCache]: Analyzing trace with hash 507376243, now seen corresponding path program 1 times [2022-11-20 11:45:22,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:22,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015530826] [2022-11-20 11:45:22,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:22,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:45:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:23,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:45:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:45:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:45:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:45:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:23,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:45:23,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:45:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:23,472 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:45:23,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:23,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015530826] [2022-11-20 11:45:23,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015530826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:23,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:23,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:45:23,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310506795] [2022-11-20 11:45:23,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:23,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:45:23,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:23,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:45:23,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:45:23,474 INFO L87 Difference]: Start difference. First operand 568 states and 911 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:45:29,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:29,677 INFO L93 Difference]: Finished difference Result 1347 states and 2216 transitions. [2022-11-20 11:45:29,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:45:29,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-11-20 11:45:29,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:29,698 INFO L225 Difference]: With dead ends: 1347 [2022-11-20 11:45:29,699 INFO L226 Difference]: Without dead ends: 841 [2022-11-20 11:45:29,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:45:29,702 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1482 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 2685 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1563 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 3101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 2685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:29,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1563 Valid, 1814 Invalid, 3101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 2685 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-20 11:45:29,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-11-20 11:45:29,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 568. [2022-11-20 11:45:29,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 445 states have (on average 1.6067415730337078) internal successors, (715), 466 states have internal predecessors, (715), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-11-20 11:45:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 906 transitions. [2022-11-20 11:45:29,855 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 906 transitions. Word has length 113 [2022-11-20 11:45:29,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:29,856 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 906 transitions. [2022-11-20 11:45:29,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:45:29,856 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 906 transitions. [2022-11-20 11:45:29,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 11:45:29,860 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:29,860 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:29,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:45:29,860 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:45:29,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:29,861 INFO L85 PathProgramCache]: Analyzing trace with hash -158102651, now seen corresponding path program 1 times [2022-11-20 11:45:29,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:29,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719062] [2022-11-20 11:45:29,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:29,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:45:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:45:30,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 11:45:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:30,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:45:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:45:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:45:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:45:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:30,419 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:45:30,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:30,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719062] [2022-11-20 11:45:30,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719062] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:30,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:30,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:45:30,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835767929] [2022-11-20 11:45:30,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:30,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:45:30,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:30,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:45:30,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:45:30,422 INFO L87 Difference]: Start difference. First operand 568 states and 906 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:45:39,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:39,005 INFO L93 Difference]: Finished difference Result 1357 states and 2222 transitions. [2022-11-20 11:45:39,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:45:39,006 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2022-11-20 11:45:39,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:39,010 INFO L225 Difference]: With dead ends: 1357 [2022-11-20 11:45:39,010 INFO L226 Difference]: Without dead ends: 866 [2022-11-20 11:45:39,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:45:39,012 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1462 mSDsluCounter, 2788 mSDsCounter, 0 mSdLazyCounter, 5127 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1544 SdHoareTripleChecker+Valid, 3277 SdHoareTripleChecker+Invalid, 5552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 5127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:39,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1544 Valid, 3277 Invalid, 5552 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [425 Valid, 5127 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-20 11:45:39,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-11-20 11:45:39,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 572. [2022-11-20 11:45:39,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 449 states have (on average 1.599109131403118) internal successors, (718), 470 states have internal predecessors, (718), 97 states have call successors, (97), 24 states have call predecessors, (97), 25 states have return successors, (94), 90 states have call predecessors, (94), 92 states have call successors, (94) [2022-11-20 11:45:39,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 909 transitions. [2022-11-20 11:45:39,207 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 909 transitions. Word has length 114 [2022-11-20 11:45:39,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:39,207 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 909 transitions. [2022-11-20 11:45:39,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:45:39,208 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 909 transitions. [2022-11-20 11:45:39,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-20 11:45:39,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:39,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:39,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:45:39,212 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:45:39,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:39,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1591319195, now seen corresponding path program 1 times [2022-11-20 11:45:39,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:39,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419470473] [2022-11-20 11:45:39,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:39,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:39,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:39,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:45:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:39,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:39,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:45:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:39,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 11:45:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:39,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:39,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:39,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:39,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:39,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:45:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:39,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:45:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:39,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:39,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:39,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:45:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:39,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:45:39,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:39,704 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:45:39,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:39,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419470473] [2022-11-20 11:45:39,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419470473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:39,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:39,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:45:39,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154577954] [2022-11-20 11:45:39,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:39,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:45:39,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:39,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:45:39,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:45:39,707 INFO L87 Difference]: Start difference. First operand 572 states and 909 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:45:46,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:46,712 INFO L93 Difference]: Finished difference Result 1395 states and 2261 transitions. [2022-11-20 11:45:46,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:45:46,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-11-20 11:45:46,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:46,716 INFO L225 Difference]: With dead ends: 1395 [2022-11-20 11:45:46,716 INFO L226 Difference]: Without dead ends: 821 [2022-11-20 11:45:46,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:45:46,718 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 935 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 2902 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1016 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 3160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2902 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:46,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1016 Valid, 1884 Invalid, 3160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2902 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 11:45:46,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-11-20 11:45:46,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 553. [2022-11-20 11:45:46,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 433 states have (on average 1.6073903002309469) internal successors, (696), 452 states have internal predecessors, (696), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:45:46,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 883 transitions. [2022-11-20 11:45:46,892 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 883 transitions. Word has length 114 [2022-11-20 11:45:46,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:46,893 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 883 transitions. [2022-11-20 11:45:46,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-20 11:45:46,893 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 883 transitions. [2022-11-20 11:45:46,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-20 11:45:46,895 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:46,896 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:46,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:45:46,896 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:45:46,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:46,897 INFO L85 PathProgramCache]: Analyzing trace with hash -51078506, now seen corresponding path program 1 times [2022-11-20 11:45:46,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:46,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683422523] [2022-11-20 11:45:46,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:46,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:47,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:45:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:47,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:47,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:45:47,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:47,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:45:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:47,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:47,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:47,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:47,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:47,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:45:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:45:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:47,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:47,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:47,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:45:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:47,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:45:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:45:47,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:47,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683422523] [2022-11-20 11:45:47,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683422523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:47,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:47,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:45:47,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981216567] [2022-11-20 11:45:47,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:47,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:45:47,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:47,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:45:47,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:45:47,448 INFO L87 Difference]: Start difference. First operand 553 states and 883 transitions. Second operand has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:45:55,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:45:55,389 INFO L93 Difference]: Finished difference Result 1330 states and 2176 transitions. [2022-11-20 11:45:55,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:45:55,390 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 115 [2022-11-20 11:45:55,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:45:55,394 INFO L225 Difference]: With dead ends: 1330 [2022-11-20 11:45:55,394 INFO L226 Difference]: Without dead ends: 842 [2022-11-20 11:45:55,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:45:55,397 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1852 mSDsluCounter, 2752 mSDsCounter, 0 mSdLazyCounter, 4881 mSolverCounterSat, 565 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1933 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 5446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 565 IncrementalHoareTripleChecker+Valid, 4881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:45:55,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1933 Valid, 3245 Invalid, 5446 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [565 Valid, 4881 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 11:45:55,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-11-20 11:45:55,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 558. [2022-11-20 11:45:55,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 438 states have (on average 1.6004566210045663) internal successors, (701), 457 states have internal predecessors, (701), 96 states have call successors, (96), 24 states have call predecessors, (96), 23 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-20 11:45:55,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 888 transitions. [2022-11-20 11:45:55,556 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 888 transitions. Word has length 115 [2022-11-20 11:45:55,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:45:55,557 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 888 transitions. [2022-11-20 11:45:55,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.88888888888889) internal successors, (80), 6 states have internal predecessors, (80), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:45:55,557 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 888 transitions. [2022-11-20 11:45:55,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-20 11:45:55,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:45:55,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:45:55,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:45:55,560 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:45:55,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:45:55,561 INFO L85 PathProgramCache]: Analyzing trace with hash -103270278, now seen corresponding path program 1 times [2022-11-20 11:45:55,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:45:55,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393462491] [2022-11-20 11:45:55,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:45:55,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:45:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:55,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:45:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:55,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:55,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:55,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:45:55,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:55,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:45:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:56,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:56,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:56,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:56,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-20 11:45:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:56,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 11:45:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:56,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:56,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:56,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:45:56,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:56,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:45:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:56,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:45:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:45:56,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:45:56,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:45:56,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393462491] [2022-11-20 11:45:56,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393462491] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:45:56,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:45:56,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:45:56,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989080375] [2022-11-20 11:45:56,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:45:56,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:45:56,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:45:56,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:45:56,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:45:56,368 INFO L87 Difference]: Start difference. First operand 558 states and 888 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 11:46:10,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:46:10,192 INFO L93 Difference]: Finished difference Result 1583 states and 2703 transitions. [2022-11-20 11:46:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:46:10,193 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 116 [2022-11-20 11:46:10,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:46:10,198 INFO L225 Difference]: With dead ends: 1583 [2022-11-20 11:46:10,199 INFO L226 Difference]: Without dead ends: 1103 [2022-11-20 11:46:10,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:46:10,203 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 3944 mSDsluCounter, 3477 mSDsCounter, 0 mSdLazyCounter, 9963 mSolverCounterSat, 1968 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3944 SdHoareTripleChecker+Valid, 4059 SdHoareTripleChecker+Invalid, 11931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1968 IncrementalHoareTripleChecker+Valid, 9963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:46:10,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3944 Valid, 4059 Invalid, 11931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1968 Valid, 9963 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-11-20 11:46:10,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2022-11-20 11:46:10,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 567. [2022-11-20 11:46:10,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 445 states have (on average 1.5910112359550561) internal successors, (708), 463 states have internal predecessors, (708), 96 states have call successors, (96), 24 states have call predecessors, (96), 25 states have return successors, (110), 92 states have call predecessors, (110), 91 states have call successors, (110) [2022-11-20 11:46:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 914 transitions. [2022-11-20 11:46:10,420 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 914 transitions. Word has length 116 [2022-11-20 11:46:10,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:46:10,421 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 914 transitions. [2022-11-20 11:46:10,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 11:46:10,421 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 914 transitions. [2022-11-20 11:46:10,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-20 11:46:10,424 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:46:10,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:10,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:46:10,424 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:46:10,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:10,425 INFO L85 PathProgramCache]: Analyzing trace with hash 243649490, now seen corresponding path program 1 times [2022-11-20 11:46:10,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:10,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645297262] [2022-11-20 11:46:10,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:10,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:10,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:46:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:10,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:10,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:46:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:10,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:46:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:10,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:11,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:11,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:11,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:11,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:46:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:11,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:46:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:11,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:11,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:11,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:46:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:11,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-20 11:46:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:46:11,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:11,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645297262] [2022-11-20 11:46:11,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645297262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:11,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:11,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:46:11,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493762596] [2022-11-20 11:46:11,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:11,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:46:11,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:11,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:46:11,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:46:11,237 INFO L87 Difference]: Start difference. First operand 567 states and 914 transitions. Second operand has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 9 states have internal predecessors, (82), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 11:46:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:46:40,733 INFO L93 Difference]: Finished difference Result 2553 states and 4531 transitions. [2022-11-20 11:46:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:46:40,733 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 9 states have internal predecessors, (82), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 118 [2022-11-20 11:46:40,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:46:40,752 INFO L225 Difference]: With dead ends: 2553 [2022-11-20 11:46:40,753 INFO L226 Difference]: Without dead ends: 2064 [2022-11-20 11:46:40,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 11:46:40,759 INFO L413 NwaCegarLoop]: 1221 mSDtfsCounter, 6555 mSDsluCounter, 7850 mSDsCounter, 0 mSdLazyCounter, 20264 mSolverCounterSat, 3305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6555 SdHoareTripleChecker+Valid, 9071 SdHoareTripleChecker+Invalid, 23569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3305 IncrementalHoareTripleChecker+Valid, 20264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:46:40,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6555 Valid, 9071 Invalid, 23569 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3305 Valid, 20264 Invalid, 0 Unknown, 0 Unchecked, 23.3s Time] [2022-11-20 11:46:40,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2064 states. [2022-11-20 11:46:41,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2064 to 1348. [2022-11-20 11:46:41,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 986 states have (on average 1.6004056795131847) internal successors, (1578), 1043 states have internal predecessors, (1578), 305 states have call successors, (305), 44 states have call predecessors, (305), 56 states have return successors, (410), 308 states have call predecessors, (410), 300 states have call successors, (410) [2022-11-20 11:46:41,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 2293 transitions. [2022-11-20 11:46:41,385 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 2293 transitions. Word has length 118 [2022-11-20 11:46:41,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:46:41,385 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 2293 transitions. [2022-11-20 11:46:41,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 9 states have internal predecessors, (82), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 11:46:41,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 2293 transitions. [2022-11-20 11:46:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-20 11:46:41,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:46:41,391 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:41,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:46:41,392 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:46:41,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:41,392 INFO L85 PathProgramCache]: Analyzing trace with hash -790027358, now seen corresponding path program 1 times [2022-11-20 11:46:41,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:41,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381288078] [2022-11-20 11:46:41,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:41,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:41,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:46:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:41,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:41,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:46:41,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:41,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:46:41,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:41,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:41,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:41,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:41,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-20 11:46:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:41,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:46:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:42,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:42,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:42,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:42,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:46:42,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:42,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-20 11:46:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-20 11:46:42,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:42,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381288078] [2022-11-20 11:46:42,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381288078] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:46:42,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51657477] [2022-11-20 11:46:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:42,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:42,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:46:42,137 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:46:42,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:46:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:42,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1449 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:46:42,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:46:42,783 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 11:46:42,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:46:42,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51657477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:42,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:46:42,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-11-20 11:46:42,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413713473] [2022-11-20 11:46:42,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:42,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:46:42,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:42,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:46:42,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:46:42,787 INFO L87 Difference]: Start difference. First operand 1348 states and 2293 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:46:44,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:46:44,457 INFO L93 Difference]: Finished difference Result 2623 states and 4546 transitions. [2022-11-20 11:46:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:46:44,458 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-11-20 11:46:44,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:46:44,467 INFO L225 Difference]: With dead ends: 2623 [2022-11-20 11:46:44,467 INFO L226 Difference]: Without dead ends: 1361 [2022-11-20 11:46:44,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:46:44,477 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 817 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:46:44,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 2193 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:46:44,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2022-11-20 11:46:44,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 577. [2022-11-20 11:46:44,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 453 states have (on average 1.5916114790286975) internal successors, (721), 472 states have internal predecessors, (721), 96 states have call successors, (96), 25 states have call predecessors, (96), 27 states have return successors, (111), 92 states have call predecessors, (111), 91 states have call successors, (111) [2022-11-20 11:46:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 928 transitions. [2022-11-20 11:46:44,892 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 928 transitions. Word has length 117 [2022-11-20 11:46:44,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:46:44,893 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 928 transitions. [2022-11-20 11:46:44,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:46:44,893 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 928 transitions. [2022-11-20 11:46:44,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-20 11:46:44,896 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:46:44,897 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:46:44,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:46:45,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:46:45,106 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:46:45,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:46:45,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1893765370, now seen corresponding path program 1 times [2022-11-20 11:46:45,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:46:45,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383069740] [2022-11-20 11:46:45,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:46:45,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:46:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:45,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:46:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:45,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:45,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:45,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:46:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:46:45,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:45,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:45,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:45,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:45,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:46:45,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:45,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:46:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:45,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:45,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:46:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:45,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 11:46:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:45,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 11:46:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:46:45,984 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 11:46:45,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:46:45,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383069740] [2022-11-20 11:46:45,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383069740] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:46:45,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:46:45,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:46:45,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083938154] [2022-11-20 11:46:45,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:46:45,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:46:45,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:46:45,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:46:45,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:46:45,987 INFO L87 Difference]: Start difference. First operand 577 states and 928 transitions. Second operand has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 11:47:15,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:15,524 INFO L93 Difference]: Finished difference Result 2580 states and 4547 transitions. [2022-11-20 11:47:15,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:47:15,525 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 120 [2022-11-20 11:47:15,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:15,540 INFO L225 Difference]: With dead ends: 2580 [2022-11-20 11:47:15,540 INFO L226 Difference]: Without dead ends: 2081 [2022-11-20 11:47:15,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 11:47:15,546 INFO L413 NwaCegarLoop]: 1244 mSDtfsCounter, 5704 mSDsluCounter, 8174 mSDsCounter, 0 mSdLazyCounter, 20045 mSolverCounterSat, 3084 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5704 SdHoareTripleChecker+Valid, 9418 SdHoareTripleChecker+Invalid, 23129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3084 IncrementalHoareTripleChecker+Valid, 20045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:15,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5704 Valid, 9418 Invalid, 23129 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3084 Valid, 20045 Invalid, 0 Unknown, 0 Unchecked, 23.0s Time] [2022-11-20 11:47:15,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2081 states. [2022-11-20 11:47:16,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2081 to 1368. [2022-11-20 11:47:16,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1002 states have (on average 1.6007984031936129) internal successors, (1604), 1061 states have internal predecessors, (1604), 305 states have call successors, (305), 46 states have call predecessors, (305), 60 states have return successors, (406), 308 states have call predecessors, (406), 300 states have call successors, (406) [2022-11-20 11:47:16,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 2315 transitions. [2022-11-20 11:47:16,368 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 2315 transitions. Word has length 120 [2022-11-20 11:47:16,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:16,368 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 2315 transitions. [2022-11-20 11:47:16,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 11:47:16,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 2315 transitions. [2022-11-20 11:47:16,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 11:47:16,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:16,372 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:16,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:47:16,372 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:16,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:16,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1197558838, now seen corresponding path program 1 times [2022-11-20 11:47:16,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:16,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864462968] [2022-11-20 11:47:16,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:16,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:16,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:47:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:16,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:16,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:47:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:16,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:47:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:16,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:16,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:16,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:17,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:17,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:17,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:47:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:17,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:47:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:17,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:17,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:17,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:47:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:47:17,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:17,148 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:47:17,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:17,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864462968] [2022-11-20 11:47:17,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864462968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:17,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:17,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-20 11:47:17,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641317454] [2022-11-20 11:47:17,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:17,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:47:17,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:17,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:47:17,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:47:17,153 INFO L87 Difference]: Start difference. First operand 1368 states and 2315 transitions. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 9 states have internal predecessors, (84), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 11:47:46,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:46,455 INFO L93 Difference]: Finished difference Result 5409 states and 10057 transitions. [2022-11-20 11:47:46,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:47:46,456 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 9 states have internal predecessors, (84), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 122 [2022-11-20 11:47:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:46,482 INFO L225 Difference]: With dead ends: 5409 [2022-11-20 11:47:46,482 INFO L226 Difference]: Without dead ends: 4127 [2022-11-20 11:47:46,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 11:47:46,493 INFO L413 NwaCegarLoop]: 1247 mSDtfsCounter, 6522 mSDsluCounter, 7977 mSDsCounter, 0 mSdLazyCounter, 20051 mSolverCounterSat, 3322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6522 SdHoareTripleChecker+Valid, 9224 SdHoareTripleChecker+Invalid, 23373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3322 IncrementalHoareTripleChecker+Valid, 20051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:46,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6522 Valid, 9224 Invalid, 23373 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3322 Valid, 20051 Invalid, 0 Unknown, 0 Unchecked, 21.0s Time] [2022-11-20 11:47:46,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4127 states. [2022-11-20 11:47:48,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4127 to 2531. [2022-11-20 11:47:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2531 states, 1743 states have (on average 1.5897877223178427) internal successors, (2771), 1873 states have internal predecessors, (2771), 691 states have call successors, (691), 67 states have call predecessors, (691), 96 states have return successors, (1044), 705 states have call predecessors, (1044), 686 states have call successors, (1044) [2022-11-20 11:47:48,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2531 states to 2531 states and 4506 transitions. [2022-11-20 11:47:48,313 INFO L78 Accepts]: Start accepts. Automaton has 2531 states and 4506 transitions. Word has length 122 [2022-11-20 11:47:48,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:48,313 INFO L495 AbstractCegarLoop]: Abstraction has 2531 states and 4506 transitions. [2022-11-20 11:47:48,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 9 states have internal predecessors, (84), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-20 11:47:48,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2531 states and 4506 transitions. [2022-11-20 11:47:48,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-20 11:47:48,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:48,323 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:48,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:47:48,323 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:48,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:48,324 INFO L85 PathProgramCache]: Analyzing trace with hash -744074498, now seen corresponding path program 1 times [2022-11-20 11:47:48,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:48,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612271909] [2022-11-20 11:47:48,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:48,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:48,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:47:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:48,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:48,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:47:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:48,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:47:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:49,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:49,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:49,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:49,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:47:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:49,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 11:47:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:49,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:49,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:49,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:47:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:49,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:47:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:47:49,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:49,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612271909] [2022-11-20 11:47:49,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612271909] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:47:49,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662837384] [2022-11-20 11:47:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:49,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:49,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:47:49,221 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:47:49,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:47:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:49,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 1454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:47:49,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:47:49,722 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:47:49,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:47:49,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662837384] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:49,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:47:49,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-11-20 11:47:49,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990932] [2022-11-20 11:47:49,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:49,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:47:49,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:49,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:47:49,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:47:49,725 INFO L87 Difference]: Start difference. First operand 2531 states and 4506 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:47:51,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:47:51,926 INFO L93 Difference]: Finished difference Result 4993 states and 8989 transitions. [2022-11-20 11:47:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:47:51,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-11-20 11:47:51,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:47:51,946 INFO L225 Difference]: With dead ends: 4993 [2022-11-20 11:47:51,946 INFO L226 Difference]: Without dead ends: 2556 [2022-11-20 11:47:51,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:47:51,964 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 807 mSDsluCounter, 1347 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:47:51,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 2193 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:47:51,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2022-11-20 11:47:53,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2552. [2022-11-20 11:47:53,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 1760 states have (on average 1.5926136363636363) internal successors, (2803), 1894 states have internal predecessors, (2803), 691 states have call successors, (691), 70 states have call predecessors, (691), 100 states have return successors, (1031), 702 states have call predecessors, (1031), 686 states have call successors, (1031) [2022-11-20 11:47:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 4525 transitions. [2022-11-20 11:47:53,674 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 4525 transitions. Word has length 122 [2022-11-20 11:47:53,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:47:53,675 INFO L495 AbstractCegarLoop]: Abstraction has 2552 states and 4525 transitions. [2022-11-20 11:47:53,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:47:53,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 4525 transitions. [2022-11-20 11:47:53,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:47:53,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:47:53,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:47:53,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:47:53,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:47:53,882 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:47:53,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:47:53,882 INFO L85 PathProgramCache]: Analyzing trace with hash 706267002, now seen corresponding path program 1 times [2022-11-20 11:47:53,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:47:53,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590036939] [2022-11-20 11:47:53,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:47:53,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:47:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:54,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:47:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:54,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:47:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:54,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:47:54,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:54,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:54,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:54,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:54,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:47:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:54,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 11:47:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:54,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:54,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:47:54,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:54,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 11:47:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:54,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 11:47:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:47:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:47:54,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:47:54,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590036939] [2022-11-20 11:47:54,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590036939] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:47:54,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:47:54,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-20 11:47:54,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315862873] [2022-11-20 11:47:54,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:47:54,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:47:54,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:47:54,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:47:54,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:47:54,877 INFO L87 Difference]: Start difference. First operand 2552 states and 4525 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-20 11:48:27,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:27,458 INFO L93 Difference]: Finished difference Result 7574 states and 14146 transitions. [2022-11-20 11:48:27,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-20 11:48:27,458 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) Word has length 124 [2022-11-20 11:48:27,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:27,492 INFO L225 Difference]: With dead ends: 7574 [2022-11-20 11:48:27,493 INFO L226 Difference]: Without dead ends: 5116 [2022-11-20 11:48:27,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=418, Invalid=1838, Unknown=0, NotChecked=0, Total=2256 [2022-11-20 11:48:27,520 INFO L413 NwaCegarLoop]: 1407 mSDtfsCounter, 6785 mSDsluCounter, 9019 mSDsCounter, 0 mSdLazyCounter, 21495 mSolverCounterSat, 3668 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6791 SdHoareTripleChecker+Valid, 10426 SdHoareTripleChecker+Invalid, 25163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3668 IncrementalHoareTripleChecker+Valid, 21495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:27,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6791 Valid, 10426 Invalid, 25163 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3668 Valid, 21495 Invalid, 0 Unknown, 0 Unchecked, 23.1s Time] [2022-11-20 11:48:27,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5116 states. [2022-11-20 11:48:29,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5116 to 2836. [2022-11-20 11:48:29,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2836 states, 2073 states have (on average 1.6145682585624699) internal successors, (3347), 2183 states have internal predecessors, (3347), 635 states have call successors, (635), 92 states have call predecessors, (635), 127 states have return successors, (980), 647 states have call predecessors, (980), 630 states have call successors, (980) [2022-11-20 11:48:29,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 4962 transitions. [2022-11-20 11:48:29,424 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 4962 transitions. Word has length 124 [2022-11-20 11:48:29,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:29,424 INFO L495 AbstractCegarLoop]: Abstraction has 2836 states and 4962 transitions. [2022-11-20 11:48:29,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-20 11:48:29,425 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 4962 transitions. [2022-11-20 11:48:29,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 11:48:29,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:29,430 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:29,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 11:48:29,430 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:29,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:29,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1283387646, now seen corresponding path program 1 times [2022-11-20 11:48:29,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:29,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89802093] [2022-11-20 11:48:29,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:29,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:29,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:48:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:29,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:29,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:48:29,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:29,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:48:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:29,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:29,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:29,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:29,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:29,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:48:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:29,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 11:48:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:29,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:29,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:29,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:29,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:48:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:29,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 11:48:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:29,978 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:48:29,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:29,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89802093] [2022-11-20 11:48:29,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89802093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:29,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:29,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:48:29,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874670591] [2022-11-20 11:48:29,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:29,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:48:29,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:29,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:48:29,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:48:29,981 INFO L87 Difference]: Start difference. First operand 2836 states and 4962 transitions. Second operand has 10 states, 9 states have (on average 9.555555555555555) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:48:40,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:40,242 INFO L93 Difference]: Finished difference Result 5314 states and 9467 transitions. [2022-11-20 11:48:40,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:48:40,243 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.555555555555555) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 123 [2022-11-20 11:48:40,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:40,265 INFO L225 Difference]: With dead ends: 5314 [2022-11-20 11:48:40,265 INFO L226 Difference]: Without dead ends: 3883 [2022-11-20 11:48:40,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:48:40,271 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 1409 mSDsluCounter, 2890 mSDsCounter, 0 mSdLazyCounter, 4952 mSolverCounterSat, 400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 3400 SdHoareTripleChecker+Invalid, 5352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 400 IncrementalHoareTripleChecker+Valid, 4952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:40,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 3400 Invalid, 5352 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [400 Valid, 4952 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-20 11:48:40,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3883 states. [2022-11-20 11:48:42,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3883 to 2842. [2022-11-20 11:48:42,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2842 states, 2079 states have (on average 1.612794612794613) internal successors, (3353), 2189 states have internal predecessors, (3353), 635 states have call successors, (635), 92 states have call predecessors, (635), 127 states have return successors, (980), 647 states have call predecessors, (980), 630 states have call successors, (980) [2022-11-20 11:48:42,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2842 states to 2842 states and 4968 transitions. [2022-11-20 11:48:42,080 INFO L78 Accepts]: Start accepts. Automaton has 2842 states and 4968 transitions. Word has length 123 [2022-11-20 11:48:42,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:42,080 INFO L495 AbstractCegarLoop]: Abstraction has 2842 states and 4968 transitions. [2022-11-20 11:48:42,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.555555555555555) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:48:42,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2842 states and 4968 transitions. [2022-11-20 11:48:42,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 11:48:42,085 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:42,085 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:42,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 11:48:42,086 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:42,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:42,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1733503299, now seen corresponding path program 1 times [2022-11-20 11:48:42,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:42,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500442159] [2022-11-20 11:48:42,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:42,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:42,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:42,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:48:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:42,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:42,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:48:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:42,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:48:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:42,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:42,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:42,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:48:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:42,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:48:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:42,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:42,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:42,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:42,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:48:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:42,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 11:48:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-20 11:48:42,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:42,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500442159] [2022-11-20 11:48:42,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500442159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:42,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:42,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:48:42,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904427394] [2022-11-20 11:48:42,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:42,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:48:42,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:42,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:48:42,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:48:42,625 INFO L87 Difference]: Start difference. First operand 2842 states and 4968 transitions. Second operand has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:48:50,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:48:50,881 INFO L93 Difference]: Finished difference Result 4087 states and 7234 transitions. [2022-11-20 11:48:50,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:48:50,882 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 127 [2022-11-20 11:48:50,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:48:50,889 INFO L225 Difference]: With dead ends: 4087 [2022-11-20 11:48:50,889 INFO L226 Difference]: Without dead ends: 1259 [2022-11-20 11:48:50,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:48:50,900 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1861 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 4808 mSolverCounterSat, 556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1939 SdHoareTripleChecker+Valid, 3130 SdHoareTripleChecker+Invalid, 5364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 556 IncrementalHoareTripleChecker+Valid, 4808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:48:50,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1939 Valid, 3130 Invalid, 5364 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [556 Valid, 4808 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-20 11:48:50,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2022-11-20 11:48:51,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 538. [2022-11-20 11:48:51,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 417 states have (on average 1.6235011990407673) internal successors, (677), 438 states have internal predecessors, (677), 93 states have call successors, (93), 26 states have call predecessors, (93), 27 states have return successors, (99), 86 states have call predecessors, (99), 88 states have call successors, (99) [2022-11-20 11:48:51,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 869 transitions. [2022-11-20 11:48:51,211 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 869 transitions. Word has length 127 [2022-11-20 11:48:51,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:48:51,211 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 869 transitions. [2022-11-20 11:48:51,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:48:51,212 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 869 transitions. [2022-11-20 11:48:51,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-20 11:48:51,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:48:51,213 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:48:51,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 11:48:51,213 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:48:51,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:48:51,214 INFO L85 PathProgramCache]: Analyzing trace with hash 215493586, now seen corresponding path program 1 times [2022-11-20 11:48:51,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:48:51,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855147893] [2022-11-20 11:48:51,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:48:51,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:48:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:51,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:48:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:51,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:51,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:51,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:48:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:51,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:48:51,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:51,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:51,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:51,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:51,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:48:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:51,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:51,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-20 11:48:51,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:51,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:51,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:48:51,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:51,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-20 11:48:51,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:51,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 11:48:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:48:51,792 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:48:51,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:48:51,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855147893] [2022-11-20 11:48:51,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855147893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:48:51,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:48:51,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:48:51,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056236080] [2022-11-20 11:48:51,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:48:51,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:48:51,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:48:51,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:48:51,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:48:51,794 INFO L87 Difference]: Start difference. First operand 538 states and 869 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:49:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:49:02,013 INFO L93 Difference]: Finished difference Result 1498 states and 2543 transitions. [2022-11-20 11:49:02,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:49:02,014 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 128 [2022-11-20 11:49:02,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:49:02,019 INFO L225 Difference]: With dead ends: 1498 [2022-11-20 11:49:02,020 INFO L226 Difference]: Without dead ends: 1005 [2022-11-20 11:49:02,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:49:02,023 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 2997 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 4476 mSolverCounterSat, 1534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3008 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 6010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1534 IncrementalHoareTripleChecker+Valid, 4476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:49:02,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3008 Valid, 2705 Invalid, 6010 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1534 Valid, 4476 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-20 11:49:02,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005 states. [2022-11-20 11:49:02,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005 to 543. [2022-11-20 11:49:02,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 421 states have (on average 1.6175771971496438) internal successors, (681), 442 states have internal predecessors, (681), 93 states have call successors, (93), 26 states have call predecessors, (93), 28 states have return successors, (100), 87 states have call predecessors, (100), 88 states have call successors, (100) [2022-11-20 11:49:02,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 874 transitions. [2022-11-20 11:49:02,427 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 874 transitions. Word has length 128 [2022-11-20 11:49:02,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:49:02,427 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 874 transitions. [2022-11-20 11:49:02,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:49:02,428 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 874 transitions. [2022-11-20 11:49:02,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-20 11:49:02,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:49:02,430 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:02,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-20 11:49:02,431 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:49:02,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:02,431 INFO L85 PathProgramCache]: Analyzing trace with hash -665721627, now seen corresponding path program 1 times [2022-11-20 11:49:02,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:02,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93488044] [2022-11-20 11:49:02,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:02,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:02,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:02,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:49:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:02,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:02,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:49:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:02,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:49:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:02,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:02,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:49:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:02,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:02,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:49:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:03,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:03,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:03,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:03,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 11:49:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:03,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 11:49:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:49:03,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:03,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93488044] [2022-11-20 11:49:03,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93488044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:03,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:03,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:49:03,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002939901] [2022-11-20 11:49:03,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:03,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:49:03,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:03,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:49:03,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:49:03,042 INFO L87 Difference]: Start difference. First operand 543 states and 874 transitions. Second operand has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:49:11,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:49:11,715 INFO L93 Difference]: Finished difference Result 1340 states and 2234 transitions. [2022-11-20 11:49:11,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:49:11,716 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 131 [2022-11-20 11:49:11,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:49:11,720 INFO L225 Difference]: With dead ends: 1340 [2022-11-20 11:49:11,720 INFO L226 Difference]: Without dead ends: 842 [2022-11-20 11:49:11,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:49:11,722 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 2123 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 4130 mSolverCounterSat, 809 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 4939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 809 IncrementalHoareTripleChecker+Valid, 4130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:49:11,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2133 Valid, 2984 Invalid, 4939 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [809 Valid, 4130 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-20 11:49:11,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2022-11-20 11:49:12,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 548. [2022-11-20 11:49:12,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 425 states have (on average 1.611764705882353) internal successors, (685), 446 states have internal predecessors, (685), 93 states have call successors, (93), 26 states have call predecessors, (93), 29 states have return successors, (102), 88 states have call predecessors, (102), 88 states have call successors, (102) [2022-11-20 11:49:12,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 880 transitions. [2022-11-20 11:49:12,025 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 880 transitions. Word has length 131 [2022-11-20 11:49:12,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:49:12,026 INFO L495 AbstractCegarLoop]: Abstraction has 548 states and 880 transitions. [2022-11-20 11:49:12,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.1) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-20 11:49:12,026 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 880 transitions. [2022-11-20 11:49:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-20 11:49:12,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:49:12,027 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:12,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-20 11:49:12,028 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:49:12,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:12,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2144603058, now seen corresponding path program 1 times [2022-11-20 11:49:12,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:12,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692503923] [2022-11-20 11:49:12,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:12,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:49:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:49:12,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:49:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:49:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:49:12,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:49:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 11:49:12,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,589 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 11:49:12,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:12,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692503923] [2022-11-20 11:49:12,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692503923] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:49:12,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696064090] [2022-11-20 11:49:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:12,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:49:12,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:49:12,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:49:12,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:49:12,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:12,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:49:12,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:49:12,921 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:49:12,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:49:12,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696064090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:12,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:49:12,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 10 [2022-11-20 11:49:12,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572842507] [2022-11-20 11:49:12,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:12,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:49:12,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:12,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:49:12,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:49:12,923 INFO L87 Difference]: Start difference. First operand 548 states and 880 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:49:13,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:49:13,657 INFO L93 Difference]: Finished difference Result 1512 states and 2486 transitions. [2022-11-20 11:49:13,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:49:13,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 135 [2022-11-20 11:49:13,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:49:13,662 INFO L225 Difference]: With dead ends: 1512 [2022-11-20 11:49:13,662 INFO L226 Difference]: Without dead ends: 1009 [2022-11-20 11:49:13,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 161 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:49:13,664 INFO L413 NwaCegarLoop]: 990 mSDtfsCounter, 761 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:49:13,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 1695 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:49:13,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-11-20 11:49:14,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 994. [2022-11-20 11:49:14,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 994 states, 770 states have (on average 1.6077922077922078) internal successors, (1238), 807 states have internal predecessors, (1238), 169 states have call successors, (169), 47 states have call predecessors, (169), 54 states have return successors, (200), 165 states have call predecessors, (200), 164 states have call successors, (200) [2022-11-20 11:49:14,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1607 transitions. [2022-11-20 11:49:14,147 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1607 transitions. Word has length 135 [2022-11-20 11:49:14,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:49:14,148 INFO L495 AbstractCegarLoop]: Abstraction has 994 states and 1607 transitions. [2022-11-20 11:49:14,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-20 11:49:14,148 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1607 transitions. [2022-11-20 11:49:14,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-20 11:49:14,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:49:14,151 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:14,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:49:14,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 11:49:14,358 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:49:14,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:14,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1416848048, now seen corresponding path program 1 times [2022-11-20 11:49:14,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:14,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63384044] [2022-11-20 11:49:14,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:14,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:49:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:49:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:49:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:14,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:14,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:49:14,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:49:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:49:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:49:14,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:49:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:14,868 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:49:14,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:14,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63384044] [2022-11-20 11:49:14,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63384044] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:14,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:14,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:49:14,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293488376] [2022-11-20 11:49:14,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:14,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:49:14,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:14,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:49:14,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:49:14,871 INFO L87 Difference]: Start difference. First operand 994 states and 1607 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 11:49:28,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:49:28,457 INFO L93 Difference]: Finished difference Result 3517 states and 5971 transitions. [2022-11-20 11:49:28,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:49:28,457 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 140 [2022-11-20 11:49:28,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:49:28,469 INFO L225 Difference]: With dead ends: 3517 [2022-11-20 11:49:28,470 INFO L226 Difference]: Without dead ends: 2568 [2022-11-20 11:49:28,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:49:28,474 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 3786 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 2427 mSolverCounterSat, 1512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3794 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 3939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1512 IncrementalHoareTripleChecker+Valid, 2427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:49:28,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3794 Valid, 1202 Invalid, 3939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1512 Valid, 2427 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2022-11-20 11:49:28,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2568 states. [2022-11-20 11:49:29,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2568 to 1940. [2022-11-20 11:49:29,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1498 states have (on average 1.6114819759679573) internal successors, (2414), 1566 states have internal predecessors, (2414), 336 states have call successors, (336), 89 states have call predecessors, (336), 105 states have return successors, (422), 332 states have call predecessors, (422), 331 states have call successors, (422) [2022-11-20 11:49:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 3172 transitions. [2022-11-20 11:49:29,735 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 3172 transitions. Word has length 140 [2022-11-20 11:49:29,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:49:29,736 INFO L495 AbstractCegarLoop]: Abstraction has 1940 states and 3172 transitions. [2022-11-20 11:49:29,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 11:49:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 3172 transitions. [2022-11-20 11:49:29,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-20 11:49:29,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:49:29,739 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:29,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-20 11:49:29,739 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:49:29,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:29,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1124082142, now seen corresponding path program 1 times [2022-11-20 11:49:29,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:29,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919342779] [2022-11-20 11:49:29,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:29,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:29,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:49:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:29,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:29,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:49:29,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:30,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:49:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:30,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:30,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:30,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:30,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:30,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:49:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:30,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:30,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:30,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:49:30,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:30,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:30,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:30,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:30,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:49:30,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:30,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 11:49:30,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:30,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-20 11:49:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:30,453 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-20 11:49:30,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:30,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919342779] [2022-11-20 11:49:30,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919342779] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:30,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:30,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 11:49:30,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641483096] [2022-11-20 11:49:30,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:30,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:49:30,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:30,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:49:30,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:49:30,456 INFO L87 Difference]: Start difference. First operand 1940 states and 3172 transitions. Second operand has 11 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-20 11:49:40,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:49:40,959 INFO L93 Difference]: Finished difference Result 4263 states and 7230 transitions. [2022-11-20 11:49:40,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:49:40,959 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 143 [2022-11-20 11:49:40,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:49:40,972 INFO L225 Difference]: With dead ends: 4263 [2022-11-20 11:49:40,973 INFO L226 Difference]: Without dead ends: 2551 [2022-11-20 11:49:40,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:49:40,980 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 2877 mSDsluCounter, 2341 mSDsCounter, 0 mSdLazyCounter, 3812 mSolverCounterSat, 737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2887 SdHoareTripleChecker+Valid, 2825 SdHoareTripleChecker+Invalid, 4549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 737 IncrementalHoareTripleChecker+Valid, 3812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:49:40,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2887 Valid, 2825 Invalid, 4549 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [737 Valid, 3812 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 11:49:40,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2551 states. [2022-11-20 11:49:42,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2551 to 1940. [2022-11-20 11:49:42,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1940 states, 1498 states have (on average 1.6001335113484647) internal successors, (2397), 1566 states have internal predecessors, (2397), 336 states have call successors, (336), 89 states have call predecessors, (336), 105 states have return successors, (422), 332 states have call predecessors, (422), 331 states have call successors, (422) [2022-11-20 11:49:42,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1940 states to 1940 states and 3155 transitions. [2022-11-20 11:49:42,465 INFO L78 Accepts]: Start accepts. Automaton has 1940 states and 3155 transitions. Word has length 143 [2022-11-20 11:49:42,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:49:42,465 INFO L495 AbstractCegarLoop]: Abstraction has 1940 states and 3155 transitions. [2022-11-20 11:49:42,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.1) internal successors, (101), 7 states have internal predecessors, (101), 5 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-20 11:49:42,466 INFO L276 IsEmpty]: Start isEmpty. Operand 1940 states and 3155 transitions. [2022-11-20 11:49:42,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 11:49:42,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:49:42,467 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:42,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-20 11:49:42,467 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:49:42,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:42,468 INFO L85 PathProgramCache]: Analyzing trace with hash -227194032, now seen corresponding path program 1 times [2022-11-20 11:49:42,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:42,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633488368] [2022-11-20 11:49:42,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:42,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:42,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:49:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:42,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:42,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:49:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:42,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:49:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:42,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:42,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:42,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:42,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:42,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:42,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:49:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:42,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:42,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:49:42,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:43,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:43,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:43,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:43,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:49:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:43,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:49:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:43,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:49:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:43,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 11:49:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:43,055 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-20 11:49:43,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:43,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633488368] [2022-11-20 11:49:43,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633488368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:43,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:43,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:49:43,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134542914] [2022-11-20 11:49:43,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:43,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:49:43,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:43,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:49:43,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:49:43,058 INFO L87 Difference]: Start difference. First operand 1940 states and 3155 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 11:49:51,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:49:51,645 INFO L93 Difference]: Finished difference Result 4461 states and 7555 transitions. [2022-11-20 11:49:51,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:49:51,646 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 147 [2022-11-20 11:49:51,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:49:51,661 INFO L225 Difference]: With dead ends: 4461 [2022-11-20 11:49:51,662 INFO L226 Difference]: Without dead ends: 2567 [2022-11-20 11:49:51,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:49:51,668 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 2042 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 2580 mSolverCounterSat, 770 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2052 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 3350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 770 IncrementalHoareTripleChecker+Valid, 2580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:49:51,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2052 Valid, 1785 Invalid, 3350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [770 Valid, 2580 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 11:49:51,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2022-11-20 11:49:53,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 1956. [2022-11-20 11:49:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1956 states, 1510 states have (on average 1.595364238410596) internal successors, (2409), 1578 states have internal predecessors, (2409), 336 states have call successors, (336), 93 states have call predecessors, (336), 109 states have return successors, (420), 332 states have call predecessors, (420), 331 states have call successors, (420) [2022-11-20 11:49:53,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1956 states to 1956 states and 3165 transitions. [2022-11-20 11:49:53,365 INFO L78 Accepts]: Start accepts. Automaton has 1956 states and 3165 transitions. Word has length 147 [2022-11-20 11:49:53,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:49:53,366 INFO L495 AbstractCegarLoop]: Abstraction has 1956 states and 3165 transitions. [2022-11-20 11:49:53,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-20 11:49:53,366 INFO L276 IsEmpty]: Start isEmpty. Operand 1956 states and 3165 transitions. [2022-11-20 11:49:53,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-20 11:49:53,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:49:53,369 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:49:53,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-20 11:49:53,370 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:49:53,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:49:53,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1817295282, now seen corresponding path program 1 times [2022-11-20 11:49:53,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:49:53,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189662264] [2022-11-20 11:49:53,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:49:53,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:49:53,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:49:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:49:53,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:49:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:49:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:49:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:49:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:49:53,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:49:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:49:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:53,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:49:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:49:54,000 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 11:49:54,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:49:54,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189662264] [2022-11-20 11:49:54,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189662264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:49:54,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:49:54,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-20 11:49:54,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702997043] [2022-11-20 11:49:54,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:49:54,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:49:54,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:49:54,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:49:54,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:49:54,003 INFO L87 Difference]: Start difference. First operand 1956 states and 3165 transitions. Second operand has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 9 states have internal predecessors, (101), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-20 11:50:13,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:50:13,566 INFO L93 Difference]: Finished difference Result 5220 states and 8823 transitions. [2022-11-20 11:50:13,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 11:50:13,567 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 9 states have internal predecessors, (101), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 148 [2022-11-20 11:50:13,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:50:13,581 INFO L225 Difference]: With dead ends: 5220 [2022-11-20 11:50:13,581 INFO L226 Difference]: Without dead ends: 3639 [2022-11-20 11:50:13,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=314, Invalid=946, Unknown=0, NotChecked=0, Total=1260 [2022-11-20 11:50:13,587 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 4538 mSDsluCounter, 2915 mSDsCounter, 0 mSdLazyCounter, 6965 mSolverCounterSat, 1654 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4547 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 8619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1654 IncrementalHoareTripleChecker+Valid, 6965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:50:13,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4547 Valid, 3386 Invalid, 8619 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1654 Valid, 6965 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2022-11-20 11:50:13,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2022-11-20 11:50:15,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 2778. [2022-11-20 11:50:15,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2778 states, 2157 states have (on average 1.5702364394993047) internal successors, (3387), 2250 states have internal predecessors, (3387), 450 states have call successors, (450), 143 states have call predecessors, (450), 170 states have return successors, (590), 444 states have call predecessors, (590), 445 states have call successors, (590) [2022-11-20 11:50:15,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2778 states to 2778 states and 4427 transitions. [2022-11-20 11:50:15,363 INFO L78 Accepts]: Start accepts. Automaton has 2778 states and 4427 transitions. Word has length 148 [2022-11-20 11:50:15,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:50:15,364 INFO L495 AbstractCegarLoop]: Abstraction has 2778 states and 4427 transitions. [2022-11-20 11:50:15,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.416666666666666) internal successors, (101), 9 states have internal predecessors, (101), 6 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-20 11:50:15,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2778 states and 4427 transitions. [2022-11-20 11:50:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 11:50:15,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:50:15,367 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:50:15,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-20 11:50:15,368 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:50:15,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:50:15,368 INFO L85 PathProgramCache]: Analyzing trace with hash 531177971, now seen corresponding path program 1 times [2022-11-20 11:50:15,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:50:15,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106150217] [2022-11-20 11:50:15,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:15,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:50:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:50:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:50:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:50:15,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:50:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:50:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:50:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:50:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:50:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:50:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 11:50:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-20 11:50:15,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:50:15,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106150217] [2022-11-20 11:50:15,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106150217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:50:15,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:50:15,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:50:15,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298585205] [2022-11-20 11:50:15,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:50:15,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:50:15,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:50:15,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:50:15,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:50:15,915 INFO L87 Difference]: Start difference. First operand 2778 states and 4427 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 11:50:32,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:50:32,065 INFO L93 Difference]: Finished difference Result 7906 states and 13071 transitions. [2022-11-20 11:50:32,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:50:32,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 153 [2022-11-20 11:50:32,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:50:32,097 INFO L225 Difference]: With dead ends: 7906 [2022-11-20 11:50:32,097 INFO L226 Difference]: Without dead ends: 5503 [2022-11-20 11:50:32,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:50:32,106 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 2574 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 3223 mSolverCounterSat, 1279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2587 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 4502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1279 IncrementalHoareTripleChecker+Valid, 3223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:50:32,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2587 Valid, 1766 Invalid, 4502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1279 Valid, 3223 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2022-11-20 11:50:32,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5503 states. [2022-11-20 11:50:34,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5503 to 4302. [2022-11-20 11:50:34,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4302 states, 3365 states have (on average 1.5595839524517088) internal successors, (5248), 3490 states have internal predecessors, (5248), 667 states have call successors, (667), 227 states have call predecessors, (667), 269 states have return successors, (873), 668 states have call predecessors, (873), 662 states have call successors, (873) [2022-11-20 11:50:34,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4302 states to 4302 states and 6788 transitions. [2022-11-20 11:50:34,634 INFO L78 Accepts]: Start accepts. Automaton has 4302 states and 6788 transitions. Word has length 153 [2022-11-20 11:50:34,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:50:34,635 INFO L495 AbstractCegarLoop]: Abstraction has 4302 states and 6788 transitions. [2022-11-20 11:50:34,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 4 states have internal predecessors, (102), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 11:50:34,635 INFO L276 IsEmpty]: Start isEmpty. Operand 4302 states and 6788 transitions. [2022-11-20 11:50:34,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 11:50:34,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:50:34,638 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:50:34,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-20 11:50:34,638 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:50:34,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:50:34,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1840561291, now seen corresponding path program 1 times [2022-11-20 11:50:34,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:50:34,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900210471] [2022-11-20 11:50:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:34,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:50:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:34,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:50:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:34,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:34,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:50:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:50:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 11:50:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-20 11:50:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:50:35,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:50:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 11:50:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:50:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 11:50:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-20 11:50:35,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:50:35,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900210471] [2022-11-20 11:50:35,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900210471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:50:35,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618765821] [2022-11-20 11:50:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:35,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:50:35,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:50:35,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:50:35,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:50:35,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:35,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 1549 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:50:35,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:50:35,705 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-20 11:50:35,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:50:35,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618765821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:50:35,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:50:35,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-11-20 11:50:35,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567464449] [2022-11-20 11:50:35,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:50:35,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:50:35,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:50:35,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:50:35,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:50:35,708 INFO L87 Difference]: Start difference. First operand 4302 states and 6788 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 11:50:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:50:39,037 INFO L93 Difference]: Finished difference Result 8681 states and 13933 transitions. [2022-11-20 11:50:39,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:50:39,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2022-11-20 11:50:39,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:50:39,060 INFO L225 Difference]: With dead ends: 8681 [2022-11-20 11:50:39,060 INFO L226 Difference]: Without dead ends: 4422 [2022-11-20 11:50:39,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 180 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:50:39,074 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 755 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:50:39,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [773 Valid, 2052 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:50:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2022-11-20 11:50:41,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4422. [2022-11-20 11:50:41,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4422 states, 3470 states have (on average 1.5631123919308358) internal successors, (5424), 3595 states have internal predecessors, (5424), 667 states have call successors, (667), 242 states have call predecessors, (667), 284 states have return successors, (880), 668 states have call predecessors, (880), 662 states have call successors, (880) [2022-11-20 11:50:41,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4422 states to 4422 states and 6971 transitions. [2022-11-20 11:50:41,698 INFO L78 Accepts]: Start accepts. Automaton has 4422 states and 6971 transitions. Word has length 153 [2022-11-20 11:50:41,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:50:41,698 INFO L495 AbstractCegarLoop]: Abstraction has 4422 states and 6971 transitions. [2022-11-20 11:50:41,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-20 11:50:41,699 INFO L276 IsEmpty]: Start isEmpty. Operand 4422 states and 6971 transitions. [2022-11-20 11:50:41,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-20 11:50:41,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:50:41,701 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:50:41,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 11:50:41,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:50:41,909 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:50:41,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:50:41,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1767281559, now seen corresponding path program 1 times [2022-11-20 11:50:41,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:50:41,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241814212] [2022-11-20 11:50:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:41,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:50:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:50:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:42,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:50:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:50:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:50:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:42,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:50:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:50:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 11:50:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:50:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:50:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:50:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-20 11:50:42,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:50:42,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241814212] [2022-11-20 11:50:42,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241814212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:50:42,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:50:42,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:50:42,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334900727] [2022-11-20 11:50:42,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:50:42,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:50:42,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:50:42,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:50:42,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:50:42,542 INFO L87 Difference]: Start difference. First operand 4422 states and 6971 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 11:50:54,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:50:54,601 INFO L93 Difference]: Finished difference Result 5719 states and 9455 transitions. [2022-11-20 11:50:54,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:50:54,602 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 155 [2022-11-20 11:50:54,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:50:54,633 INFO L225 Difference]: With dead ends: 5719 [2022-11-20 11:50:54,633 INFO L226 Difference]: Without dead ends: 5704 [2022-11-20 11:50:54,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-20 11:50:54,639 INFO L413 NwaCegarLoop]: 468 mSDtfsCounter, 2665 mSDsluCounter, 1431 mSDsCounter, 0 mSdLazyCounter, 3614 mSolverCounterSat, 1044 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2676 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 4658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1044 IncrementalHoareTripleChecker+Valid, 3614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:50:54,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2676 Valid, 1899 Invalid, 4658 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1044 Valid, 3614 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-20 11:50:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2022-11-20 11:50:57,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 4434. [2022-11-20 11:50:57,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 3482 states have (on average 1.5611717403790926) internal successors, (5436), 3607 states have internal predecessors, (5436), 667 states have call successors, (667), 242 states have call predecessors, (667), 284 states have return successors, (880), 668 states have call predecessors, (880), 662 states have call successors, (880) [2022-11-20 11:50:57,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 6983 transitions. [2022-11-20 11:50:57,839 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 6983 transitions. Word has length 155 [2022-11-20 11:50:57,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:50:57,839 INFO L495 AbstractCegarLoop]: Abstraction has 4434 states and 6983 transitions. [2022-11-20 11:50:57,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 6 states have internal predecessors, (103), 3 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-20 11:50:57,840 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 6983 transitions. [2022-11-20 11:50:57,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-20 11:50:57,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:50:57,841 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:50:57,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-20 11:50:57,842 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:50:57,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:50:57,842 INFO L85 PathProgramCache]: Analyzing trace with hash -926374894, now seen corresponding path program 1 times [2022-11-20 11:50:57,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:50:57,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757082134] [2022-11-20 11:50:57,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:50:57,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:50:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:50:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:50:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:50:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:58,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:50:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:50:58,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:50:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:50:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 11:50:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:50:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:50:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:50:58,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:50:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:50:58,433 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-20 11:50:58,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:50:58,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757082134] [2022-11-20 11:50:58,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757082134] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:50:58,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:50:58,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:50:58,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209088250] [2022-11-20 11:50:58,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:50:58,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:50:58,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:50:58,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:50:58,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:50:58,435 INFO L87 Difference]: Start difference. First operand 4434 states and 6983 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 6 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-20 11:51:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:09,780 INFO L93 Difference]: Finished difference Result 5572 states and 9179 transitions. [2022-11-20 11:51:09,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-20 11:51:09,781 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 6 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) Word has length 161 [2022-11-20 11:51:09,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:09,802 INFO L225 Difference]: With dead ends: 5572 [2022-11-20 11:51:09,802 INFO L226 Difference]: Without dead ends: 5557 [2022-11-20 11:51:09,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:51:09,806 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1761 mSDsluCounter, 2586 mSDsCounter, 0 mSdLazyCounter, 4702 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 3075 SdHoareTripleChecker+Invalid, 5286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 4702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:09,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1837 Valid, 3075 Invalid, 5286 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [584 Valid, 4702 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-20 11:51:09,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5557 states. [2022-11-20 11:51:12,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5557 to 4434. [2022-11-20 11:51:12,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4434 states, 3482 states have (on average 1.5591614014933945) internal successors, (5429), 3607 states have internal predecessors, (5429), 667 states have call successors, (667), 242 states have call predecessors, (667), 284 states have return successors, (880), 668 states have call predecessors, (880), 662 states have call successors, (880) [2022-11-20 11:51:12,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4434 states to 4434 states and 6976 transitions. [2022-11-20 11:51:12,613 INFO L78 Accepts]: Start accepts. Automaton has 4434 states and 6976 transitions. Word has length 161 [2022-11-20 11:51:12,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:12,613 INFO L495 AbstractCegarLoop]: Abstraction has 4434 states and 6976 transitions. [2022-11-20 11:51:12,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 6 states have internal predecessors, (107), 2 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-20 11:51:12,614 INFO L276 IsEmpty]: Start isEmpty. Operand 4434 states and 6976 transitions. [2022-11-20 11:51:12,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-20 11:51:12,615 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:12,615 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:12,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-20 11:51:12,616 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:51:12,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:12,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1928300679, now seen corresponding path program 1 times [2022-11-20 11:51:12,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:12,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840314709] [2022-11-20 11:51:12,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:12,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:12,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:51:12,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:12,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:12,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:12,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:51:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:51:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:13,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:51:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:13,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:51:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:51:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 11:51:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:51:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:51:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:51:13,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:51:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-20 11:51:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,541 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 11:51:13,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:13,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840314709] [2022-11-20 11:51:13,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840314709] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:51:13,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243957776] [2022-11-20 11:51:13,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:13,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:13,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:13,544 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:13,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:51:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:13,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:51:13,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:14,066 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 11:51:14,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:51:14,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243957776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:14,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:51:14,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-11-20 11:51:14,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647381756] [2022-11-20 11:51:14,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:14,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:51:14,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:14,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:51:14,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:51:14,072 INFO L87 Difference]: Start difference. First operand 4434 states and 6976 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 11:51:23,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:23,336 INFO L93 Difference]: Finished difference Result 14173 states and 22789 transitions. [2022-11-20 11:51:23,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:51:23,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 172 [2022-11-20 11:51:23,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:23,375 INFO L225 Difference]: With dead ends: 14173 [2022-11-20 11:51:23,375 INFO L226 Difference]: Without dead ends: 9784 [2022-11-20 11:51:23,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 209 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:51:23,386 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 1813 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:23,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 932 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 11:51:23,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9784 states. [2022-11-20 11:51:29,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9784 to 9395. [2022-11-20 11:51:29,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9395 states, 7267 states have (on average 1.56034126874914) internal successors, (11339), 7563 states have internal predecessors, (11339), 1542 states have call successors, (1542), 479 states have call predecessors, (1542), 585 states have return successors, (2180), 1555 states have call predecessors, (2180), 1537 states have call successors, (2180) [2022-11-20 11:51:29,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9395 states to 9395 states and 15061 transitions. [2022-11-20 11:51:29,332 INFO L78 Accepts]: Start accepts. Automaton has 9395 states and 15061 transitions. Word has length 172 [2022-11-20 11:51:29,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:51:29,332 INFO L495 AbstractCegarLoop]: Abstraction has 9395 states and 15061 transitions. [2022-11-20 11:51:29,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 11:51:29,333 INFO L276 IsEmpty]: Start isEmpty. Operand 9395 states and 15061 transitions. [2022-11-20 11:51:29,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-20 11:51:29,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:51:29,336 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:51:29,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-20 11:51:29,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-20 11:51:29,549 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:51:29,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:51:29,550 INFO L85 PathProgramCache]: Analyzing trace with hash -352359526, now seen corresponding path program 1 times [2022-11-20 11:51:29,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:51:29,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122410292] [2022-11-20 11:51:29,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:29,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:51:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:29,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:51:29,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:29,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:29,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:51:29,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:51:30,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:30,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:51:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:30,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:51:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:51:30,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:51:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 11:51:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:51:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:51:30,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:51:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:51:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-20 11:51:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,596 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 11:51:30,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:51:30,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122410292] [2022-11-20 11:51:30,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122410292] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:51:30,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882507227] [2022-11-20 11:51:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:51:30,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:51:30,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:51:30,598 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:51:30,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:51:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:51:30,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 1606 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:51:30,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:51:31,072 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 11:51:31,073 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:51:31,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882507227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:51:31,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:51:31,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-11-20 11:51:31,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869022514] [2022-11-20 11:51:31,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:51:31,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:51:31,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:51:31,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:51:31,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:51:31,075 INFO L87 Difference]: Start difference. First operand 9395 states and 15061 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 11:51:50,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:51:50,563 INFO L93 Difference]: Finished difference Result 30558 states and 50500 transitions. [2022-11-20 11:51:50,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:51:50,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 173 [2022-11-20 11:51:50,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:51:50,693 INFO L225 Difference]: With dead ends: 30558 [2022-11-20 11:51:50,694 INFO L226 Difference]: Without dead ends: 21208 [2022-11-20 11:51:50,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 210 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:51:50,732 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 1820 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:51:50,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 885 Invalid, 1701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [391 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 11:51:50,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21208 states. [2022-11-20 11:52:07,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21208 to 20375. [2022-11-20 11:52:07,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20375 states, 15468 states have (on average 1.5590250840444788) internal successors, (24115), 16182 states have internal predecessors, (24115), 3692 states have call successors, (3692), 953 states have call predecessors, (3692), 1214 states have return successors, (5715), 3743 states have call predecessors, (5715), 3687 states have call successors, (5715) [2022-11-20 11:52:07,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20375 states to 20375 states and 33522 transitions. [2022-11-20 11:52:07,510 INFO L78 Accepts]: Start accepts. Automaton has 20375 states and 33522 transitions. Word has length 173 [2022-11-20 11:52:07,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:52:07,511 INFO L495 AbstractCegarLoop]: Abstraction has 20375 states and 33522 transitions. [2022-11-20 11:52:07,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 11:52:07,511 INFO L276 IsEmpty]: Start isEmpty. Operand 20375 states and 33522 transitions. [2022-11-20 11:52:07,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-20 11:52:07,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:52:07,514 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:52:07,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:52:07,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-20 11:52:07,718 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:52:07,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:52:07,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1961622057, now seen corresponding path program 1 times [2022-11-20 11:52:07,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:52:07,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463675510] [2022-11-20 11:52:07,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:07,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:52:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:07,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:52:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:52:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:52:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:52:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:52:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:52:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:52:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:52:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:52:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-20 11:52:08,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:52:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:52:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-20 11:52:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-20 11:52:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 11:52:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 11:52:08,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:52:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:52:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-20 11:52:08,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,572 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-20 11:52:08,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:52:08,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463675510] [2022-11-20 11:52:08,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463675510] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:52:08,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914732907] [2022-11-20 11:52:08,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:52:08,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:52:08,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:52:08,574 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:52:08,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_467086c7-2cb5-403f-86f8-584d71c7aadc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:52:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:52:08,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 11:52:08,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:52:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-20 11:52:09,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:52:09,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914732907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:52:09,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:52:09,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-11-20 11:52:09,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104673827] [2022-11-20 11:52:09,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:52:09,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:52:09,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:52:09,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:52:09,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:52:09,024 INFO L87 Difference]: Start difference. First operand 20375 states and 33522 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-20 11:52:51,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:52:51,195 INFO L93 Difference]: Finished difference Result 67354 states and 115860 transitions. [2022-11-20 11:52:51,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:52:51,196 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 174 [2022-11-20 11:52:51,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:52:51,453 INFO L225 Difference]: With dead ends: 67354 [2022-11-20 11:52:51,453 INFO L226 Difference]: Without dead ends: 47024 [2022-11-20 11:52:51,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 211 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:52:51,524 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1811 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1308 mSolverCounterSat, 395 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1884 SdHoareTripleChecker+Valid, 880 SdHoareTripleChecker+Invalid, 1703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 395 IncrementalHoareTripleChecker+Valid, 1308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:52:51,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1884 Valid, 880 Invalid, 1703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [395 Valid, 1308 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 11:52:51,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47024 states.