./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8 --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 e76bca30ba241523f00afb0ea64acdcdd753d47014073d825a6028b49fb542a9 --- 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-2329fc7 [2022-12-13 14:40:13,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:40:13,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:40:13,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:40:13,062 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:40:13,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:40:13,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:40:13,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:40:13,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:40:13,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:40:13,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:40:13,070 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:40:13,070 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:40:13,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:40:13,072 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:40:13,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:40:13,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:40:13,075 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:40:13,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:40:13,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:40:13,079 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:40:13,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:40:13,081 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:40:13,082 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:40:13,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:40:13,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:40:13,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:40:13,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:40:13,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:40:13,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:40:13,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:40:13,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:40:13,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:40:13,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:40:13,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:40:13,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:40:13,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:40:13,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:40:13,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:40:13,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:40:13,094 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:40:13,095 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:40:13,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:40:13,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:40:13,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:40:13,116 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:40:13,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:40:13,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:40:13,118 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:40:13,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:40:13,118 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:40:13,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:40:13,118 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:40:13,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:40:13,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:40:13,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:40:13,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:40:13,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:40:13,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:40:13,119 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:40:13,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:40:13,120 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:40:13,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:40:13,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:40:13,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:40:13,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:40:13,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:40:13,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:40:13,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:40:13,121 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:40:13,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:40:13,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:40:13,122 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:40:13,122 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:40:13,122 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:40:13,122 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:40:13,122 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:40:13,122 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e76bca30ba241523f00afb0ea64acdcdd753d47014073d825a6028b49fb542a9 [2022-12-13 14:40:13,316 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:40:13,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:40:13,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:40:13,334 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:40:13,334 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:40:13,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2022-12-13 14:40:15,934 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:40:16,122 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:40:16,122 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c [2022-12-13 14:40:16,134 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/data/6efd16627/a9e2de5ddc804c248f43521fee4f93d4/FLAG89296481c [2022-12-13 14:40:16,144 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/data/6efd16627/a9e2de5ddc804c248f43521fee4f93d4 [2022-12-13 14:40:16,146 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:40:16,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:40:16,147 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:40:16,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:40:16,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:40:16,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:40:16" (1/1) ... [2022-12-13 14:40:16,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@348f563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:40:16, skipping insertion in model container [2022-12-13 14:40:16,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:40:16" (1/1) ... [2022-12-13 14:40:16,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:40:16,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:40:16,299 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_2a6df3a1-a24e-4979-9de3-15875e59b573/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c[1545,1558] [2022-12-13 14:40:16,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:40:16,525 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:40:16,535 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_2a6df3a1-a24e-4979-9de3-15875e59b573/sv-benchmarks/c/product-lines/elevator_spec1_product09.cil.c[1545,1558] [2022-12-13 14:40:16,627 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:40:16,647 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:40:16,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:40:16 WrapperNode [2022-12-13 14:40:16,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:40:16,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:40:16,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:40:16,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:40:16,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:40:16" (1/1) ... [2022-12-13 14:40:16,683 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:40:16" (1/1) ... [2022-12-13 14:40:16,727 INFO L138 Inliner]: procedures = 89, calls = 331, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 801 [2022-12-13 14:40:16,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:40:16,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:40:16,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:40:16,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:40:16,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:40:16" (1/1) ... [2022-12-13 14:40:16,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:40:16" (1/1) ... [2022-12-13 14:40:16,745 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:40:16" (1/1) ... [2022-12-13 14:40:16,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:40:16" (1/1) ... [2022-12-13 14:40:16,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:40:16" (1/1) ... [2022-12-13 14:40:16,775 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:40:16" (1/1) ... [2022-12-13 14:40:16,780 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:40:16" (1/1) ... [2022-12-13 14:40:16,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:40:16" (1/1) ... [2022-12-13 14:40:16,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:40:16,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:40:16,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:40:16,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:40:16,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:40:16" (1/1) ... [2022-12-13 14:40:16,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:40:16,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:16,825 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:40:16,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:40:16,853 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-12-13 14:40:16,853 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-12-13 14:40:16,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:40:16,853 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-13 14:40:16,853 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-13 14:40:16,853 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-13 14:40:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-13 14:40:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-13 14:40:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-13 14:40:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-13 14:40:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-13 14:40:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 14:40:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 14:40:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 14:40:16,854 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 14:40:16,854 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-13 14:40:16,855 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-13 14:40:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-13 14:40:16,855 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-13 14:40:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-13 14:40:16,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-13 14:40:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-13 14:40:16,855 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-13 14:40:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-13 14:40:16,855 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-13 14:40:16,855 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-13 14:40:16,855 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-13 14:40:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-13 14:40:16,856 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-13 14:40:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-13 14:40:16,856 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-13 14:40:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-13 14:40:16,856 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-13 14:40:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-13 14:40:16,856 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-13 14:40:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:40:16,856 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-13 14:40:16,857 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-13 14:40:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-13 14:40:16,857 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-13 14:40:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-13 14:40:16,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-13 14:40:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:40:16,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:40:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-13 14:40:16,857 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-13 14:40:16,973 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:40:16,976 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:40:17,688 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:40:17,696 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:40:17,696 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 14:40:17,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:40:17 BoogieIcfgContainer [2022-12-13 14:40:17,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:40:17,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:40:17,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:40:17,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:40:17,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:40:16" (1/3) ... [2022-12-13 14:40:17,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dba7eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:40:17, skipping insertion in model container [2022-12-13 14:40:17,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:40:16" (2/3) ... [2022-12-13 14:40:17,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dba7eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:40:17, skipping insertion in model container [2022-12-13 14:40:17,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:40:17" (3/3) ... [2022-12-13 14:40:17,704 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product09.cil.c [2022-12-13 14:40:17,718 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:40:17,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:40:17,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:40:17,767 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;@a43a390, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:40:17,767 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 14:40:17,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 533 states, 421 states have (on average 1.7125890736342042) internal successors, (721), 442 states have internal predecessors, (721), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2022-12-13 14:40:17,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 14:40:17,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:17,788 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] [2022-12-13 14:40:17,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:17,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:17,792 INFO L85 PathProgramCache]: Analyzing trace with hash 702310628, now seen corresponding path program 1 times [2022-12-13 14:40:17,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:17,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087480839] [2022-12-13 14:40:17,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:17,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:18,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:18,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:18,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 14:40:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:18,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 14:40:18,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:18,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:18,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 14:40:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 14:40:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:18,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:18,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:18,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:18,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:18,525 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 14:40:18,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:18,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087480839] [2022-12-13 14:40:18,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087480839] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:18,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957438112] [2022-12-13 14:40:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:18,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:18,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:18,528 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:18,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:40:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:18,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 14:40:18,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 14:40:18,853 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:18,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957438112] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:18,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:18,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2022-12-13 14:40:18,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970269028] [2022-12-13 14:40:18,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:18,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:40:18,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:18,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:40:18,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:40:18,887 INFO L87 Difference]: Start difference. First operand has 533 states, 421 states have (on average 1.7125890736342042) internal successors, (721), 442 states have internal predecessors, (721), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-12-13 14:40:18,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:18,941 INFO L93 Difference]: Finished difference Result 554 states and 929 transitions. [2022-12-13 14:40:18,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 14:40:18,942 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 97 [2022-12-13 14:40:18,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:18,955 INFO L225 Difference]: With dead ends: 554 [2022-12-13 14:40:18,955 INFO L226 Difference]: Without dead ends: 525 [2022-12-13 14:40:18,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:40:18,960 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:18,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:18,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-12-13 14:40:19,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2022-12-13 14:40:19,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 415 states have (on average 1.7108433734939759) internal successors, (710), 434 states have internal predecessors, (710), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-12-13 14:40:19,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 883 transitions. [2022-12-13 14:40:19,015 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 883 transitions. Word has length 97 [2022-12-13 14:40:19,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:19,016 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 883 transitions. [2022-12-13 14:40:19,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-12-13 14:40:19,016 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 883 transitions. [2022-12-13 14:40:19,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 14:40:19,020 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:19,020 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] [2022-12-13 14:40:19,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:40:19,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:19,222 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:19,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:19,223 INFO L85 PathProgramCache]: Analyzing trace with hash -685415757, now seen corresponding path program 1 times [2022-12-13 14:40:19,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:19,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421586481] [2022-12-13 14:40:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:19,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:19,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:19,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:19,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:19,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 14:40:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:19,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 14:40:19,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:19,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:19,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 14:40:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:19,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-12-13 14:40:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:19,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:19,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:19,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:19,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:19,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 14:40:19,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:19,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421586481] [2022-12-13 14:40:19,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421586481] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:19,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075613662] [2022-12-13 14:40:19,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:19,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:19,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:19,707 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:19,709 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:40:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:19,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 1765 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:40:19,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:20,015 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 14:40:20,015 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:20,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075613662] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:20,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:20,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 14:40:20,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015864363] [2022-12-13 14:40:20,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:20,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:20,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:20,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:20,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:40:20,018 INFO L87 Difference]: Start difference. First operand 525 states and 883 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:20,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:20,088 INFO L93 Difference]: Finished difference Result 1041 states and 1758 transitions. [2022-12-13 14:40:20,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:40:20,089 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2022-12-13 14:40:20,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:20,092 INFO L225 Difference]: With dead ends: 1041 [2022-12-13 14:40:20,093 INFO L226 Difference]: Without dead ends: 525 [2022-12-13 14:40:20,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:40:20,097 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 14 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:20,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2600 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-12-13 14:40:20,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2022-12-13 14:40:20,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 415 states have (on average 1.7084337349397591) internal successors, (709), 434 states have internal predecessors, (709), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-12-13 14:40:20,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 882 transitions. [2022-12-13 14:40:20,121 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 882 transitions. Word has length 99 [2022-12-13 14:40:20,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:20,121 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 882 transitions. [2022-12-13 14:40:20,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:20,122 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 882 transitions. [2022-12-13 14:40:20,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 14:40:20,124 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:20,124 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] [2022-12-13 14:40:20,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 14:40:20,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:20,324 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:20,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:20,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1110327915, now seen corresponding path program 1 times [2022-12-13 14:40:20,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:20,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133951289] [2022-12-13 14:40:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:20,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:20,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:20,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:20,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:20,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 14:40:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:20,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:20,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:20,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:20,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 14:40:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:20,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:20,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:20,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:20,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:20,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:20,716 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 14:40:20,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:20,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133951289] [2022-12-13 14:40:20,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133951289] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:20,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126533921] [2022-12-13 14:40:20,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:20,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:20,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:20,718 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:20,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 14:40:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:20,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:40:20,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 14:40:20,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:20,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126533921] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:20,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:20,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 14:40:20,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828386022] [2022-12-13 14:40:20,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:20,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:20,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:20,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:20,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:40:20,976 INFO L87 Difference]: Start difference. First operand 525 states and 882 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:21,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:21,041 INFO L93 Difference]: Finished difference Result 1041 states and 1756 transitions. [2022-12-13 14:40:21,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:40:21,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 101 [2022-12-13 14:40:21,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:21,046 INFO L225 Difference]: With dead ends: 1041 [2022-12-13 14:40:21,046 INFO L226 Difference]: Without dead ends: 525 [2022-12-13 14:40:21,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:40:21,050 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 12 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:21,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2600 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:21,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-12-13 14:40:21,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2022-12-13 14:40:21,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 415 states have (on average 1.7060240963855422) internal successors, (708), 434 states have internal predecessors, (708), 89 states have call successors, (89), 21 states have call predecessors, (89), 20 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-12-13 14:40:21,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 881 transitions. [2022-12-13 14:40:21,078 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 881 transitions. Word has length 101 [2022-12-13 14:40:21,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:21,079 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 881 transitions. [2022-12-13 14:40:21,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:21,079 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 881 transitions. [2022-12-13 14:40:21,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 14:40:21,082 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:21,082 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] [2022-12-13 14:40:21,088 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 14:40:21,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:21,284 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:21,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:21,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1399421363, now seen corresponding path program 1 times [2022-12-13 14:40:21,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:21,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810741213] [2022-12-13 14:40:21,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:21,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:21,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:21,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:21,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:21,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:21,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 14:40:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:21,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:21,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:21,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:21,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 14:40:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:21,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:21,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:21,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:21,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:21,784 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 14:40:21,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:21,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810741213] [2022-12-13 14:40:21,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810741213] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:21,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225128361] [2022-12-13 14:40:21,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:21,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:21,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:21,786 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:21,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 14:40:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:22,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:40:22,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 14:40:22,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:22,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225128361] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:22,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:22,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 14:40:22,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326702632] [2022-12-13 14:40:22,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:22,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:22,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:22,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:22,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:40:22,049 INFO L87 Difference]: Start difference. First operand 525 states and 881 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:22,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:22,106 INFO L93 Difference]: Finished difference Result 1048 states and 1763 transitions. [2022-12-13 14:40:22,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:40:22,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 103 [2022-12-13 14:40:22,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:22,109 INFO L225 Difference]: With dead ends: 1048 [2022-12-13 14:40:22,109 INFO L226 Difference]: Without dead ends: 534 [2022-12-13 14:40:22,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:40:22,112 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 20 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:22,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2600 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:22,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-12-13 14:40:22,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2022-12-13 14:40:22,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 423 states have (on average 1.702127659574468) internal successors, (720), 442 states have internal predecessors, (720), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-12-13 14:40:22,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 893 transitions. [2022-12-13 14:40:22,126 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 893 transitions. Word has length 103 [2022-12-13 14:40:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:22,127 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 893 transitions. [2022-12-13 14:40:22,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 893 transitions. [2022-12-13 14:40:22,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 14:40:22,129 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:22,129 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] [2022-12-13 14:40:22,135 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 14:40:22,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:22,330 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:22,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:22,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1663492228, now seen corresponding path program 1 times [2022-12-13 14:40:22,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:22,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791366412] [2022-12-13 14:40:22,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:22,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:22,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:22,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:22,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:22,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 14:40:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:22,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:40:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:22,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:22,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:22,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 14:40:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:22,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:22,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:22,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:22,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:22,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:22,702 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 14:40:22,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:22,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791366412] [2022-12-13 14:40:22,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791366412] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:22,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742713740] [2022-12-13 14:40:22,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:22,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:22,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:22,704 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:22,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 14:40:22,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:22,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:40:22,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 14:40:22,957 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:22,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742713740] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:22,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:22,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 14:40:22,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146444498] [2022-12-13 14:40:22,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:22,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:22,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:22,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:22,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:40:22,959 INFO L87 Difference]: Start difference. First operand 534 states and 893 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:23,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:23,016 INFO L93 Difference]: Finished difference Result 1050 states and 1764 transitions. [2022-12-13 14:40:23,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:40:23,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 104 [2022-12-13 14:40:23,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:23,020 INFO L225 Difference]: With dead ends: 1050 [2022-12-13 14:40:23,020 INFO L226 Difference]: Without dead ends: 534 [2022-12-13 14:40:23,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:40:23,024 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 18 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:23,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2600 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:23,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-12-13 14:40:23,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2022-12-13 14:40:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 423 states have (on average 1.6997635933806146) internal successors, (719), 442 states have internal predecessors, (719), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-12-13 14:40:23,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 892 transitions. [2022-12-13 14:40:23,045 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 892 transitions. Word has length 104 [2022-12-13 14:40:23,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:23,045 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 892 transitions. [2022-12-13 14:40:23,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:23,046 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 892 transitions. [2022-12-13 14:40:23,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 14:40:23,049 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:23,049 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] [2022-12-13 14:40:23,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 14:40:23,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:23,249 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:23,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:23,250 INFO L85 PathProgramCache]: Analyzing trace with hash 628967127, now seen corresponding path program 1 times [2022-12-13 14:40:23,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:23,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238539669] [2022-12-13 14:40:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:23,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:23,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:23,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:23,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:23,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:23,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:23,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:23,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 14:40:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:23,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:23,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:23,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:23,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 14:40:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:23,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:23,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:23,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:23,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 14:40:23,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:23,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238539669] [2022-12-13 14:40:23,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238539669] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:23,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385482184] [2022-12-13 14:40:23,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:23,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:23,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:23,615 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:23,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 14:40:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:23,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:40:23,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 14:40:23,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:23,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385482184] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:23,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:23,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 14:40:23,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351825583] [2022-12-13 14:40:23,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:23,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:23,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:23,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:23,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:40:23,831 INFO L87 Difference]: Start difference. First operand 534 states and 892 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:23,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:23,878 INFO L93 Difference]: Finished difference Result 1050 states and 1763 transitions. [2022-12-13 14:40:23,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:40:23,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2022-12-13 14:40:23,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:23,882 INFO L225 Difference]: With dead ends: 1050 [2022-12-13 14:40:23,882 INFO L226 Difference]: Without dead ends: 534 [2022-12-13 14:40:23,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:40:23,886 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 17 mSDsluCounter, 1731 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2600 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:23,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2600 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:23,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-12-13 14:40:23,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2022-12-13 14:40:23,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 423 states have (on average 1.6973995271867612) internal successors, (718), 442 states have internal predecessors, (718), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-12-13 14:40:23,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 891 transitions. [2022-12-13 14:40:23,906 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 891 transitions. Word has length 105 [2022-12-13 14:40:23,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:23,906 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 891 transitions. [2022-12-13 14:40:23,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:23,906 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 891 transitions. [2022-12-13 14:40:23,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 14:40:23,909 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:23,909 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] [2022-12-13 14:40:23,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 14:40:24,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 14:40:24,110 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:24,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:24,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1434263264, now seen corresponding path program 1 times [2022-12-13 14:40:24,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:24,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671166398] [2022-12-13 14:40:24,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:24,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:24,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:24,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:24,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:24,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:24,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:24,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 14:40:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:24,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:24,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:24,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 14:40:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:24,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:24,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:24,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:24,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:24,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:24,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:24,584 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:40:24,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:24,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671166398] [2022-12-13 14:40:24,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671166398] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:24,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120134652] [2022-12-13 14:40:24,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:24,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:24,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:24,585 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:24,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 14:40:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:24,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:40:24,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:40:24,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:24,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120134652] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:24,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:24,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-12-13 14:40:24,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997710874] [2022-12-13 14:40:24,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:24,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:24,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:24,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:24,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:40:24,837 INFO L87 Difference]: Start difference. First operand 534 states and 891 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:24,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:24,915 INFO L93 Difference]: Finished difference Result 1061 states and 1784 transitions. [2022-12-13 14:40:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:40:24,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 106 [2022-12-13 14:40:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:24,918 INFO L225 Difference]: With dead ends: 1061 [2022-12-13 14:40:24,919 INFO L226 Difference]: Without dead ends: 534 [2022-12-13 14:40:24,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:40:24,921 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 135 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:24,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2417 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:40:24,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-12-13 14:40:24,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2022-12-13 14:40:24,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 423 states have (on average 1.6855791962174942) internal successors, (713), 442 states have internal predecessors, (713), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-12-13 14:40:24,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 886 transitions. [2022-12-13 14:40:24,934 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 886 transitions. Word has length 106 [2022-12-13 14:40:24,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:24,935 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 886 transitions. [2022-12-13 14:40:24,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:24,935 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 886 transitions. [2022-12-13 14:40:24,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-13 14:40:24,936 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:24,937 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] [2022-12-13 14:40:24,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 14:40:25,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:25,137 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:25,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:25,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2115631714, now seen corresponding path program 1 times [2022-12-13 14:40:25,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:25,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678480731] [2022-12-13 14:40:25,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:25,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:25,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:25,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:25,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:25,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:25,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:25,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 14:40:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:25,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:25,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:25,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 14:40:25,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:25,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:25,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:25,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:25,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:25,575 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:40:25,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:25,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678480731] [2022-12-13 14:40:25,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678480731] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:25,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676966679] [2022-12-13 14:40:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:25,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:25,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:25,577 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:25,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 14:40:25,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:25,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:40:25,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:25,852 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:40:25,852 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:25,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676966679] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:25,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:25,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-12-13 14:40:25,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252502847] [2022-12-13 14:40:25,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:25,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:25,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:25,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:25,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:40:25,854 INFO L87 Difference]: Start difference. First operand 534 states and 886 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:25,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:25,944 INFO L93 Difference]: Finished difference Result 1061 states and 1774 transitions. [2022-12-13 14:40:25,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:40:25,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 108 [2022-12-13 14:40:25,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:25,947 INFO L225 Difference]: With dead ends: 1061 [2022-12-13 14:40:25,947 INFO L226 Difference]: Without dead ends: 534 [2022-12-13 14:40:25,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:40:25,949 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 129 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:25,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2417 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:40:25,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2022-12-13 14:40:25,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 534. [2022-12-13 14:40:25,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 423 states have (on average 1.673758865248227) internal successors, (708), 442 states have internal predecessors, (708), 89 states have call successors, (89), 22 states have call predecessors, (89), 21 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-12-13 14:40:25,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 881 transitions. [2022-12-13 14:40:25,961 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 881 transitions. Word has length 108 [2022-12-13 14:40:25,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:25,961 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 881 transitions. [2022-12-13 14:40:25,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:25,961 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 881 transitions. [2022-12-13 14:40:25,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-12-13 14:40:25,963 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:25,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:25,970 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 14:40:26,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:26,164 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:26,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:26,164 INFO L85 PathProgramCache]: Analyzing trace with hash -892630400, now seen corresponding path program 1 times [2022-12-13 14:40:26,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:26,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076664224] [2022-12-13 14:40:26,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:26,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:26,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:26,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:26,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:26,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:26,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 14:40:26,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:26,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:26,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:26,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 14:40:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:26,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:26,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:26,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:26,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:26,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:26,587 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:40:26,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:26,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076664224] [2022-12-13 14:40:26,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076664224] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:26,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258181261] [2022-12-13 14:40:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:26,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:26,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:26,589 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:26,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 14:40:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:26,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 1776 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:40:26,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:26,817 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:40:26,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:26,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258181261] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:26,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:26,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-12-13 14:40:26,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717761829] [2022-12-13 14:40:26,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:26,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:26,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:26,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:26,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:40:26,819 INFO L87 Difference]: Start difference. First operand 534 states and 881 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:26,935 INFO L93 Difference]: Finished difference Result 1097 states and 1823 transitions. [2022-12-13 14:40:26,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:40:26,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 110 [2022-12-13 14:40:26,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:26,938 INFO L225 Difference]: With dead ends: 1097 [2022-12-13 14:40:26,938 INFO L226 Difference]: Without dead ends: 585 [2022-12-13 14:40:26,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:40:26,939 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 179 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:26,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2427 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:40:26,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-12-13 14:40:26,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-12-13 14:40:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 473 states have (on average 1.6765327695560253) internal successors, (793), 492 states have internal predecessors, (793), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-12-13 14:40:26,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 966 transitions. [2022-12-13 14:40:26,952 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 966 transitions. Word has length 110 [2022-12-13 14:40:26,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:26,952 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 966 transitions. [2022-12-13 14:40:26,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:26,952 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 966 transitions. [2022-12-13 14:40:26,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 14:40:26,954 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:26,954 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] [2022-12-13 14:40:26,961 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 14:40:27,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:27,155 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:27,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1996732095, now seen corresponding path program 1 times [2022-12-13 14:40:27,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:27,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685933567] [2022-12-13 14:40:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:27,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:27,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:27,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:27,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:27,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:27,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 14:40:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:27,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:27,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:27,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:27,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 14:40:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:27,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:27,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:27,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:27,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:27,546 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:40:27,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:27,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685933567] [2022-12-13 14:40:27,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685933567] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:27,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450536577] [2022-12-13 14:40:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:27,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:27,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:27,548 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:27,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 14:40:27,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:27,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 1777 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:40:27,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:40:27,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:27,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1450536577] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:27,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:27,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-12-13 14:40:27,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71412871] [2022-12-13 14:40:27,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:27,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:27,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:27,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:27,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:40:27,743 INFO L87 Difference]: Start difference. First operand 585 states and 966 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:27,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:27,856 INFO L93 Difference]: Finished difference Result 1112 states and 1847 transitions. [2022-12-13 14:40:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:40:27,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 111 [2022-12-13 14:40:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:27,859 INFO L225 Difference]: With dead ends: 1112 [2022-12-13 14:40:27,859 INFO L226 Difference]: Without dead ends: 585 [2022-12-13 14:40:27,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:40:27,861 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 173 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:27,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2427 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:40:27,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-12-13 14:40:27,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 585. [2022-12-13 14:40:27,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 585 states, 473 states have (on average 1.6659619450317125) internal successors, (788), 492 states have internal predecessors, (788), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 82 states have call predecessors, (84), 84 states have call successors, (84) [2022-12-13 14:40:27,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 961 transitions. [2022-12-13 14:40:27,872 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 961 transitions. Word has length 111 [2022-12-13 14:40:27,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:27,872 INFO L495 AbstractCegarLoop]: Abstraction has 585 states and 961 transitions. [2022-12-13 14:40:27,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:27,872 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 961 transitions. [2022-12-13 14:40:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 14:40:27,874 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:27,874 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] [2022-12-13 14:40:27,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 14:40:28,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 14:40:28,075 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:28,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:28,076 INFO L85 PathProgramCache]: Analyzing trace with hash -615041730, now seen corresponding path program 1 times [2022-12-13 14:40:28,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:28,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535428125] [2022-12-13 14:40:28,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:28,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:28,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:28,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:28,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:28,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:28,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:28,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 14:40:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:28,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:28,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:28,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 14:40:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:28,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:28,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:28,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:28,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:28,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-13 14:40:28,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:28,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535428125] [2022-12-13 14:40:28,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535428125] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:28,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981616649] [2022-12-13 14:40:28,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:28,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:28,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:28,498 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:28,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 14:40:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:28,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 14:40:28,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:28,766 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 14:40:28,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:28,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981616649] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:28,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:28,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-12-13 14:40:28,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663967865] [2022-12-13 14:40:28,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:28,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:40:28,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:28,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:40:28,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:40:28,767 INFO L87 Difference]: Start difference. First operand 585 states and 961 transitions. Second operand has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:40:28,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:28,886 INFO L93 Difference]: Finished difference Result 1135 states and 1877 transitions. [2022-12-13 14:40:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:40:28,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2022-12-13 14:40:28,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:28,889 INFO L225 Difference]: With dead ends: 1135 [2022-12-13 14:40:28,889 INFO L226 Difference]: Without dead ends: 623 [2022-12-13 14:40:28,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-12-13 14:40:28,890 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 177 mSDsluCounter, 4993 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 5843 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:28,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 5843 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:40:28,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-12-13 14:40:28,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 604. [2022-12-13 14:40:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 489 states have (on average 1.6646216768916156) internal successors, (814), 510 states have internal predecessors, (814), 90 states have call successors, (90), 23 states have call predecessors, (90), 24 states have return successors, (87), 83 states have call predecessors, (87), 85 states have call successors, (87) [2022-12-13 14:40:28,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 991 transitions. [2022-12-13 14:40:28,906 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 991 transitions. Word has length 111 [2022-12-13 14:40:28,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:28,907 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 991 transitions. [2022-12-13 14:40:28,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:40:28,907 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 991 transitions. [2022-12-13 14:40:28,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 14:40:28,909 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:28,910 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] [2022-12-13 14:40:28,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 14:40:29,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 14:40:29,110 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:29,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:29,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1424529187, now seen corresponding path program 1 times [2022-12-13 14:40:29,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:29,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202494104] [2022-12-13 14:40:29,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:29,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:29,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:29,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:29,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:29,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:29,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 14:40:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:29,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:29,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:29,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:29,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:29,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 14:40:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:29,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:29,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:29,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:29,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:29,414 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 14:40:29,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:29,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202494104] [2022-12-13 14:40:29,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202494104] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:29,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085483305] [2022-12-13 14:40:29,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:29,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:29,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:29,415 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:29,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 14:40:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:29,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 1772 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:40:29,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:29,713 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:40:29,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:29,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085483305] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:29,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:29,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 14:40:29,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383389552] [2022-12-13 14:40:29,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:29,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:40:29,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:29,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:40:29,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:40:29,715 INFO L87 Difference]: Start difference. First operand 604 states and 991 transitions. Second operand has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:40:29,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:29,785 INFO L93 Difference]: Finished difference Result 1073 states and 1777 transitions. [2022-12-13 14:40:29,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:40:29,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2022-12-13 14:40:29,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:29,788 INFO L225 Difference]: With dead ends: 1073 [2022-12-13 14:40:29,788 INFO L226 Difference]: Without dead ends: 628 [2022-12-13 14:40:29,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:40:29,789 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 134 mSDsluCounter, 4204 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5066 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:29,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5066 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:29,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-12-13 14:40:29,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 623. [2022-12-13 14:40:29,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 505 states have (on average 1.6633663366336633) internal successors, (840), 528 states have internal predecessors, (840), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-12-13 14:40:29,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1021 transitions. [2022-12-13 14:40:29,805 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1021 transitions. Word has length 111 [2022-12-13 14:40:29,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:29,805 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 1021 transitions. [2022-12-13 14:40:29,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:40:29,806 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1021 transitions. [2022-12-13 14:40:29,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 14:40:29,808 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:29,808 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] [2022-12-13 14:40:29,815 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 14:40:30,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-13 14:40:30,008 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:30,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:30,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1338390481, now seen corresponding path program 1 times [2022-12-13 14:40:30,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:30,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337765838] [2022-12-13 14:40:30,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:30,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:30,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:30,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:30,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:30,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:30,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 14:40:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:30,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:30,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:30,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 14:40:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:30,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:30,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:30,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:30,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:30,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:30,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:30,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 14:40:30,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:30,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337765838] [2022-12-13 14:40:30,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337765838] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:30,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588164479] [2022-12-13 14:40:30,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:30,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:30,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:30,278 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:30,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 14:40:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:30,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:40:30,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:40:30,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:30,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [588164479] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:30,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:30,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 14:40:30,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281968467] [2022-12-13 14:40:30,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:30,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:40:30,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:30,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:40:30,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:40:30,567 INFO L87 Difference]: Start difference. First operand 623 states and 1021 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:40:30,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:30,643 INFO L93 Difference]: Finished difference Result 1103 states and 1828 transitions. [2022-12-13 14:40:30,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:40:30,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-12-13 14:40:30,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:30,647 INFO L225 Difference]: With dead ends: 1103 [2022-12-13 14:40:30,647 INFO L226 Difference]: Without dead ends: 658 [2022-12-13 14:40:30,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:40:30,649 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 143 mSDsluCounter, 4194 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5056 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:30,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5056 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:30,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-12-13 14:40:30,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 623. [2022-12-13 14:40:30,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 505 states have (on average 1.6633663366336633) internal successors, (840), 528 states have internal predecessors, (840), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-12-13 14:40:30,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1021 transitions. [2022-12-13 14:40:30,663 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1021 transitions. Word has length 112 [2022-12-13 14:40:30,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:30,663 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 1021 transitions. [2022-12-13 14:40:30,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:40:30,663 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1021 transitions. [2022-12-13 14:40:30,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 14:40:30,665 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:30,665 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:30,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 14:40:30,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:30,866 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:30,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:30,867 INFO L85 PathProgramCache]: Analyzing trace with hash -187217, now seen corresponding path program 1 times [2022-12-13 14:40:30,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:30,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399136872] [2022-12-13 14:40:30,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:30,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:31,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 14:40:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:31,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 14:40:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 14:40:31,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:31,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399136872] [2022-12-13 14:40:31,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399136872] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:31,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461811316] [2022-12-13 14:40:31,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:31,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:31,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:31,227 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:31,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 14:40:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1769 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 14:40:31,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:31,522 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:40:31,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:31,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461811316] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:31,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:31,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-12-13 14:40:31,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28769202] [2022-12-13 14:40:31,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:31,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:40:31,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:31,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:40:31,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:40:31,523 INFO L87 Difference]: Start difference. First operand 623 states and 1021 transitions. Second operand has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:40:31,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:31,608 INFO L93 Difference]: Finished difference Result 1088 states and 1802 transitions. [2022-12-13 14:40:31,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:40:31,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-12-13 14:40:31,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:31,610 INFO L225 Difference]: With dead ends: 1088 [2022-12-13 14:40:31,610 INFO L226 Difference]: Without dead ends: 643 [2022-12-13 14:40:31,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:40:31,612 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 177 mSDsluCounter, 4999 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 5851 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:31,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 5851 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:31,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-12-13 14:40:31,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 623. [2022-12-13 14:40:31,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 505 states have (on average 1.6633663366336633) internal successors, (840), 528 states have internal predecessors, (840), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-12-13 14:40:31,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1021 transitions. [2022-12-13 14:40:31,625 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1021 transitions. Word has length 112 [2022-12-13 14:40:31,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:31,625 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 1021 transitions. [2022-12-13 14:40:31,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:40:31,625 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1021 transitions. [2022-12-13 14:40:31,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 14:40:31,627 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:31,627 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] [2022-12-13 14:40:31,633 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 14:40:31,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 14:40:31,827 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:31,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:31,828 INFO L85 PathProgramCache]: Analyzing trace with hash -729912522, now seen corresponding path program 1 times [2022-12-13 14:40:31,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:31,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722132212] [2022-12-13 14:40:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:31,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 14:40:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:31,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:31,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 14:40:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 14:40:32,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,089 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 14:40:32,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:32,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722132212] [2022-12-13 14:40:32,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722132212] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:32,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769892750] [2022-12-13 14:40:32,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:32,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:32,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:32,090 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:32,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 14:40:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1773 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:40:32,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:32,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 14:40:32,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:32,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769892750] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:32,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:32,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 14:40:32,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706860195] [2022-12-13 14:40:32,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:32,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:32,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:32,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:32,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:40:32,339 INFO L87 Difference]: Start difference. First operand 623 states and 1021 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:32,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:32,377 INFO L93 Difference]: Finished difference Result 1140 states and 1887 transitions. [2022-12-13 14:40:32,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:40:32,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-12-13 14:40:32,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:32,380 INFO L225 Difference]: With dead ends: 1140 [2022-12-13 14:40:32,380 INFO L226 Difference]: Without dead ends: 623 [2022-12-13 14:40:32,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:40:32,383 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 23 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:32,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2569 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-12-13 14:40:32,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2022-12-13 14:40:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 505 states have (on average 1.6554455445544554) internal successors, (836), 528 states have internal predecessors, (836), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-12-13 14:40:32,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1017 transitions. [2022-12-13 14:40:32,403 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1017 transitions. Word has length 112 [2022-12-13 14:40:32,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:32,403 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 1017 transitions. [2022-12-13 14:40:32,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 2 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:32,403 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1017 transitions. [2022-12-13 14:40:32,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 14:40:32,405 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:32,405 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:32,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 14:40:32,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:32,606 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:32,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:32,606 INFO L85 PathProgramCache]: Analyzing trace with hash -410798027, now seen corresponding path program 1 times [2022-12-13 14:40:32,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:32,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324114552] [2022-12-13 14:40:32,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:32,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:32,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 14:40:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 14:40:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 14:40:32,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:32,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324114552] [2022-12-13 14:40:32,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324114552] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:32,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723951152] [2022-12-13 14:40:32,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:32,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:32,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:32,890 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:32,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 14:40:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:33,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1770 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 14:40:33,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:33,141 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:40:33,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:33,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723951152] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:33,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:33,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-12-13 14:40:33,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455432821] [2022-12-13 14:40:33,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:33,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:40:33,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:33,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:40:33,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:40:33,143 INFO L87 Difference]: Start difference. First operand 623 states and 1017 transitions. Second operand has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:40:33,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:33,240 INFO L93 Difference]: Finished difference Result 1088 states and 1799 transitions. [2022-12-13 14:40:33,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:40:33,241 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 113 [2022-12-13 14:40:33,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:33,243 INFO L225 Difference]: With dead ends: 1088 [2022-12-13 14:40:33,243 INFO L226 Difference]: Without dead ends: 643 [2022-12-13 14:40:33,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:40:33,245 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 185 mSDsluCounter, 4962 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 5808 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:33,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 5808 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:40:33,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2022-12-13 14:40:33,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 623. [2022-12-13 14:40:33,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 505 states have (on average 1.6554455445544554) internal successors, (836), 528 states have internal predecessors, (836), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-12-13 14:40:33,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 1017 transitions. [2022-12-13 14:40:33,257 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 1017 transitions. Word has length 113 [2022-12-13 14:40:33,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:33,258 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 1017 transitions. [2022-12-13 14:40:33,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:40:33,258 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 1017 transitions. [2022-12-13 14:40:33,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 14:40:33,259 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:33,259 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:33,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 14:40:33,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-13 14:40:33,460 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:33,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:33,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1082835020, now seen corresponding path program 1 times [2022-12-13 14:40:33,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:33,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473636557] [2022-12-13 14:40:33,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:33,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:33,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:33,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:33,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:33,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:33,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:33,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:33,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 14:40:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:33,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:33,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:33,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:40:33,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:33,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:33,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:33,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:33,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:33,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:33,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 14:40:33,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:33,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473636557] [2022-12-13 14:40:33,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473636557] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:33,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742756140] [2022-12-13 14:40:33,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:33,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:33,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:33,745 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:33,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 14:40:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:33,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 1771 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 14:40:33,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 14:40:33,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:33,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742756140] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:33,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:33,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 14:40:33,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698243834] [2022-12-13 14:40:33,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:33,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:33,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:33,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:33,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:40:33,952 INFO L87 Difference]: Start difference. First operand 623 states and 1017 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:33,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:33,990 INFO L93 Difference]: Finished difference Result 1196 states and 1969 transitions. [2022-12-13 14:40:33,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:40:33,991 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-12-13 14:40:33,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:33,993 INFO L225 Difference]: With dead ends: 1196 [2022-12-13 14:40:33,993 INFO L226 Difference]: Without dead ends: 659 [2022-12-13 14:40:33,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:40:33,994 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 38 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:33,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2545 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:33,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-12-13 14:40:34,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 647. [2022-12-13 14:40:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 529 states have (on average 1.6332703213610587) internal successors, (864), 552 states have internal predecessors, (864), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-12-13 14:40:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 1045 transitions. [2022-12-13 14:40:34,008 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 1045 transitions. Word has length 114 [2022-12-13 14:40:34,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:34,008 INFO L495 AbstractCegarLoop]: Abstraction has 647 states and 1045 transitions. [2022-12-13 14:40:34,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:34,008 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 1045 transitions. [2022-12-13 14:40:34,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 14:40:34,009 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:34,009 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:34,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-13 14:40:34,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-13 14:40:34,210 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:34,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:34,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1999920783, now seen corresponding path program 1 times [2022-12-13 14:40:34,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:34,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618745274] [2022-12-13 14:40:34,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:34,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:34,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:34,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:34,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:34,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 14:40:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:34,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:34,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:34,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:34,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:40:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:34,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:34,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:34,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 14:40:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:34,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:40:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 14:40:34,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:34,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618745274] [2022-12-13 14:40:34,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618745274] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:34,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601061865] [2022-12-13 14:40:34,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:34,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:34,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:34,489 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:34,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 14:40:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:34,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:40:34,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 14:40:34,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:34,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601061865] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:34,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:34,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 14:40:34,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354600342] [2022-12-13 14:40:34,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:34,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:34,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:34,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:34,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:40:34,697 INFO L87 Difference]: Start difference. First operand 647 states and 1045 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:34,821 INFO L93 Difference]: Finished difference Result 1206 states and 1998 transitions. [2022-12-13 14:40:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:40:34,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 114 [2022-12-13 14:40:34,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:34,827 INFO L225 Difference]: With dead ends: 1206 [2022-12-13 14:40:34,827 INFO L226 Difference]: Without dead ends: 766 [2022-12-13 14:40:34,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:40:34,829 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 215 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2728 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:34,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 2728 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:40:34,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-12-13 14:40:34,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 649. [2022-12-13 14:40:34,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 531 states have (on average 1.630885122410546) internal successors, (866), 554 states have internal predecessors, (866), 91 states have call successors, (91), 23 states have call predecessors, (91), 26 states have return successors, (90), 84 states have call predecessors, (90), 86 states have call successors, (90) [2022-12-13 14:40:34,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 1047 transitions. [2022-12-13 14:40:34,845 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 1047 transitions. Word has length 114 [2022-12-13 14:40:34,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:34,845 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 1047 transitions. [2022-12-13 14:40:34,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:34,845 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 1047 transitions. [2022-12-13 14:40:34,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 14:40:34,846 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:34,846 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:34,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 14:40:35,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 14:40:35,048 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:35,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1501589648, now seen corresponding path program 1 times [2022-12-13 14:40:35,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:35,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089029634] [2022-12-13 14:40:35,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:35,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:35,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:35,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:35,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:35,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 14:40:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:35,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:35,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:40:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:35,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:35,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:35,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:35,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:40:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:35,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 14:40:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 14:40:35,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:35,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089029634] [2022-12-13 14:40:35,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089029634] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:35,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230762925] [2022-12-13 14:40:35,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:35,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:35,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:35,417 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:35,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 14:40:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:35,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 14:40:35,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:35,704 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 14:40:35,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:35,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230762925] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:35,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:35,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2022-12-13 14:40:35,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62279760] [2022-12-13 14:40:35,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:35,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 14:40:35,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:35,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 14:40:35,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:40:35,710 INFO L87 Difference]: Start difference. First operand 649 states and 1047 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-12-13 14:40:38,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:38,172 INFO L93 Difference]: Finished difference Result 1919 states and 3217 transitions. [2022-12-13 14:40:38,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 14:40:38,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 117 [2022-12-13 14:40:38,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:38,179 INFO L225 Difference]: With dead ends: 1919 [2022-12-13 14:40:38,179 INFO L226 Difference]: Without dead ends: 1477 [2022-12-13 14:40:38,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-12-13 14:40:38,186 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 3911 mSDsluCounter, 3074 mSDsCounter, 0 mSdLazyCounter, 5454 mSolverCounterSat, 1096 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4028 SdHoareTripleChecker+Valid, 4061 SdHoareTripleChecker+Invalid, 6550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1096 IncrementalHoareTripleChecker+Valid, 5454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:38,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4028 Valid, 4061 Invalid, 6550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1096 Valid, 5454 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 14:40:38,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1477 states. [2022-12-13 14:40:38,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1477 to 1312. [2022-12-13 14:40:38,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1312 states, 1042 states have (on average 1.6343570057581573) internal successors, (1703), 1089 states have internal predecessors, (1703), 214 states have call successors, (214), 42 states have call predecessors, (214), 55 states have return successors, (247), 211 states have call predecessors, (247), 209 states have call successors, (247) [2022-12-13 14:40:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1312 states to 1312 states and 2164 transitions. [2022-12-13 14:40:38,222 INFO L78 Accepts]: Start accepts. Automaton has 1312 states and 2164 transitions. Word has length 117 [2022-12-13 14:40:38,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:38,222 INFO L495 AbstractCegarLoop]: Abstraction has 1312 states and 2164 transitions. [2022-12-13 14:40:38,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-12-13 14:40:38,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1312 states and 2164 transitions. [2022-12-13 14:40:38,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-13 14:40:38,225 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:38,225 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:38,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 14:40:38,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:38,425 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:38,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:38,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1475180125, now seen corresponding path program 1 times [2022-12-13 14:40:38,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:38,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316342172] [2022-12-13 14:40:38,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:38,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:38,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:38,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:38,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:38,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 14:40:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:38,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:38,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:38,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:40:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:38,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:38,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:38,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:38,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 14:40:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-12-13 14:40:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:38,743 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 14:40:38,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:38,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316342172] [2022-12-13 14:40:38,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316342172] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:38,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358404810] [2022-12-13 14:40:38,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:38,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:38,744 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:38,745 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:38,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 14:40:38,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:38,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:40:38,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:38,995 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 14:40:38,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:38,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358404810] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:38,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:38,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-12-13 14:40:38,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132946915] [2022-12-13 14:40:38,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:38,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:40:38,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:38,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:40:38,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:40:38,996 INFO L87 Difference]: Start difference. First operand 1312 states and 2164 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:40:39,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:39,305 INFO L93 Difference]: Finished difference Result 3251 states and 5504 transitions. [2022-12-13 14:40:39,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:40:39,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 118 [2022-12-13 14:40:39,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:39,314 INFO L225 Difference]: With dead ends: 3251 [2022-12-13 14:40:39,314 INFO L226 Difference]: Without dead ends: 2258 [2022-12-13 14:40:39,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:40:39,318 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 715 mSDsluCounter, 3367 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 4710 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:39,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 4710 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:40:39,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2022-12-13 14:40:39,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2239. [2022-12-13 14:40:39,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2239 states, 1751 states have (on average 1.6436322101656196) internal successors, (2878), 1832 states have internal predecessors, (2878), 393 states have call successors, (393), 76 states have call predecessors, (393), 94 states have return successors, (464), 392 states have call predecessors, (464), 388 states have call successors, (464) [2022-12-13 14:40:39,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 3735 transitions. [2022-12-13 14:40:39,383 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 3735 transitions. Word has length 118 [2022-12-13 14:40:39,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:39,383 INFO L495 AbstractCegarLoop]: Abstraction has 2239 states and 3735 transitions. [2022-12-13 14:40:39,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:40:39,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 3735 transitions. [2022-12-13 14:40:39,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-12-13 14:40:39,390 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:39,390 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:39,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 14:40:39,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:39,591 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:39,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:39,593 INFO L85 PathProgramCache]: Analyzing trace with hash -56090062, now seen corresponding path program 1 times [2022-12-13 14:40:39,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:39,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051057820] [2022-12-13 14:40:39,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:39,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:39,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:39,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:39,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:39,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 14:40:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:39,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:39,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 14:40:39,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:39,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:39,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:39,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:40:39,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:40,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 14:40:40,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:40,004 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 14:40:40,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:40,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051057820] [2022-12-13 14:40:40,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051057820] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:40,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617517075] [2022-12-13 14:40:40,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:40,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:40,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:40,005 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:40,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 14:40:40,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:40,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1792 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 14:40:40,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 14:40:40,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:40,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617517075] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:40,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:40,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-12-13 14:40:40,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017723567] [2022-12-13 14:40:40,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:40,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:40,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:40,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:40,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:40:40,186 INFO L87 Difference]: Start difference. First operand 2239 states and 3735 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:40,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:40,260 INFO L93 Difference]: Finished difference Result 4334 states and 7272 transitions. [2022-12-13 14:40:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:40:40,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 120 [2022-12-13 14:40:40,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:40,269 INFO L225 Difference]: With dead ends: 4334 [2022-12-13 14:40:40,269 INFO L226 Difference]: Without dead ends: 2293 [2022-12-13 14:40:40,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:40:40,276 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 39 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2542 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:40,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 2542 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:40,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2022-12-13 14:40:40,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 2260. [2022-12-13 14:40:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 1771 states have (on average 1.6431394692264258) internal successors, (2910), 1853 states have internal predecessors, (2910), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2022-12-13 14:40:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 3768 transitions. [2022-12-13 14:40:40,365 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 3768 transitions. Word has length 120 [2022-12-13 14:40:40,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:40,365 INFO L495 AbstractCegarLoop]: Abstraction has 2260 states and 3768 transitions. [2022-12-13 14:40:40,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 14:40:40,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 3768 transitions. [2022-12-13 14:40:40,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 14:40:40,369 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:40,370 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:40,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 14:40:40,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-13 14:40:40,570 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:40,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:40,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1463812881, now seen corresponding path program 1 times [2022-12-13 14:40:40,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:40,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031128670] [2022-12-13 14:40:40,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:40,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:40,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:40,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:40,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:40,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:40,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 14:40:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:40,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:40,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:40,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:40:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:40,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:40,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:40,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:40:40,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:40,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 14:40:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 14:40:40,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:40,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031128670] [2022-12-13 14:40:40,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031128670] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:40,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548363047] [2022-12-13 14:40:40,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:40,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:40,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:40,960 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:40,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 14:40:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:41,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 14:40:41,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:41,218 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 14:40:41,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:41,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548363047] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:41,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:41,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-12-13 14:40:41,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578731855] [2022-12-13 14:40:41,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:41,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:40:41,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:41,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:40:41,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-12-13 14:40:41,219 INFO L87 Difference]: Start difference. First operand 2260 states and 3768 transitions. Second operand has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:40:41,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:41,361 INFO L93 Difference]: Finished difference Result 4264 states and 7152 transitions. [2022-12-13 14:40:41,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:40:41,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 121 [2022-12-13 14:40:41,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:41,370 INFO L225 Difference]: With dead ends: 4264 [2022-12-13 14:40:41,370 INFO L226 Difference]: Without dead ends: 2333 [2022-12-13 14:40:41,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-12-13 14:40:41,377 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 175 mSDsluCounter, 4972 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 5818 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:41,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 5818 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:40:41,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2333 states. [2022-12-13 14:40:41,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2333 to 2260. [2022-12-13 14:40:41,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 1771 states have (on average 1.64257481648786) internal successors, (2909), 1853 states have internal predecessors, (2909), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2022-12-13 14:40:41,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 3767 transitions. [2022-12-13 14:40:41,434 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 3767 transitions. Word has length 121 [2022-12-13 14:40:41,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:41,434 INFO L495 AbstractCegarLoop]: Abstraction has 2260 states and 3767 transitions. [2022-12-13 14:40:41,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 3 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-12-13 14:40:41,435 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 3767 transitions. [2022-12-13 14:40:41,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 14:40:41,439 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:41,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:41,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-13 14:40:41,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:41,640 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:41,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:41,640 INFO L85 PathProgramCache]: Analyzing trace with hash -669730285, now seen corresponding path program 1 times [2022-12-13 14:40:41,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:41,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515754451] [2022-12-13 14:40:41,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:41,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:41,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:41,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:41,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:41,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:41,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 14:40:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:41,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:41,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:42,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:40:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:42,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:42,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:42,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:40:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:42,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 14:40:42,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:42,074 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 14:40:42,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:42,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515754451] [2022-12-13 14:40:42,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515754451] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:42,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060734311] [2022-12-13 14:40:42,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:42,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:42,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:42,076 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:42,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 14:40:42,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:42,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 1793 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:40:42,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:42,365 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 14:40:42,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:42,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060734311] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:42,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:42,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-12-13 14:40:42,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605041603] [2022-12-13 14:40:42,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:42,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:40:42,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:42,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:40:42,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-13 14:40:42,366 INFO L87 Difference]: Start difference. First operand 2260 states and 3767 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-12-13 14:40:42,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:42,644 INFO L93 Difference]: Finished difference Result 2473 states and 4121 transitions. [2022-12-13 14:40:42,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:40:42,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 121 [2022-12-13 14:40:42,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:42,655 INFO L225 Difference]: With dead ends: 2473 [2022-12-13 14:40:42,655 INFO L226 Difference]: Without dead ends: 2456 [2022-12-13 14:40:42,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-13 14:40:42,657 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 851 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:42,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 2244 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:40:42,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2022-12-13 14:40:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 2278. [2022-12-13 14:40:42,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 1789 states have (on average 1.636109558412521) internal successors, (2927), 1871 states have internal predecessors, (2927), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2022-12-13 14:40:42,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 3785 transitions. [2022-12-13 14:40:42,734 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 3785 transitions. Word has length 121 [2022-12-13 14:40:42,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:42,734 INFO L495 AbstractCegarLoop]: Abstraction has 2278 states and 3785 transitions. [2022-12-13 14:40:42,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-12-13 14:40:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 3785 transitions. [2022-12-13 14:40:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-13 14:40:42,741 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:42,741 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:42,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-13 14:40:42,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:42,941 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:42,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:42,941 INFO L85 PathProgramCache]: Analyzing trace with hash -209028082, now seen corresponding path program 1 times [2022-12-13 14:40:42,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:42,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268261403] [2022-12-13 14:40:42,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:42,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:42,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:43,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:43,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:43,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:43,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:43,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 14:40:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:43,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:43,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:43,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:40:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:43,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:43,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:43,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:40:43,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:43,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 14:40:43,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:43,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 14:40:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:43,324 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 14:40:43,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:43,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268261403] [2022-12-13 14:40:43,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268261403] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:43,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013515037] [2022-12-13 14:40:43,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:43,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:43,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:43,326 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:43,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 14:40:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:43,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 14:40:43,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:43,537 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 14:40:43,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:43,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013515037] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:43,537 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:43,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-12-13 14:40:43,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154395558] [2022-12-13 14:40:43,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:43,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:40:43,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:43,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:40:43,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-12-13 14:40:43,538 INFO L87 Difference]: Start difference. First operand 2278 states and 3785 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 14:40:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:43,591 INFO L93 Difference]: Finished difference Result 2307 states and 3823 transitions. [2022-12-13 14:40:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 14:40:43,591 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 127 [2022-12-13 14:40:43,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:43,600 INFO L225 Difference]: With dead ends: 2307 [2022-12-13 14:40:43,600 INFO L226 Difference]: Without dead ends: 2290 [2022-12-13 14:40:43,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:40:43,602 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 37 mSDsluCounter, 2563 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3434 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:43,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3434 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:43,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2290 states. [2022-12-13 14:40:43,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2290 to 2278. [2022-12-13 14:40:43,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 1789 states have (on average 1.6327557294577977) internal successors, (2921), 1871 states have internal predecessors, (2921), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2022-12-13 14:40:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 3779 transitions. [2022-12-13 14:40:43,675 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 3779 transitions. Word has length 127 [2022-12-13 14:40:43,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:43,675 INFO L495 AbstractCegarLoop]: Abstraction has 2278 states and 3779 transitions. [2022-12-13 14:40:43,675 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, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 14:40:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 3779 transitions. [2022-12-13 14:40:43,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 14:40:43,680 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:43,680 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:43,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 14:40:43,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:43,881 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:43,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:43,882 INFO L85 PathProgramCache]: Analyzing trace with hash -843832650, now seen corresponding path program 1 times [2022-12-13 14:40:43,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:43,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375994636] [2022-12-13 14:40:43,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:43,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:44,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:44,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:44,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:44,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 14:40:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:44,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:44,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:44,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:44,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:40:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:44,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:44,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:44,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:40:44,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:44,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 14:40:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:44,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 14:40:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:44,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 14:40:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:44,318 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-12-13 14:40:44,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:44,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375994636] [2022-12-13 14:40:44,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375994636] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:44,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84473193] [2022-12-13 14:40:44,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:44,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:44,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:44,319 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:44,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 14:40:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:44,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 1846 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 14:40:44,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:40:44,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:44,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84473193] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:44,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:44,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 14 [2022-12-13 14:40:44,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830000430] [2022-12-13 14:40:44,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:44,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:40:44,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:44,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:40:44,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:40:44,532 INFO L87 Difference]: Start difference. First operand 2278 states and 3779 transitions. Second operand has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 14:40:44,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:44,626 INFO L93 Difference]: Finished difference Result 4414 states and 7354 transitions. [2022-12-13 14:40:44,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:40:44,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 138 [2022-12-13 14:40:44,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:44,639 INFO L225 Difference]: With dead ends: 4414 [2022-12-13 14:40:44,639 INFO L226 Difference]: Without dead ends: 2361 [2022-12-13 14:40:44,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-12-13 14:40:44,649 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 167 mSDsluCounter, 4152 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 5008 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:44,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 5008 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:44,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2022-12-13 14:40:44,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 2278. [2022-12-13 14:40:44,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2278 states, 1789 states have (on average 1.6327557294577977) internal successors, (2921), 1871 states have internal predecessors, (2921), 393 states have call successors, (393), 76 states have call predecessors, (393), 95 states have return successors, (465), 392 states have call predecessors, (465), 388 states have call successors, (465) [2022-12-13 14:40:44,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2278 states to 2278 states and 3779 transitions. [2022-12-13 14:40:44,715 INFO L78 Accepts]: Start accepts. Automaton has 2278 states and 3779 transitions. Word has length 138 [2022-12-13 14:40:44,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:44,715 INFO L495 AbstractCegarLoop]: Abstraction has 2278 states and 3779 transitions. [2022-12-13 14:40:44,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 18.0) internal successors, (108), 6 states have internal predecessors, (108), 3 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 14:40:44,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2278 states and 3779 transitions. [2022-12-13 14:40:44,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-12-13 14:40:44,720 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:44,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:44,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 14:40:44,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 14:40:44,921 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:44,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:44,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1675829758, now seen corresponding path program 1 times [2022-12-13 14:40:44,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:44,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561290185] [2022-12-13 14:40:44,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:44,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:44,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:45,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 14:40:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:40:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:40:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 14:40:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 14:40:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 14:40:45,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,224 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-13 14:40:45,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:45,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561290185] [2022-12-13 14:40:45,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561290185] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:45,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191764674] [2022-12-13 14:40:45,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:45,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:45,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:45,225 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:45,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 14:40:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 1847 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 14:40:45,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 14:40:45,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:45,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191764674] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:45,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:45,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 14:40:45,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967692639] [2022-12-13 14:40:45,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:45,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:45,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:45,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:45,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:40:45,419 INFO L87 Difference]: Start difference. First operand 2278 states and 3779 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 14:40:45,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:45,494 INFO L93 Difference]: Finished difference Result 4418 states and 7360 transitions. [2022-12-13 14:40:45,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:40:45,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 138 [2022-12-13 14:40:45,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:45,505 INFO L225 Difference]: With dead ends: 4418 [2022-12-13 14:40:45,506 INFO L226 Difference]: Without dead ends: 2108 [2022-12-13 14:40:45,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:40:45,512 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 11 mSDsluCounter, 1709 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:45,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2568 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:45,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2022-12-13 14:40:45,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2108. [2022-12-13 14:40:45,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 1634 states have (on average 1.6401468788249693) internal successors, (2680), 1710 states have internal predecessors, (2680), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2022-12-13 14:40:45,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3519 transitions. [2022-12-13 14:40:45,570 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3519 transitions. Word has length 138 [2022-12-13 14:40:45,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:45,570 INFO L495 AbstractCegarLoop]: Abstraction has 2108 states and 3519 transitions. [2022-12-13 14:40:45,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 14:40:45,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3519 transitions. [2022-12-13 14:40:45,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-13 14:40:45,575 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:45,575 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:45,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-12-13 14:40:45,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 14:40:45,777 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:45,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:45,778 INFO L85 PathProgramCache]: Analyzing trace with hash -257141349, now seen corresponding path program 1 times [2022-12-13 14:40:45,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:45,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509677189] [2022-12-13 14:40:45,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:45,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:45,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 14:40:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:45,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:45,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:46,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 14:40:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:46,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:46,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:46,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:46,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:40:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:46,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 14:40:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:46,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 14:40:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:46,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 14:40:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 14:40:46,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:46,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509677189] [2022-12-13 14:40:46,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509677189] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:46,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363645855] [2022-12-13 14:40:46,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:46,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:46,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:46,095 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:46,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-13 14:40:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:46,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:40:46,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:46,288 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 14:40:46,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:46,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363645855] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:46,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:46,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 14:40:46,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680033809] [2022-12-13 14:40:46,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:46,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:40:46,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:46,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:40:46,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:40:46,289 INFO L87 Difference]: Start difference. First operand 2108 states and 3519 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2022-12-13 14:40:46,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:46,398 INFO L93 Difference]: Finished difference Result 4185 states and 7004 transitions. [2022-12-13 14:40:46,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:40:46,400 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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 140 [2022-12-13 14:40:46,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:46,409 INFO L225 Difference]: With dead ends: 4185 [2022-12-13 14:40:46,409 INFO L226 Difference]: Without dead ends: 2108 [2022-12-13 14:40:46,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:40:46,415 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 176 mSDsluCounter, 1583 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2401 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:46,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2401 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:40:46,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2108 states. [2022-12-13 14:40:46,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2108 to 2108. [2022-12-13 14:40:46,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 1634 states have (on average 1.6395348837209303) internal successors, (2679), 1710 states have internal predecessors, (2679), 388 states have call successors, (388), 73 states have call predecessors, (388), 85 states have return successors, (451), 386 states have call predecessors, (451), 383 states have call successors, (451) [2022-12-13 14:40:46,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 3518 transitions. [2022-12-13 14:40:46,496 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 3518 transitions. Word has length 140 [2022-12-13 14:40:46,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:46,496 INFO L495 AbstractCegarLoop]: Abstraction has 2108 states and 3518 transitions. [2022-12-13 14:40:46,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 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) [2022-12-13 14:40:46,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 3518 transitions. [2022-12-13 14:40:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 14:40:46,500 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:46,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:46,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-12-13 14:40:46,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 14:40:46,700 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:46,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:46,701 INFO L85 PathProgramCache]: Analyzing trace with hash 928289724, now seen corresponding path program 1 times [2022-12-13 14:40:46,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:46,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188853872] [2022-12-13 14:40:46,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:46,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:46,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:46,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:46,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:46,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:46,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:40:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:46,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:46,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:47,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 14:40:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:47,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:47,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:47,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:47,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:40:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:47,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 14:40:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 14:40:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:47,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 14:40:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:47,089 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 14:40:47,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:47,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188853872] [2022-12-13 14:40:47,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188853872] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:47,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:40:47,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 14:40:47,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080625599] [2022-12-13 14:40:47,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:47,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 14:40:47,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:47,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 14:40:47,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:40:47,091 INFO L87 Difference]: Start difference. First operand 2108 states and 3518 transitions. Second operand has 10 states, 10 states have (on average 10.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 14:40:53,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:53,128 INFO L93 Difference]: Finished difference Result 5538 states and 9671 transitions. [2022-12-13 14:40:53,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-13 14:40:53,128 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 141 [2022-12-13 14:40:53,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:53,143 INFO L225 Difference]: With dead ends: 5538 [2022-12-13 14:40:53,143 INFO L226 Difference]: Without dead ends: 3476 [2022-12-13 14:40:53,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2022-12-13 14:40:53,149 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 1141 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 5729 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1210 SdHoareTripleChecker+Valid, 3446 SdHoareTripleChecker+Invalid, 6012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:53,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1210 Valid, 3446 Invalid, 6012 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [283 Valid, 5729 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-12-13 14:40:53,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3476 states. [2022-12-13 14:40:53,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3476 to 2188. [2022-12-13 14:40:53,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1698 states have (on average 1.6330977620730271) internal successors, (2773), 1774 states have internal predecessors, (2773), 398 states have call successors, (398), 73 states have call predecessors, (398), 91 states have return successors, (478), 400 states have call predecessors, (478), 393 states have call successors, (478) [2022-12-13 14:40:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3649 transitions. [2022-12-13 14:40:53,508 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3649 transitions. Word has length 141 [2022-12-13 14:40:53,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:53,508 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3649 transitions. [2022-12-13 14:40:53,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.5) internal successors, (105), 6 states have internal predecessors, (105), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 14:40:53,508 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3649 transitions. [2022-12-13 14:40:53,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-12-13 14:40:53,513 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:53,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:53,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-12-13 14:40:53,513 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:53,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:53,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1357402850, now seen corresponding path program 1 times [2022-12-13 14:40:53,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:53,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955250516] [2022-12-13 14:40:53,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:53,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:53,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:53,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:53,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:53,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:53,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:40:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:53,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:53,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:53,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 14:40:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:53,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:53,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:53,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 14:40:53,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:53,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 14:40:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:53,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 14:40:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:53,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 14:40:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 14:40:53,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:53,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955250516] [2022-12-13 14:40:53,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955250516] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:53,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:40:53,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:40:53,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401911449] [2022-12-13 14:40:53,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:53,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:40:53,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:53,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:40:53,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:40:53,787 INFO L87 Difference]: Start difference. First operand 2188 states and 3649 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 14:40:59,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:40:59,213 INFO L93 Difference]: Finished difference Result 3713 states and 6275 transitions. [2022-12-13 14:40:59,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:40:59,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 5 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 145 [2022-12-13 14:40:59,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:40:59,218 INFO L225 Difference]: With dead ends: 3713 [2022-12-13 14:40:59,219 INFO L226 Difference]: Without dead ends: 1539 [2022-12-13 14:40:59,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:40:59,222 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 951 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 3173 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1022 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 3173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:40:59,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1022 Valid, 1836 Invalid, 3412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 3173 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-12-13 14:40:59,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2022-12-13 14:40:59,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1009. [2022-12-13 14:40:59,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 803 states have (on average 1.6276463262764633) internal successors, (1307), 836 states have internal predecessors, (1307), 163 states have call successors, (163), 40 states have call predecessors, (163), 42 states have return successors, (175), 157 states have call predecessors, (175), 158 states have call successors, (175) [2022-12-13 14:40:59,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1645 transitions. [2022-12-13 14:40:59,374 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1645 transitions. Word has length 145 [2022-12-13 14:40:59,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:40:59,375 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1645 transitions. [2022-12-13 14:40:59,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 14:40:59,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1645 transitions. [2022-12-13 14:40:59,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-12-13 14:40:59,377 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:40:59,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:40:59,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 14:40:59,377 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:40:59,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:40:59,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1047019678, now seen corresponding path program 1 times [2022-12-13 14:40:59,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:40:59,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736928338] [2022-12-13 14:40:59,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:59,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:40:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:59,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:40:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:59,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:59,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:40:59,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:59,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:40:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:59,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:40:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:59,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:40:59,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:59,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:59,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:40:59,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:59,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:40:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:59,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 14:40:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:59,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 14:40:59,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:59,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 14:40:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:59,763 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 14:40:59,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:40:59,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736928338] [2022-12-13 14:40:59,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736928338] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:40:59,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012157959] [2022-12-13 14:40:59,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:40:59,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:40:59,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:40:59,764 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:40:59,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-13 14:40:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:40:59,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:40:59,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:40:59,990 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 14:40:59,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:40:59,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012157959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:40:59,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:40:59,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2022-12-13 14:40:59,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177736411] [2022-12-13 14:40:59,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:40:59,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:40:59,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:40:59,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:40:59,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:40:59,992 INFO L87 Difference]: Start difference. First operand 1009 states and 1645 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-12-13 14:41:00,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:41:00,416 INFO L93 Difference]: Finished difference Result 2661 states and 4427 transitions. [2022-12-13 14:41:00,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:41:00,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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 146 [2022-12-13 14:41:00,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:41:00,424 INFO L225 Difference]: With dead ends: 2661 [2022-12-13 14:41:00,425 INFO L226 Difference]: Without dead ends: 1769 [2022-12-13 14:41:00,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:41:00,427 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 780 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:41:00,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1662 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:41:00,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2022-12-13 14:41:00,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1754. [2022-12-13 14:41:00,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1754 states, 1381 states have (on average 1.6278059377262852) internal successors, (2248), 1439 states have internal predecessors, (2248), 298 states have call successors, (298), 72 states have call predecessors, (298), 74 states have return successors, (331), 291 states have call predecessors, (331), 293 states have call successors, (331) [2022-12-13 14:41:00,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1754 states to 1754 states and 2877 transitions. [2022-12-13 14:41:00,712 INFO L78 Accepts]: Start accepts. Automaton has 1754 states and 2877 transitions. Word has length 146 [2022-12-13 14:41:00,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:41:00,712 INFO L495 AbstractCegarLoop]: Abstraction has 1754 states and 2877 transitions. [2022-12-13 14:41:00,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-12-13 14:41:00,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1754 states and 2877 transitions. [2022-12-13 14:41:00,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-13 14:41:00,714 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:41:00,714 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:41:00,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-12-13 14:41:00,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:41:00,914 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:41:00,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:41:00,915 INFO L85 PathProgramCache]: Analyzing trace with hash -322581296, now seen corresponding path program 1 times [2022-12-13 14:41:00,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:41:00,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092623593] [2022-12-13 14:41:00,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:00,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:41:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:41:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:41:01,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:41:01,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:41:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:41:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:41:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:41:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 14:41:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 14:41:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 14:41:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 14:41:01,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:41:01,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092623593] [2022-12-13 14:41:01,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092623593] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:41:01,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518672889] [2022-12-13 14:41:01,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:01,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:41:01,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:41:01,309 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:41:01,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-13 14:41:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:01,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 1873 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:41:01,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:41:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 14:41:01,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:41:01,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518672889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:41:01,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:41:01,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2022-12-13 14:41:01,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870592063] [2022-12-13 14:41:01,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:41:01,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:41:01,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:41:01,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:41:01,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:41:01,529 INFO L87 Difference]: Start difference. First operand 1754 states and 2877 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 14:41:02,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:41:02,168 INFO L93 Difference]: Finished difference Result 4887 states and 8147 transitions. [2022-12-13 14:41:02,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:41:02,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 151 [2022-12-13 14:41:02,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:41:02,179 INFO L225 Difference]: With dead ends: 4887 [2022-12-13 14:41:02,179 INFO L226 Difference]: Without dead ends: 3263 [2022-12-13 14:41:02,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:41:02,183 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 841 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:41:02,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1508 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:41:02,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2022-12-13 14:41:02,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 3245. [2022-12-13 14:41:02,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3245 states, 2538 states have (on average 1.64026792750197) internal successors, (4163), 2650 states have internal predecessors, (4163), 568 states have call successors, (568), 136 states have call predecessors, (568), 138 states have return successors, (656), 556 states have call predecessors, (656), 563 states have call successors, (656) [2022-12-13 14:41:02,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3245 states to 3245 states and 5387 transitions. [2022-12-13 14:41:02,694 INFO L78 Accepts]: Start accepts. Automaton has 3245 states and 5387 transitions. Word has length 151 [2022-12-13 14:41:02,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:41:02,694 INFO L495 AbstractCegarLoop]: Abstraction has 3245 states and 5387 transitions. [2022-12-13 14:41:02,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 14:41:02,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3245 states and 5387 transitions. [2022-12-13 14:41:02,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-13 14:41:02,696 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:41:02,696 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:41:02,702 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-12-13 14:41:02,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:41:02,897 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:41:02,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:41:02,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1497842484, now seen corresponding path program 1 times [2022-12-13 14:41:02,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:41:02,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97194086] [2022-12-13 14:41:02,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:02,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:41:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:41:03,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:41:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:41:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:41:03,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:41:03,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:41:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:41:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 14:41:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 14:41:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 14:41:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 14:41:03,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:41:03,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97194086] [2022-12-13 14:41:03,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97194086] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:41:03,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180435986] [2022-12-13 14:41:03,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:03,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:41:03,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:41:03,391 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:41:03,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-13 14:41:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:03,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 1877 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 14:41:03,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:41:03,671 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 14:41:03,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:41:03,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180435986] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:41:03,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:41:03,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 20 [2022-12-13 14:41:03,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319571149] [2022-12-13 14:41:03,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:41:03,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:41:03,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:41:03,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:41:03,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2022-12-13 14:41:03,673 INFO L87 Difference]: Start difference. First operand 3245 states and 5387 transitions. Second operand has 8 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 14:41:04,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:41:04,310 INFO L93 Difference]: Finished difference Result 6376 states and 10627 transitions. [2022-12-13 14:41:04,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:41:04,311 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 154 [2022-12-13 14:41:04,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:41:04,321 INFO L225 Difference]: With dead ends: 6376 [2022-12-13 14:41:04,321 INFO L226 Difference]: Without dead ends: 3239 [2022-12-13 14:41:04,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=450, Unknown=0, NotChecked=0, Total=506 [2022-12-13 14:41:04,327 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 144 mSDsluCounter, 4892 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 5722 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:41:04,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 5722 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:41:04,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3239 states. [2022-12-13 14:41:04,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3239 to 3239. [2022-12-13 14:41:04,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3239 states, 2532 states have (on average 1.6409952606635072) internal successors, (4155), 2644 states have internal predecessors, (4155), 568 states have call successors, (568), 136 states have call predecessors, (568), 138 states have return successors, (656), 556 states have call predecessors, (656), 563 states have call successors, (656) [2022-12-13 14:41:04,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3239 states to 3239 states and 5379 transitions. [2022-12-13 14:41:04,890 INFO L78 Accepts]: Start accepts. Automaton has 3239 states and 5379 transitions. Word has length 154 [2022-12-13 14:41:04,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:41:04,890 INFO L495 AbstractCegarLoop]: Abstraction has 3239 states and 5379 transitions. [2022-12-13 14:41:04,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.0) internal successors, (119), 7 states have internal predecessors, (119), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 14:41:04,891 INFO L276 IsEmpty]: Start isEmpty. Operand 3239 states and 5379 transitions. [2022-12-13 14:41:04,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-13 14:41:04,892 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:41:04,893 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:41:04,898 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-12-13 14:41:05,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:41:05,094 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:41:05,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:41:05,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1133558802, now seen corresponding path program 1 times [2022-12-13 14:41:05,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:41:05,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657320376] [2022-12-13 14:41:05,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:05,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:41:05,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:41:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:41:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:41:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:05,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:41:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:41:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:41:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:41:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 14:41:05,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 14:41:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 14:41:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 14:41:05,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:41:05,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657320376] [2022-12-13 14:41:05,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657320376] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:41:05,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882414851] [2022-12-13 14:41:05,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:05,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:41:05,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:41:05,574 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:41:05,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-13 14:41:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:05,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 1880 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 14:41:05,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:41:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 14:41:05,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:41:05,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882414851] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:41:05,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:41:05,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-12-13 14:41:05,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651516429] [2022-12-13 14:41:05,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:41:05,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:41:05,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:41:05,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:41:05,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:41:05,842 INFO L87 Difference]: Start difference. First operand 3239 states and 5379 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 14:41:06,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:41:06,364 INFO L93 Difference]: Finished difference Result 6444 states and 10723 transitions. [2022-12-13 14:41:06,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:41:06,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 154 [2022-12-13 14:41:06,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:41:06,374 INFO L225 Difference]: With dead ends: 6444 [2022-12-13 14:41:06,375 INFO L226 Difference]: Without dead ends: 3257 [2022-12-13 14:41:06,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-12-13 14:41:06,381 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 28 mSDsluCounter, 1665 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:41:06,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2503 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:41:06,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3257 states. [2022-12-13 14:41:06,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3257 to 3247. [2022-12-13 14:41:06,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3247 states, 2540 states have (on average 1.638976377952756) internal successors, (4163), 2652 states have internal predecessors, (4163), 568 states have call successors, (568), 136 states have call predecessors, (568), 138 states have return successors, (656), 556 states have call predecessors, (656), 563 states have call successors, (656) [2022-12-13 14:41:06,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 5387 transitions. [2022-12-13 14:41:06,962 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 5387 transitions. Word has length 154 [2022-12-13 14:41:06,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:41:06,963 INFO L495 AbstractCegarLoop]: Abstraction has 3247 states and 5387 transitions. [2022-12-13 14:41:06,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 14:41:06,963 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 5387 transitions. [2022-12-13 14:41:06,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-13 14:41:06,965 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:41:06,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:41:06,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-12-13 14:41:07,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:41:07,166 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:41:07,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:41:07,167 INFO L85 PathProgramCache]: Analyzing trace with hash 688316148, now seen corresponding path program 1 times [2022-12-13 14:41:07,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:41:07,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331173776] [2022-12-13 14:41:07,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:07,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:41:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:41:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:41:07,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:41:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:41:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:41:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:07,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:41:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:41:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 14:41:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 14:41:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 14:41:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 14:41:07,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:41:07,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331173776] [2022-12-13 14:41:07,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331173776] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:41:07,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952108190] [2022-12-13 14:41:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:07,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:41:07,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:41:07,610 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:41:07,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-13 14:41:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:07,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 1884 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:41:07,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:41:07,878 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 14:41:07,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:41:07,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952108190] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:41:07,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:41:07,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-12-13 14:41:07,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148459500] [2022-12-13 14:41:07,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:41:07,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:41:07,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:41:07,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:41:07,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:41:07,879 INFO L87 Difference]: Start difference. First operand 3247 states and 5387 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 14:41:08,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:41:08,476 INFO L93 Difference]: Finished difference Result 5831 states and 9763 transitions. [2022-12-13 14:41:08,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:41:08,477 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), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 154 [2022-12-13 14:41:08,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:41:08,486 INFO L225 Difference]: With dead ends: 5831 [2022-12-13 14:41:08,486 INFO L226 Difference]: Without dead ends: 3247 [2022-12-13 14:41:08,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-12-13 14:41:08,491 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 329 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:41:08,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 2377 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:41:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3247 states. [2022-12-13 14:41:08,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3247 to 3247. [2022-12-13 14:41:08,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3247 states, 2540 states have (on average 1.632283464566929) internal successors, (4146), 2652 states have internal predecessors, (4146), 568 states have call successors, (568), 136 states have call predecessors, (568), 138 states have return successors, (656), 556 states have call predecessors, (656), 563 states have call successors, (656) [2022-12-13 14:41:08,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 5370 transitions. [2022-12-13 14:41:08,988 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 5370 transitions. Word has length 154 [2022-12-13 14:41:08,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:41:08,988 INFO L495 AbstractCegarLoop]: Abstraction has 3247 states and 5370 transitions. [2022-12-13 14:41:08,988 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), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 14:41:08,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 5370 transitions. [2022-12-13 14:41:08,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 14:41:08,990 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:41:08,990 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:41:08,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-12-13 14:41:09,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:41:09,191 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:41:09,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:41:09,192 INFO L85 PathProgramCache]: Analyzing trace with hash 930124588, now seen corresponding path program 1 times [2022-12-13 14:41:09,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:41:09,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020802132] [2022-12-13 14:41:09,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:09,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:41:09,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:41:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:41:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:41:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:41:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:41:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:09,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:41:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 14:41:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 14:41:09,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 14:41:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 14:41:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 14:41:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 14:41:09,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:41:09,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020802132] [2022-12-13 14:41:09,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020802132] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:41:09,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:41:09,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 14:41:09,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612930714] [2022-12-13 14:41:09,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:41:09,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 14:41:09,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:41:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 14:41:09,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:41:09,670 INFO L87 Difference]: Start difference. First operand 3247 states and 5370 transitions. Second operand has 11 states, 10 states have (on average 11.0) internal successors, (110), 7 states have internal predecessors, (110), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 14:41:21,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:41:21,532 INFO L93 Difference]: Finished difference Result 8850 states and 15813 transitions. [2022-12-13 14:41:21,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 14:41:21,533 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.0) internal successors, (110), 7 states have internal predecessors, (110), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 156 [2022-12-13 14:41:21,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:41:21,555 INFO L225 Difference]: With dead ends: 8850 [2022-12-13 14:41:21,556 INFO L226 Difference]: Without dead ends: 6399 [2022-12-13 14:41:21,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=221, Invalid=835, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 14:41:21,563 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 4327 mSDsluCounter, 3210 mSDsCounter, 0 mSdLazyCounter, 7314 mSolverCounterSat, 1530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4387 SdHoareTripleChecker+Valid, 3733 SdHoareTripleChecker+Invalid, 8844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1530 IncrementalHoareTripleChecker+Valid, 7314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:41:21,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4387 Valid, 3733 Invalid, 8844 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1530 Valid, 7314 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-12-13 14:41:21,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6399 states. [2022-12-13 14:41:22,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6399 to 4372. [2022-12-13 14:41:22,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4372 states, 3416 states have (on average 1.620608899297424) internal successors, (5536), 3573 states have internal predecessors, (5536), 747 states have call successors, (747), 181 states have call predecessors, (747), 208 states have return successors, (951), 737 states have call predecessors, (951), 742 states have call successors, (951) [2022-12-13 14:41:22,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4372 states to 4372 states and 7234 transitions. [2022-12-13 14:41:22,362 INFO L78 Accepts]: Start accepts. Automaton has 4372 states and 7234 transitions. Word has length 156 [2022-12-13 14:41:22,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:41:22,362 INFO L495 AbstractCegarLoop]: Abstraction has 4372 states and 7234 transitions. [2022-12-13 14:41:22,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.0) internal successors, (110), 7 states have internal predecessors, (110), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 14:41:22,362 INFO L276 IsEmpty]: Start isEmpty. Operand 4372 states and 7234 transitions. [2022-12-13 14:41:22,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-12-13 14:41:22,364 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:41:22,364 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:41:22,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-13 14:41:22,364 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:41:22,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:41:22,365 INFO L85 PathProgramCache]: Analyzing trace with hash 382963634, now seen corresponding path program 1 times [2022-12-13 14:41:22,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:41:22,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166188211] [2022-12-13 14:41:22,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:22,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:41:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:41:22,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:22,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:41:22,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:41:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:41:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:41:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:22,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:22,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:41:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:41:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:41:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 14:41:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 14:41:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 14:41:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 14:41:22,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:41:22,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166188211] [2022-12-13 14:41:22,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166188211] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:41:22,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002154042] [2022-12-13 14:41:22,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:22,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:41:22,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:41:22,759 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:41:22,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-12-13 14:41:22,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:22,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 1900 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:41:22,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:41:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 14:41:22,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:41:22,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002154042] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:41:22,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:41:22,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 14:41:22,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715152123] [2022-12-13 14:41:22,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:41:22,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:41:22,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:41:22,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:41:22,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:41:22,994 INFO L87 Difference]: Start difference. First operand 4372 states and 7234 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 14:41:24,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:41:24,026 INFO L93 Difference]: Finished difference Result 8674 states and 14590 transitions. [2022-12-13 14:41:24,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:41:24,027 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), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 158 [2022-12-13 14:41:24,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:41:24,040 INFO L225 Difference]: With dead ends: 8674 [2022-12-13 14:41:24,040 INFO L226 Difference]: Without dead ends: 4422 [2022-12-13 14:41:24,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:41:24,049 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 22 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2413 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:41:24,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2413 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:41:24,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2022-12-13 14:41:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 4422. [2022-12-13 14:41:24,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4422 states, 3456 states have (on average 1.6102430555555556) internal successors, (5565), 3618 states have internal predecessors, (5565), 747 states have call successors, (747), 186 states have call predecessors, (747), 218 states have return successors, (961), 737 states have call predecessors, (961), 742 states have call successors, (961) [2022-12-13 14:41:24,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4422 states to 4422 states and 7273 transitions. [2022-12-13 14:41:24,795 INFO L78 Accepts]: Start accepts. Automaton has 4422 states and 7273 transitions. Word has length 158 [2022-12-13 14:41:24,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:41:24,795 INFO L495 AbstractCegarLoop]: Abstraction has 4422 states and 7273 transitions. [2022-12-13 14:41:24,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 14:41:24,795 INFO L276 IsEmpty]: Start isEmpty. Operand 4422 states and 7273 transitions. [2022-12-13 14:41:24,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-13 14:41:24,797 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:41:24,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:41:24,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-12-13 14:41:24,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 14:41:24,999 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:41:24,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:41:24,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1691448557, now seen corresponding path program 1 times [2022-12-13 14:41:25,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:41:25,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129627870] [2022-12-13 14:41:25,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:25,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:41:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:41:25,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:41:25,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:41:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:25,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:41:25,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:41:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:41:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:41:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:41:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 14:41:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 14:41:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:41:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:25,466 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 14:41:25,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:41:25,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129627870] [2022-12-13 14:41:25,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129627870] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:41:25,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:41:25,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 14:41:25,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120665371] [2022-12-13 14:41:25,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:41:25,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 14:41:25,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:41:25,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 14:41:25,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:41:25,468 INFO L87 Difference]: Start difference. First operand 4422 states and 7273 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 14:41:36,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:41:36,342 INFO L93 Difference]: Finished difference Result 10138 states and 17487 transitions. [2022-12-13 14:41:36,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 14:41:36,342 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 159 [2022-12-13 14:41:36,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:41:36,368 INFO L225 Difference]: With dead ends: 10138 [2022-12-13 14:41:36,368 INFO L226 Difference]: Without dead ends: 6516 [2022-12-13 14:41:36,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-12-13 14:41:36,378 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 4249 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 6249 mSolverCounterSat, 1393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4307 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 7642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1393 IncrementalHoareTripleChecker+Valid, 6249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:41:36,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4307 Valid, 2849 Invalid, 7642 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1393 Valid, 6249 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-12-13 14:41:36,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6516 states. [2022-12-13 14:41:37,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6516 to 4783. [2022-12-13 14:41:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4783 states, 3749 states have (on average 1.5897572686049612) internal successors, (5960), 3910 states have internal predecessors, (5960), 786 states have call successors, (786), 219 states have call predecessors, (786), 247 states have return successors, (1019), 773 states have call predecessors, (1019), 781 states have call successors, (1019) [2022-12-13 14:41:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4783 states to 4783 states and 7765 transitions. [2022-12-13 14:41:37,312 INFO L78 Accepts]: Start accepts. Automaton has 4783 states and 7765 transitions. Word has length 159 [2022-12-13 14:41:37,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:41:37,312 INFO L495 AbstractCegarLoop]: Abstraction has 4783 states and 7765 transitions. [2022-12-13 14:41:37,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 7 states have internal predecessors, (111), 4 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 14:41:37,312 INFO L276 IsEmpty]: Start isEmpty. Operand 4783 states and 7765 transitions. [2022-12-13 14:41:37,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-12-13 14:41:37,314 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:41:37,314 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:41:37,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-13 14:41:37,315 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:41:37,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:41:37,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1894656905, now seen corresponding path program 1 times [2022-12-13 14:41:37,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:41:37,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919225909] [2022-12-13 14:41:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:37,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:41:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:41:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:37,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:41:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:41:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:41:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:41:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:41:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:41:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:41:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 14:41:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:41:37,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 14:41:37,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 14:41:37,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:37,915 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-13 14:41:37,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:41:37,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919225909] [2022-12-13 14:41:37,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919225909] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:41:37,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700337355] [2022-12-13 14:41:37,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:37,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:41:37,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:41:37,917 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:41:37,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-12-13 14:41:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:38,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 1917 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 14:41:38,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:41:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 14:41:38,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:41:38,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700337355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:41:38,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:41:38,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-12-13 14:41:38,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428145309] [2022-12-13 14:41:38,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:41:38,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:41:38,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:41:38,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:41:38,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:41:38,161 INFO L87 Difference]: Start difference. First operand 4783 states and 7765 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-12-13 14:41:39,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:41:39,210 INFO L93 Difference]: Finished difference Result 5062 states and 8207 transitions. [2022-12-13 14:41:39,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 14:41:39,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 164 [2022-12-13 14:41:39,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:41:39,225 INFO L225 Difference]: With dead ends: 5062 [2022-12-13 14:41:39,226 INFO L226 Difference]: Without dead ends: 5047 [2022-12-13 14:41:39,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-12-13 14:41:39,228 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 67 mSDsluCounter, 2584 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3468 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:41:39,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3468 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:41:39,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5047 states. [2022-12-13 14:41:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5047 to 4813. [2022-12-13 14:41:40,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4813 states, 3779 states have (on average 1.5850754167769252) internal successors, (5990), 3940 states have internal predecessors, (5990), 786 states have call successors, (786), 219 states have call predecessors, (786), 247 states have return successors, (1019), 773 states have call predecessors, (1019), 781 states have call successors, (1019) [2022-12-13 14:41:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4813 states to 4813 states and 7795 transitions. [2022-12-13 14:41:40,127 INFO L78 Accepts]: Start accepts. Automaton has 4813 states and 7795 transitions. Word has length 164 [2022-12-13 14:41:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:41:40,127 INFO L495 AbstractCegarLoop]: Abstraction has 4813 states and 7795 transitions. [2022-12-13 14:41:40,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-12-13 14:41:40,127 INFO L276 IsEmpty]: Start isEmpty. Operand 4813 states and 7795 transitions. [2022-12-13 14:41:40,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-12-13 14:41:40,131 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:41:40,131 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:41:40,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-12-13 14:41:40,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-13 14:41:40,333 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:41:40,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:41:40,334 INFO L85 PathProgramCache]: Analyzing trace with hash -797636358, now seen corresponding path program 1 times [2022-12-13 14:41:40,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:41:40,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003336837] [2022-12-13 14:41:40,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:40,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:41:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:40,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:41:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:40,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:41:40,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:40,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:41:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:40,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:40,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:41:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:40,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:41:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:40,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:40,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:41:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:40,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:41:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:40,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:41:40,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:40,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:41:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:40,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 14:41:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:40,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:41:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:40,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 14:41:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:41,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 14:41:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:41,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 14:41:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:41,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 14:41:41,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:41,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 14:41:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:41,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 14:41:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 14:41:41,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:41:41,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003336837] [2022-12-13 14:41:41,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003336837] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:41:41,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993444802] [2022-12-13 14:41:41,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:41:41,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:41:41,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:41:41,022 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:41:41,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-12-13 14:41:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:41:41,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 2016 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 14:41:41,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:41:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 9 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 14:41:41,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:41:42,044 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-12-13 14:41:42,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993444802] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:41:42,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:41:42,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 25 [2022-12-13 14:41:42,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226544939] [2022-12-13 14:41:42,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:41:42,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 14:41:42,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:41:42,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 14:41:42,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2022-12-13 14:41:42,047 INFO L87 Difference]: Start difference. First operand 4813 states and 7795 transitions. Second operand has 25 states, 25 states have (on average 11.32) internal successors, (283), 18 states have internal predecessors, (283), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) [2022-12-13 14:42:18,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:42:18,899 INFO L93 Difference]: Finished difference Result 29220 states and 53297 transitions. [2022-12-13 14:42:18,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-12-13 14:42:18,900 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.32) internal successors, (283), 18 states have internal predecessors, (283), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) Word has length 201 [2022-12-13 14:42:18,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:42:19,040 INFO L225 Difference]: With dead ends: 29220 [2022-12-13 14:42:19,040 INFO L226 Difference]: Without dead ends: 24523 [2022-12-13 14:42:19,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 445 SyntacticMatches, 5 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4022 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1768, Invalid=10888, Unknown=0, NotChecked=0, Total=12656 [2022-12-13 14:42:19,070 INFO L413 NwaCegarLoop]: 1359 mSDtfsCounter, 9071 mSDsluCounter, 12002 mSDsCounter, 0 mSdLazyCounter, 33471 mSolverCounterSat, 5234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9085 SdHoareTripleChecker+Valid, 13361 SdHoareTripleChecker+Invalid, 38705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 5234 IncrementalHoareTripleChecker+Valid, 33471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2022-12-13 14:42:19,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9085 Valid, 13361 Invalid, 38705 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [5234 Valid, 33471 Invalid, 0 Unknown, 0 Unchecked, 22.6s Time] [2022-12-13 14:42:19,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24523 states. [2022-12-13 14:42:23,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24523 to 15932. [2022-12-13 14:42:23,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15932 states, 12155 states have (on average 1.5675853558206498) internal successors, (19054), 12741 states have internal predecessors, (19054), 2952 states have call successors, (2952), 615 states have call predecessors, (2952), 824 states have return successors, (4531), 3001 states have call predecessors, (4531), 2947 states have call successors, (4531) [2022-12-13 14:42:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15932 states to 15932 states and 26537 transitions. [2022-12-13 14:42:23,101 INFO L78 Accepts]: Start accepts. Automaton has 15932 states and 26537 transitions. Word has length 201 [2022-12-13 14:42:23,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:42:23,101 INFO L495 AbstractCegarLoop]: Abstraction has 15932 states and 26537 transitions. [2022-12-13 14:42:23,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.32) internal successors, (283), 18 states have internal predecessors, (283), 9 states have call successors, (51), 8 states have call predecessors, (51), 14 states have return successors, (50), 14 states have call predecessors, (50), 9 states have call successors, (50) [2022-12-13 14:42:23,101 INFO L276 IsEmpty]: Start isEmpty. Operand 15932 states and 26537 transitions. [2022-12-13 14:42:23,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-12-13 14:42:23,114 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:42:23,114 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:42:23,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-12-13 14:42:23,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-13 14:42:23,316 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:42:23,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:42:23,317 INFO L85 PathProgramCache]: Analyzing trace with hash 815046817, now seen corresponding path program 1 times [2022-12-13 14:42:23,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:42:23,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733837521] [2022-12-13 14:42:23,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:42:23,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:42:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:42:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:42:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:42:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:42:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:42:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:42:23,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:42:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:42:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:42:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:42:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:42:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:42:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 14:42:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 14:42:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:42:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:42:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:42:23,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:42:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 14:42:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 14:42:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 14:42:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,671 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-12-13 14:42:23,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:42:23,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733837521] [2022-12-13 14:42:23,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733837521] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:42:23,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253165759] [2022-12-13 14:42:23,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:42:23,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:42:23,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:42:23,672 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:42:23,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-12-13 14:42:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:23,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 2040 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:42:23,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:42:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-13 14:42:23,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:42:23,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253165759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:42:23,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:42:23,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 14:42:23,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987492124] [2022-12-13 14:42:23,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:42:23,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:42:23,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:42:23,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:42:23,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:42:23,928 INFO L87 Difference]: Start difference. First operand 15932 states and 26537 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 14:42:27,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:42:27,777 INFO L93 Difference]: Finished difference Result 32108 states and 53847 transitions. [2022-12-13 14:42:27,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:42:27,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 204 [2022-12-13 14:42:27,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:42:27,836 INFO L225 Difference]: With dead ends: 32108 [2022-12-13 14:42:27,836 INFO L226 Difference]: Without dead ends: 16372 [2022-12-13 14:42:27,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:42:27,874 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 17 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2414 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:42:27,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2414 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:42:27,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16372 states. [2022-12-13 14:42:31,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16372 to 16342. [2022-12-13 14:42:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16342 states, 12501 states have (on average 1.5635549156067514) internal successors, (19546), 13104 states have internal predecessors, (19546), 2952 states have call successors, (2952), 662 states have call predecessors, (2952), 888 states have return successors, (4461), 3001 states have call predecessors, (4461), 2947 states have call successors, (4461) [2022-12-13 14:42:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16342 states to 16342 states and 26959 transitions. [2022-12-13 14:42:31,585 INFO L78 Accepts]: Start accepts. Automaton has 16342 states and 26959 transitions. Word has length 204 [2022-12-13 14:42:31,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:42:31,585 INFO L495 AbstractCegarLoop]: Abstraction has 16342 states and 26959 transitions. [2022-12-13 14:42:31,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 14:42:31,586 INFO L276 IsEmpty]: Start isEmpty. Operand 16342 states and 26959 transitions. [2022-12-13 14:42:31,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-12-13 14:42:31,599 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:42:31,599 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:42:31,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-12-13 14:42:31,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-12-13 14:42:31,800 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:42:31,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:42:31,801 INFO L85 PathProgramCache]: Analyzing trace with hash 308507968, now seen corresponding path program 1 times [2022-12-13 14:42:31,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:42:31,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862810631] [2022-12-13 14:42:31,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:42:31,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:42:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:31,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:42:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:31,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:42:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:31,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:42:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:31,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 14:42:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:42:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:42:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 14:42:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:42:32,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:42:32,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:42:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:42:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:42:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:42:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:42:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 14:42:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 14:42:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 14:42:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 14:42:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 14:42:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 14:42:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-12-13 14:42:32,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:42:32,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862810631] [2022-12-13 14:42:32,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862810631] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:42:32,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410767189] [2022-12-13 14:42:32,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:42:32,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:42:32,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:42:32,137 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:42:32,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-12-13 14:42:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:32,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 2019 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:42:32,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:42:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 14:42:32,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:42:32,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410767189] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:42:32,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:42:32,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 14:42:32,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174212114] [2022-12-13 14:42:32,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:42:32,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:42:32,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:42:32,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:42:32,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:42:32,347 INFO L87 Difference]: Start difference. First operand 16342 states and 26959 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-13 14:42:39,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:42:39,420 INFO L93 Difference]: Finished difference Result 47752 states and 80298 transitions. [2022-12-13 14:42:39,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:42:39,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 206 [2022-12-13 14:42:39,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:42:39,550 INFO L225 Difference]: With dead ends: 47752 [2022-12-13 14:42:39,551 INFO L226 Difference]: Without dead ends: 31642 [2022-12-13 14:42:39,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 14:42:39,601 INFO L413 NwaCegarLoop]: 1284 mSDtfsCounter, 662 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:42:39,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 2122 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:42:39,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31642 states. [2022-12-13 14:42:46,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31642 to 31603. [2022-12-13 14:42:46,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31603 states, 24118 states have (on average 1.5621942117920224) internal successors, (37677), 25312 states have internal predecessors, (37677), 5748 states have call successors, (5748), 1292 states have call predecessors, (5748), 1736 states have return successors, (9642), 5850 states have call predecessors, (9642), 5743 states have call successors, (9642) [2022-12-13 14:42:46,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31603 states to 31603 states and 53067 transitions. [2022-12-13 14:42:46,753 INFO L78 Accepts]: Start accepts. Automaton has 31603 states and 53067 transitions. Word has length 206 [2022-12-13 14:42:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:42:46,753 INFO L495 AbstractCegarLoop]: Abstraction has 31603 states and 53067 transitions. [2022-12-13 14:42:46,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-12-13 14:42:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 31603 states and 53067 transitions. [2022-12-13 14:42:46,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-12-13 14:42:46,778 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:42:46,778 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:42:46,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-12-13 14:42:46,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:42:46,980 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:42:46,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:42:46,981 INFO L85 PathProgramCache]: Analyzing trace with hash -2139796878, now seen corresponding path program 1 times [2022-12-13 14:42:46,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:42:46,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623390000] [2022-12-13 14:42:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:42:46,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:42:47,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:42:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:42:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:42:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-12-13 14:42:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:42:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:42:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 14:42:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:42:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:42:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:42:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:42:47,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:42:47,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 14:42:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 14:42:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:42:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:42:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:42:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:42:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 14:42:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 14:42:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 14:42:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,353 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-13 14:42:47,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:42:47,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623390000] [2022-12-13 14:42:47,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623390000] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:42:47,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13932394] [2022-12-13 14:42:47,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:42:47,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:42:47,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:42:47,354 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:42:47,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-12-13 14:42:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:42:47,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 2038 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:42:47,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:42:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-12-13 14:42:47,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:42:47,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13932394] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:42:47,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:42:47,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 14:42:47,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007193920] [2022-12-13 14:42:47,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:42:47,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:42:47,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:42:47,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:42:47,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:42:47,562 INFO L87 Difference]: Start difference. First operand 31603 states and 53067 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 14:42:54,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:42:54,719 INFO L93 Difference]: Finished difference Result 50851 states and 85194 transitions. [2022-12-13 14:42:54,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:42:54,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 205 [2022-12-13 14:42:54,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:42:54,865 INFO L225 Difference]: With dead ends: 50851 [2022-12-13 14:42:54,865 INFO L226 Difference]: Without dead ends: 31648 [2022-12-13 14:42:54,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:42:54,924 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 84 mSDsluCounter, 1620 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:42:54,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 2451 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:42:54,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31648 states. [2022-12-13 14:43:01,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31648 to 31600. [2022-12-13 14:43:01,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31600 states, 24115 states have (on average 1.5622226829774) internal successors, (37673), 25309 states have internal predecessors, (37673), 5748 states have call successors, (5748), 1292 states have call predecessors, (5748), 1736 states have return successors, (9642), 5850 states have call predecessors, (9642), 5743 states have call successors, (9642) [2022-12-13 14:43:02,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31600 states to 31600 states and 53063 transitions. [2022-12-13 14:43:02,079 INFO L78 Accepts]: Start accepts. Automaton has 31600 states and 53063 transitions. Word has length 205 [2022-12-13 14:43:02,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:43:02,079 INFO L495 AbstractCegarLoop]: Abstraction has 31600 states and 53063 transitions. [2022-12-13 14:43:02,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 14:43:02,079 INFO L276 IsEmpty]: Start isEmpty. Operand 31600 states and 53063 transitions. [2022-12-13 14:43:02,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-12-13 14:43:02,103 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:43:02,103 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:43:02,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-12-13 14:43:02,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-12-13 14:43:02,304 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:43:02,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:43:02,306 INFO L85 PathProgramCache]: Analyzing trace with hash -899320548, now seen corresponding path program 1 times [2022-12-13 14:43:02,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:43:02,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334127356] [2022-12-13 14:43:02,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:43:02,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:43:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:43:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:43:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:43:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:43:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:43:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:43:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:43:02,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:43:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:43:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:43:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:43:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:43:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 14:43:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 14:43:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:43:02,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:43:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:43:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:43:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 14:43:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 14:43:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 14:43:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-12-13 14:43:02,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:43:02,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334127356] [2022-12-13 14:43:02,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334127356] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:43:02,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104170532] [2022-12-13 14:43:02,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:43:02,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:43:02,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:43:02,677 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:43:02,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-12-13 14:43:02,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:02,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 2041 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:43:02,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:43:02,927 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-12-13 14:43:02,927 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:43:02,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104170532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:43:02,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:43:02,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-12-13 14:43:02,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052175027] [2022-12-13 14:43:02,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:43:02,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:43:02,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:43:02,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:43:02,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:43:02,929 INFO L87 Difference]: Start difference. First operand 31600 states and 53063 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 14:43:10,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:43:10,628 INFO L93 Difference]: Finished difference Result 63377 states and 107619 transitions. [2022-12-13 14:43:10,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:43:10,628 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 206 [2022-12-13 14:43:10,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:43:10,793 INFO L225 Difference]: With dead ends: 63377 [2022-12-13 14:43:10,793 INFO L226 Difference]: Without dead ends: 31810 [2022-12-13 14:43:10,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:43:10,987 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 20 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:43:10,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2410 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:43:11,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31810 states. [2022-12-13 14:43:17,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31810 to 31732. [2022-12-13 14:43:17,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31732 states, 24265 states have (on average 1.5512054399340613) internal successors, (37640), 25413 states have internal predecessors, (37640), 5748 states have call successors, (5748), 1320 states have call predecessors, (5748), 1718 states have return successors, (9534), 5850 states have call predecessors, (9534), 5743 states have call successors, (9534) [2022-12-13 14:43:18,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31732 states to 31732 states and 52922 transitions. [2022-12-13 14:43:18,225 INFO L78 Accepts]: Start accepts. Automaton has 31732 states and 52922 transitions. Word has length 206 [2022-12-13 14:43:18,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:43:18,226 INFO L495 AbstractCegarLoop]: Abstraction has 31732 states and 52922 transitions. [2022-12-13 14:43:18,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 14:43:18,226 INFO L276 IsEmpty]: Start isEmpty. Operand 31732 states and 52922 transitions. [2022-12-13 14:43:18,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-12-13 14:43:18,262 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:43:18,262 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:43:18,268 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Ended with exit code 0 [2022-12-13 14:43:18,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:43:18,464 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:43:18,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:43:18,465 INFO L85 PathProgramCache]: Analyzing trace with hash -954775401, now seen corresponding path program 1 times [2022-12-13 14:43:18,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:43:18,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008368503] [2022-12-13 14:43:18,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:43:18,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:43:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:43:18,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:43:18,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:43:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:43:18,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:43:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:43:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:43:18,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:43:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:43:18,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:43:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:43:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:43:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 14:43:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:43:18,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 14:43:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 14:43:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 14:43:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 14:43:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 14:43:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 14:43:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:18,840 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-12-13 14:43:18,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:43:18,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008368503] [2022-12-13 14:43:18,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008368503] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:43:18,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040276635] [2022-12-13 14:43:18,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:43:18,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:43:18,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:43:18,842 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:43:18,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-12-13 14:43:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:43:19,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 2021 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 14:43:19,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:43:19,233 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 57 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-13 14:43:19,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:43:19,518 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-12-13 14:43:19,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040276635] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:43:19,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:43:19,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 19 [2022-12-13 14:43:19,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27854258] [2022-12-13 14:43:19,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:43:19,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 14:43:19,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:43:19,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 14:43:19,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-12-13 14:43:19,521 INFO L87 Difference]: Start difference. First operand 31732 states and 52922 transitions. Second operand has 19 states, 19 states have (on average 13.052631578947368) internal successors, (248), 14 states have internal predecessors, (248), 7 states have call successors, (47), 8 states have call predecessors, (47), 11 states have return successors, (44), 9 states have call predecessors, (44), 7 states have call successors, (44) [2022-12-13 14:44:03,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:44:03,654 INFO L93 Difference]: Finished difference Result 123006 states and 228809 transitions. [2022-12-13 14:44:03,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-13 14:44:03,654 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.052631578947368) internal successors, (248), 14 states have internal predecessors, (248), 7 states have call successors, (47), 8 states have call predecessors, (47), 11 states have return successors, (44), 9 states have call predecessors, (44), 7 states have call successors, (44) Word has length 207 [2022-12-13 14:44:03,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:44:04,386 INFO L225 Difference]: With dead ends: 123006 [2022-12-13 14:44:04,386 INFO L226 Difference]: Without dead ends: 90579 [2022-12-13 14:44:04,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 464 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=618, Invalid=2804, Unknown=0, NotChecked=0, Total=3422 [2022-12-13 14:44:04,587 INFO L413 NwaCegarLoop]: 1156 mSDtfsCounter, 6810 mSDsluCounter, 7144 mSDsCounter, 0 mSdLazyCounter, 15886 mSolverCounterSat, 2845 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6824 SdHoareTripleChecker+Valid, 8300 SdHoareTripleChecker+Invalid, 18731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2845 IncrementalHoareTripleChecker+Valid, 15886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:44:04,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6824 Valid, 8300 Invalid, 18731 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2845 Valid, 15886 Invalid, 0 Unknown, 0 Unchecked, 13.3s Time] [2022-12-13 14:44:04,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90579 states. [2022-12-13 14:44:22,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90579 to 71547. [2022-12-13 14:44:22,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71547 states, 53227 states have (on average 1.5438593195182897) internal successors, (82175), 56123 states have internal predecessors, (82175), 14705 states have call successors, (14705), 2607 states have call predecessors, (14705), 3614 states have return successors, (26151), 14944 states have call predecessors, (26151), 14700 states have call successors, (26151) [2022-12-13 14:44:23,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71547 states to 71547 states and 123031 transitions. [2022-12-13 14:44:23,297 INFO L78 Accepts]: Start accepts. Automaton has 71547 states and 123031 transitions. Word has length 207 [2022-12-13 14:44:23,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:44:23,297 INFO L495 AbstractCegarLoop]: Abstraction has 71547 states and 123031 transitions. [2022-12-13 14:44:23,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.052631578947368) internal successors, (248), 14 states have internal predecessors, (248), 7 states have call successors, (47), 8 states have call predecessors, (47), 11 states have return successors, (44), 9 states have call predecessors, (44), 7 states have call successors, (44) [2022-12-13 14:44:23,297 INFO L276 IsEmpty]: Start isEmpty. Operand 71547 states and 123031 transitions. [2022-12-13 14:44:23,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-12-13 14:44:23,369 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:44:23,369 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:44:23,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2022-12-13 14:44:23,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-12-13 14:44:23,571 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:44:23,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:44:23,572 INFO L85 PathProgramCache]: Analyzing trace with hash -430000461, now seen corresponding path program 1 times [2022-12-13 14:44:23,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:44:23,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716752833] [2022-12-13 14:44:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:44:23,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:44:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:23,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:44:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:23,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:44:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:23,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:44:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:23,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 14:44:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:23,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:44:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:23,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:44:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 14:44:24,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:44:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:44:24,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:44:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:44:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:44:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 14:44:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 14:44:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:44:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:44:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:44:24,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:44:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 14:44:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 14:44:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 14:44:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,057 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-12-13 14:44:24,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:44:24,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716752833] [2022-12-13 14:44:24,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716752833] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:44:24,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493643863] [2022-12-13 14:44:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:44:24,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:44:24,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:44:24,058 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:44:24,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-12-13 14:44:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:44:24,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 14:44:24,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:44:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-13 14:44:24,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:44:24,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1493643863] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:44:24,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:44:24,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-12-13 14:44:24,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204059481] [2022-12-13 14:44:24,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:44:24,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:44:24,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:44:24,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:44:24,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:44:24,349 INFO L87 Difference]: Start difference. First operand 71547 states and 123031 transitions. Second operand has 8 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-13 14:44:43,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:44:43,363 INFO L93 Difference]: Finished difference Result 142912 states and 245823 transitions. [2022-12-13 14:44:43,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:44:43,364 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 210 [2022-12-13 14:44:43,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:44:43,802 INFO L225 Difference]: With dead ends: 142912 [2022-12-13 14:44:43,803 INFO L226 Difference]: Without dead ends: 71514 [2022-12-13 14:44:44,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-12-13 14:44:44,118 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 112 mSDsluCounter, 4843 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 5672 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:44:44,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 5672 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:44:44,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71514 states. [2022-12-13 14:45:01,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71514 to 71511. [2022-12-13 14:45:01,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71511 states, 53191 states have (on average 1.5435506006655262) internal successors, (82103), 56087 states have internal predecessors, (82103), 14705 states have call successors, (14705), 2607 states have call predecessors, (14705), 3614 states have return successors, (26151), 14944 states have call predecessors, (26151), 14700 states have call successors, (26151) [2022-12-13 14:45:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71511 states to 71511 states and 122959 transitions. [2022-12-13 14:45:02,135 INFO L78 Accepts]: Start accepts. Automaton has 71511 states and 122959 transitions. Word has length 210 [2022-12-13 14:45:02,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:45:02,136 INFO L495 AbstractCegarLoop]: Abstraction has 71511 states and 122959 transitions. [2022-12-13 14:45:02,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 20.285714285714285) internal successors, (142), 7 states have internal predecessors, (142), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-13 14:45:02,136 INFO L276 IsEmpty]: Start isEmpty. Operand 71511 states and 122959 transitions. [2022-12-13 14:45:02,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-12-13 14:45:02,207 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:45:02,207 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:45:02,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-12-13 14:45:02,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-12-13 14:45:02,409 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:45:02,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:45:02,410 INFO L85 PathProgramCache]: Analyzing trace with hash 119700438, now seen corresponding path program 1 times [2022-12-13 14:45:02,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:45:02,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383163048] [2022-12-13 14:45:02,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:45:02,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:45:02,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:45:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:45:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:45:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 14:45:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:45:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:45:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:45:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:45:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:45:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:45:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:45:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:45:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 14:45:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 14:45:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:45:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:45:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:45:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:45:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 14:45:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 14:45:02,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 14:45:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:02,922 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-12-13 14:45:02,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:45:02,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383163048] [2022-12-13 14:45:02,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383163048] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:45:02,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298942328] [2022-12-13 14:45:02,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:45:02,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:45:02,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:45:02,923 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:45:02,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-12-13 14:45:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:03,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 2043 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:45:03,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:45:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-13 14:45:03,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:45:03,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298942328] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:45:03,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:45:03,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-12-13 14:45:03,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380488009] [2022-12-13 14:45:03,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:45:03,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:45:03,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:45:03,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:45:03,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:45:03,163 INFO L87 Difference]: Start difference. First operand 71511 states and 122959 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 14:45:22,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:45:22,513 INFO L93 Difference]: Finished difference Result 139706 states and 242476 transitions. [2022-12-13 14:45:22,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:45:22,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 210 [2022-12-13 14:45:22,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:45:23,078 INFO L225 Difference]: With dead ends: 139706 [2022-12-13 14:45:23,078 INFO L226 Difference]: Without dead ends: 72665 [2022-12-13 14:45:23,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 251 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:45:23,392 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 15 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2345 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:45:23,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2345 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:45:23,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72665 states. [2022-12-13 14:45:42,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72665 to 72523. [2022-12-13 14:45:42,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72523 states, 54063 states have (on average 1.5415533729167823) internal successors, (83341), 56977 states have internal predecessors, (83341), 14705 states have call successors, (14705), 2729 states have call predecessors, (14705), 3754 states have return successors, (26151), 14944 states have call predecessors, (26151), 14700 states have call successors, (26151) [2022-12-13 14:45:43,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72523 states to 72523 states and 124197 transitions. [2022-12-13 14:45:43,444 INFO L78 Accepts]: Start accepts. Automaton has 72523 states and 124197 transitions. Word has length 210 [2022-12-13 14:45:43,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:45:43,445 INFO L495 AbstractCegarLoop]: Abstraction has 72523 states and 124197 transitions. [2022-12-13 14:45:43,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 14:45:43,445 INFO L276 IsEmpty]: Start isEmpty. Operand 72523 states and 124197 transitions. [2022-12-13 14:45:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-12-13 14:45:43,515 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:45:43,516 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:45:43,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-12-13 14:45:43,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-12-13 14:45:43,717 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:45:43,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:45:43,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1854217844, now seen corresponding path program 1 times [2022-12-13 14:45:43,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:45:43,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149393769] [2022-12-13 14:45:43,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:45:43,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:45:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:43,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:45:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:43,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:45:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:43,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:45:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:43,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 14:45:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:43,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:45:43,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:43,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:45:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 14:45:44,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:45:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:45:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:45:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:45:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:45:44,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 14:45:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 14:45:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:45:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:45:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:45:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:45:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 14:45:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 14:45:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 14:45:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-12-13 14:45:44,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:45:44,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149393769] [2022-12-13 14:45:44,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149393769] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:45:44,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210884698] [2022-12-13 14:45:44,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:45:44,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:45:44,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:45:44,127 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:45:44,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-12-13 14:45:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:45:44,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 2037 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 14:45:44,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:45:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-13 14:45:44,420 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:45:44,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210884698] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:45:44,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:45:44,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-12-13 14:45:44,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970342992] [2022-12-13 14:45:44,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:45:44,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 14:45:44,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:45:44,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 14:45:44,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:45:44,421 INFO L87 Difference]: Start difference. First operand 72523 states and 124197 transitions. Second operand has 8 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-13 14:46:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:46:04,453 INFO L93 Difference]: Finished difference Result 128335 states and 218922 transitions. [2022-12-13 14:46:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 14:46:04,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 211 [2022-12-13 14:46:04,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:46:04,963 INFO L225 Difference]: With dead ends: 128335 [2022-12-13 14:46:04,963 INFO L226 Difference]: Without dead ends: 72516 [2022-12-13 14:46:05,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-12-13 14:46:05,191 INFO L413 NwaCegarLoop]: 807 mSDtfsCounter, 66 mSDsluCounter, 4757 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 5564 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:46:05,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 5564 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:46:05,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72516 states. [2022-12-13 14:46:23,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72516 to 72511. [2022-12-13 14:46:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72511 states, 54051 states have (on average 1.5415625982868033) internal successors, (83323), 56965 states have internal predecessors, (83323), 14705 states have call successors, (14705), 2729 states have call predecessors, (14705), 3754 states have return successors, (26151), 14944 states have call predecessors, (26151), 14700 states have call successors, (26151) [2022-12-13 14:46:23,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72511 states to 72511 states and 124179 transitions. [2022-12-13 14:46:23,671 INFO L78 Accepts]: Start accepts. Automaton has 72511 states and 124179 transitions. Word has length 211 [2022-12-13 14:46:23,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:46:23,671 INFO L495 AbstractCegarLoop]: Abstraction has 72511 states and 124179 transitions. [2022-12-13 14:46:23,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-13 14:46:23,672 INFO L276 IsEmpty]: Start isEmpty. Operand 72511 states and 124179 transitions. [2022-12-13 14:46:23,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-12-13 14:46:23,745 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:46:23,746 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:46:23,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-12-13 14:46:23,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-12-13 14:46:23,948 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:46:23,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:46:23,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1294784524, now seen corresponding path program 1 times [2022-12-13 14:46:23,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:46:23,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653881054] [2022-12-13 14:46:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:46:23,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:46:23,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:46:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:46:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:46:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 14:46:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:46:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:46:24,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:46:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:46:24,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:46:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:46:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:46:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:46:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 14:46:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 14:46:24,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:46:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:46:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:46:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:46:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 14:46:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 14:46:24,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 14:46:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,380 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-12-13 14:46:24,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:46:24,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653881054] [2022-12-13 14:46:24,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653881054] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:46:24,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421529869] [2022-12-13 14:46:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:46:24,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:46:24,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:46:24,381 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:46:24,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-12-13 14:46:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:46:24,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 2043 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:46:24,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:46:24,691 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-12-13 14:46:24,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:46:24,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421529869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:46:24,692 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:46:24,692 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-12-13 14:46:24,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992492778] [2022-12-13 14:46:24,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:46:24,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:46:24,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:46:24,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:46:24,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:46:24,693 INFO L87 Difference]: Start difference. First operand 72511 states and 124179 transitions. Second operand has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 14:46:44,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:46:44,059 INFO L93 Difference]: Finished difference Result 140990 states and 244010 transitions. [2022-12-13 14:46:44,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:46:44,060 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 211 [2022-12-13 14:46:44,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:46:44,575 INFO L225 Difference]: With dead ends: 140990 [2022-12-13 14:46:44,575 INFO L226 Difference]: Without dead ends: 72673 [2022-12-13 14:46:44,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:46:44,878 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 18 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:46:44,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2344 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:46:44,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72673 states. [2022-12-13 14:47:03,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72673 to 72501. [2022-12-13 14:47:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72501 states, 54046 states have (on average 1.5348406912629982) internal successors, (82952), 56955 states have internal predecessors, (82952), 14705 states have call successors, (14705), 2729 states have call predecessors, (14705), 3749 states have return successors, (26127), 14944 states have call predecessors, (26127), 14700 states have call successors, (26127) [2022-12-13 14:47:03,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72501 states to 72501 states and 123784 transitions. [2022-12-13 14:47:03,829 INFO L78 Accepts]: Start accepts. Automaton has 72501 states and 123784 transitions. Word has length 211 [2022-12-13 14:47:03,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:47:03,830 INFO L495 AbstractCegarLoop]: Abstraction has 72501 states and 123784 transitions. [2022-12-13 14:47:03,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.75) internal successors, (143), 4 states have internal predecessors, (143), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 14:47:03,830 INFO L276 IsEmpty]: Start isEmpty. Operand 72501 states and 123784 transitions. [2022-12-13 14:47:03,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-12-13 14:47:03,935 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:47:03,935 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:47:03,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-12-13 14:47:04,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-12-13 14:47:04,136 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:47:04,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:47:04,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1073251832, now seen corresponding path program 1 times [2022-12-13 14:47:04,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:47:04,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402890695] [2022-12-13 14:47:04,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:04,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:47:04,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:47:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:47:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:47:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 14:47:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:47:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:47:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:47:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:47:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:47:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:47:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:47:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:47:04,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 14:47:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 14:47:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:47:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:47:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:47:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:47:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 14:47:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 14:47:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 14:47:04,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,524 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-12-13 14:47:04,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:47:04,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402890695] [2022-12-13 14:47:04,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402890695] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:47:04,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026582138] [2022-12-13 14:47:04,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:04,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:47:04,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:47:04,525 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:47:04,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-12-13 14:47:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:04,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 2045 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:47:04,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:47:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 14:47:04,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:47:04,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026582138] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:47:04,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:47:04,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-12-13 14:47:04,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566345192] [2022-12-13 14:47:04,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:47:04,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:47:04,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:47:04,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:47:04,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:47:04,754 INFO L87 Difference]: Start difference. First operand 72501 states and 123784 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-12-13 14:47:24,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:47:24,010 INFO L93 Difference]: Finished difference Result 141728 states and 244075 transitions. [2022-12-13 14:47:24,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:47:24,012 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 213 [2022-12-13 14:47:24,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:47:24,530 INFO L225 Difference]: With dead ends: 141728 [2022-12-13 14:47:24,530 INFO L226 Difference]: Without dead ends: 73685 [2022-12-13 14:47:24,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 254 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:47:24,844 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 16 mSDsluCounter, 1551 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:47:24,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2344 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:47:24,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73685 states. [2022-12-13 14:47:42,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73685 to 73513. [2022-12-13 14:47:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73513 states, 54918 states have (on average 1.5307913616664846) internal successors, (84068), 57845 states have internal predecessors, (84068), 14705 states have call successors, (14705), 2851 states have call predecessors, (14705), 3889 states have return successors, (26173), 14944 states have call predecessors, (26173), 14700 states have call successors, (26173) [2022-12-13 14:47:43,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73513 states to 73513 states and 124946 transitions. [2022-12-13 14:47:43,636 INFO L78 Accepts]: Start accepts. Automaton has 73513 states and 124946 transitions. Word has length 213 [2022-12-13 14:47:43,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:47:43,637 INFO L495 AbstractCegarLoop]: Abstraction has 73513 states and 124946 transitions. [2022-12-13 14:47:43,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-12-13 14:47:43,637 INFO L276 IsEmpty]: Start isEmpty. Operand 73513 states and 124946 transitions. [2022-12-13 14:47:43,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-12-13 14:47:43,727 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:47:43,727 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:47:43,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-12-13 14:47:43,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:47:43,929 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:47:43,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:47:43,930 INFO L85 PathProgramCache]: Analyzing trace with hash -507672039, now seen corresponding path program 1 times [2022-12-13 14:47:43,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:47:43,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275635526] [2022-12-13 14:47:43,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:43,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:47:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:47:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:47:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:47:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 14:47:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:47:44,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:47:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:47:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:47:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:47:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:47:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:47:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:47:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 14:47:44,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 14:47:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:47:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:47:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:47:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:47:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 14:47:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 14:47:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 14:47:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,422 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-12-13 14:47:44,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:47:44,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275635526] [2022-12-13 14:47:44,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275635526] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:47:44,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755568170] [2022-12-13 14:47:44,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:47:44,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:47:44,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:47:44,423 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:47:44,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-12-13 14:47:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:47:44,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 2046 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:47:44,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:47:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 14:47:44,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:47:44,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755568170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:47:44,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:47:44,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 10 [2022-12-13 14:47:44,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904019660] [2022-12-13 14:47:44,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:47:44,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 14:47:44,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:47:44,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 14:47:44,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:47:44,625 INFO L87 Difference]: Start difference. First operand 73513 states and 124946 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 14:48:01,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:48:01,490 INFO L93 Difference]: Finished difference Result 115252 states and 194415 transitions. [2022-12-13 14:48:01,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 14:48:01,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 214 [2022-12-13 14:48:01,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:48:01,864 INFO L225 Difference]: With dead ends: 115252 [2022-12-13 14:48:01,864 INFO L226 Difference]: Without dead ends: 70688 [2022-12-13 14:48:02,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:48:02,027 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 24 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2417 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:48:02,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 2417 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:48:02,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70688 states. [2022-12-13 14:48:18,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70688 to 70685. [2022-12-13 14:48:18,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70685 states, 52636 states have (on average 1.5415495098411733) internal successors, (81141), 55598 states have internal predecessors, (81141), 14173 states have call successors, (14173), 2843 states have call predecessors, (14173), 3875 states have return successors, (24144), 14371 states have call predecessors, (24144), 14168 states have call successors, (24144) [2022-12-13 14:48:19,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70685 states to 70685 states and 119458 transitions. [2022-12-13 14:48:19,128 INFO L78 Accepts]: Start accepts. Automaton has 70685 states and 119458 transitions. Word has length 214 [2022-12-13 14:48:19,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:48:19,128 INFO L495 AbstractCegarLoop]: Abstraction has 70685 states and 119458 transitions. [2022-12-13 14:48:19,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-12-13 14:48:19,129 INFO L276 IsEmpty]: Start isEmpty. Operand 70685 states and 119458 transitions. [2022-12-13 14:48:19,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-12-13 14:48:19,169 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:48:19,169 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:48:19,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-12-13 14:48:19,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-12-13 14:48:19,371 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:48:19,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:48:19,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1876299952, now seen corresponding path program 1 times [2022-12-13 14:48:19,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:48:19,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981490193] [2022-12-13 14:48:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:48:19,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:48:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:19,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:48:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:19,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:48:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:19,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:48:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:19,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:48:19,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:19,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:48:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:19,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:48:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:19,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:48:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:19,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:48:19,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:48:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:48:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:48:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:48:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 14:48:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 14:48:20,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:48:20,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:48:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:48:20,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 14:48:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:48:20,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:48:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:48:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:48:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 14:48:20,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:48:20,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 14:48:20,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-13 14:48:20,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:48:20,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981490193] [2022-12-13 14:48:20,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981490193] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:48:20,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770487451] [2022-12-13 14:48:20,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:48:20,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:48:20,075 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:48:20,076 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:48:20,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-12-13 14:48:20,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:20,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 2362 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:48:20,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:48:20,395 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 14:48:20,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:48:20,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770487451] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:48:20,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:48:20,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2022-12-13 14:48:20,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841704324] [2022-12-13 14:48:20,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:48:20,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:48:20,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:48:20,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:48:20,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:48:20,397 INFO L87 Difference]: Start difference. First operand 70685 states and 119458 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-12-13 14:48:37,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:48:37,841 INFO L93 Difference]: Finished difference Result 140225 states and 239298 transitions. [2022-12-13 14:48:37,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:48:37,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 235 [2022-12-13 14:48:37,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:48:38,291 INFO L225 Difference]: With dead ends: 140225 [2022-12-13 14:48:38,291 INFO L226 Difference]: Without dead ends: 69640 [2022-12-13 14:48:38,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-12-13 14:48:38,562 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 795 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:48:38,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 805 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:48:38,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69640 states. [2022-12-13 14:48:55,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69640 to 69640. [2022-12-13 14:48:55,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69640 states, 51940 states have (on average 1.5353869849826722) internal successors, (79748), 54901 states have internal predecessors, (79748), 13824 states have call successors, (13824), 2843 states have call predecessors, (13824), 3875 states have return successors, (23796), 14023 states have call predecessors, (23796), 13820 states have call successors, (23796) [2022-12-13 14:48:55,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69640 states to 69640 states and 117368 transitions. [2022-12-13 14:48:55,762 INFO L78 Accepts]: Start accepts. Automaton has 69640 states and 117368 transitions. Word has length 235 [2022-12-13 14:48:55,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:48:55,762 INFO L495 AbstractCegarLoop]: Abstraction has 69640 states and 117368 transitions. [2022-12-13 14:48:55,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2022-12-13 14:48:55,763 INFO L276 IsEmpty]: Start isEmpty. Operand 69640 states and 117368 transitions. [2022-12-13 14:48:55,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-12-13 14:48:55,804 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:48:55,804 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-12-13 14:48:55,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-12-13 14:48:56,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-12-13 14:48:56,006 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:48:56,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:48:56,007 INFO L85 PathProgramCache]: Analyzing trace with hash -950224202, now seen corresponding path program 1 times [2022-12-13 14:48:56,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:48:56,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454606665] [2022-12-13 14:48:56,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:48:56,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:48:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:48:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:48:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:48:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:48:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:48:56,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:48:56,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:48:56,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:48:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:48:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:48:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:48:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:48:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 14:48:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 14:48:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:48:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:48:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:48:56,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 14:48:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:48:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:48:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:48:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:48:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 14:48:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:48:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,706 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 3 proven. 29 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-12-13 14:48:56,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:48:56,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454606665] [2022-12-13 14:48:56,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454606665] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:48:56,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981209273] [2022-12-13 14:48:56,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:48:56,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:48:56,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:48:56,707 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:48:56,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-12-13 14:48:56,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:48:56,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 2349 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:48:56,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:48:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 17 proven. 52 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 14:48:57,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:48:57,254 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-12-13 14:48:57,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981209273] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:48:57,254 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:48:57,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 17 [2022-12-13 14:48:57,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318051408] [2022-12-13 14:48:57,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:48:57,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 14:48:57,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:48:57,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 14:48:57,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-12-13 14:48:57,256 INFO L87 Difference]: Start difference. First operand 69640 states and 117368 transitions. Second operand has 17 states, 17 states have (on average 15.941176470588236) internal successors, (271), 12 states have internal predecessors, (271), 8 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (49), 11 states have call predecessors, (49), 8 states have call successors, (49) [2022-12-13 14:49:52,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:49:52,257 INFO L93 Difference]: Finished difference Result 207758 states and 385266 transitions. [2022-12-13 14:49:52,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-13 14:49:52,258 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 15.941176470588236) internal successors, (271), 12 states have internal predecessors, (271), 8 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (49), 11 states have call predecessors, (49), 8 states have call successors, (49) Word has length 233 [2022-12-13 14:49:52,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:49:53,504 INFO L225 Difference]: With dead ends: 207758 [2022-12-13 14:49:53,504 INFO L226 Difference]: Without dead ends: 138306 [2022-12-13 14:49:54,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 604 GetRequests, 530 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1719 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=926, Invalid=4476, Unknown=0, NotChecked=0, Total=5402 [2022-12-13 14:49:54,148 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 5130 mSDsluCounter, 5071 mSDsCounter, 0 mSdLazyCounter, 10052 mSolverCounterSat, 2305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5130 SdHoareTripleChecker+Valid, 5803 SdHoareTripleChecker+Invalid, 12357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2305 IncrementalHoareTripleChecker+Valid, 10052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:49:54,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5130 Valid, 5803 Invalid, 12357 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2305 Valid, 10052 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-12-13 14:49:54,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138306 states. [2022-12-13 14:50:21,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138306 to 99592. [2022-12-13 14:50:21,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99592 states, 75207 states have (on average 1.4741845838818195) internal successors, (110869), 78943 states have internal predecessors, (110869), 18054 states have call successors, (18054), 4643 states have call predecessors, (18054), 6330 states have return successors, (36628), 18133 states have call predecessors, (36628), 18050 states have call successors, (36628) [2022-12-13 14:50:21,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99592 states to 99592 states and 165551 transitions. [2022-12-13 14:50:21,818 INFO L78 Accepts]: Start accepts. Automaton has 99592 states and 165551 transitions. Word has length 233 [2022-12-13 14:50:21,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:50:21,818 INFO L495 AbstractCegarLoop]: Abstraction has 99592 states and 165551 transitions. [2022-12-13 14:50:21,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 15.941176470588236) internal successors, (271), 12 states have internal predecessors, (271), 8 states have call successors, (50), 8 states have call predecessors, (50), 8 states have return successors, (49), 11 states have call predecessors, (49), 8 states have call successors, (49) [2022-12-13 14:50:21,818 INFO L276 IsEmpty]: Start isEmpty. Operand 99592 states and 165551 transitions. [2022-12-13 14:50:21,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-12-13 14:50:21,876 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:50:21,876 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:50:21,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Ended with exit code 0 [2022-12-13 14:50:22,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2022-12-13 14:50:22,078 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:50:22,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:50:22,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1412210863, now seen corresponding path program 1 times [2022-12-13 14:50:22,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:50:22,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073369052] [2022-12-13 14:50:22,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:50:22,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:50:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 14:50:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:50:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:50:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:50:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:50:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 14:50:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:50:22,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:50:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:50:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:50:22,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:50:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:50:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 14:50:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:50:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 14:50:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 14:50:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 14:50:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:50:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 14:50:22,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:50:22,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:50:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 14:50:22,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 14:50:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,526 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-13 14:50:22,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:50:22,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073369052] [2022-12-13 14:50:22,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073369052] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:50:22,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021024794] [2022-12-13 14:50:22,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:50:22,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:50:22,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:50:22,527 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:50:22,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a6df3a1-a24e-4979-9de3-15875e59b573/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-12-13 14:50:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:50:22,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 14:50:22,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:50:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 34 proven. 46 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-12-13 14:50:22,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:50:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-12-13 14:50:23,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021024794] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:50:23,249 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:50:23,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 18 [2022-12-13 14:50:23,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284927905] [2022-12-13 14:50:23,250 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:50:23,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 14:50:23,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:50:23,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 14:50:23,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-12-13 14:50:23,252 INFO L87 Difference]: Start difference. First operand 99592 states and 165551 transitions. Second operand has 18 states, 18 states have (on average 13.5) internal successors, (243), 15 states have internal predecessors, (243), 13 states have call successors, (47), 11 states have call predecessors, (47), 10 states have return successors, (43), 13 states have call predecessors, (43), 12 states have call successors, (43) [2022-12-13 14:52:11,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:52:11,970 INFO L93 Difference]: Finished difference Result 287729 states and 528535 transitions. [2022-12-13 14:52:11,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-12-13 14:52:11,971 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 13.5) internal successors, (243), 15 states have internal predecessors, (243), 13 states have call successors, (47), 11 states have call predecessors, (47), 10 states have return successors, (43), 13 states have call predecessors, (43), 12 states have call successors, (43) Word has length 232 [2022-12-13 14:52:11,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:52:13,623 INFO L225 Difference]: With dead ends: 287729 [2022-12-13 14:52:13,623 INFO L226 Difference]: Without dead ends: 195559 [2022-12-13 14:52:14,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 641 GetRequests, 523 SyntacticMatches, 3 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5118 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1657, Invalid=11915, Unknown=0, NotChecked=0, Total=13572 [2022-12-13 14:52:14,358 INFO L413 NwaCegarLoop]: 1481 mSDtfsCounter, 17397 mSDsluCounter, 7174 mSDsCounter, 0 mSdLazyCounter, 20712 mSolverCounterSat, 10662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17397 SdHoareTripleChecker+Valid, 8655 SdHoareTripleChecker+Invalid, 31374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 10662 IncrementalHoareTripleChecker+Valid, 20712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.8s IncrementalHoareTripleChecker+Time [2022-12-13 14:52:14,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17397 Valid, 8655 Invalid, 31374 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [10662 Valid, 20712 Invalid, 0 Unknown, 0 Unchecked, 30.8s Time] [2022-12-13 14:52:14,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195559 states.