./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product01.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/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_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/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_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/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 8190dbbeca15ebdc96e247bb91a06680a00a60089c25180495df59d4a11849af --- 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 18:32:12,987 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:32:12,988 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:32:13,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:32:13,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:32:13,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:32:13,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:32:13,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:32:13,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:32:13,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:32:13,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:32:13,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:32:13,006 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:32:13,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:32:13,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:32:13,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:32:13,009 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:32:13,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:32:13,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:32:13,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:32:13,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:32:13,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:32:13,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:32:13,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:32:13,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:32:13,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:32:13,018 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:32:13,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:32:13,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:32:13,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:32:13,019 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:32:13,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:32:13,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:32:13,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:32:13,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:32:13,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:32:13,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:32:13,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:32:13,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:32:13,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:32:13,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:32:13,024 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:32:13,038 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:32:13,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:32:13,039 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:32:13,039 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:32:13,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:32:13,040 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:32:13,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:32:13,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:32:13,040 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:32:13,040 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:32:13,041 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:32:13,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:32:13,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:32:13,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:32:13,041 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:32:13,041 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:32:13,041 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:32:13,041 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:32:13,041 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:32:13,041 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:32:13,041 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:32:13,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:32:13,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:32:13,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:32:13,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:32:13,042 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:32:13,042 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:32:13,042 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:32:13,042 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:32:13,042 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:32:13,042 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:32:13,042 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:32:13,043 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:32:13,043 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:32:13,043 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:32:13,043 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_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8190dbbeca15ebdc96e247bb91a06680a00a60089c25180495df59d4a11849af [2022-12-13 18:32:13,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:32:13,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:32:13,219 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:32:13,220 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:32:13,220 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:32:13,221 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/elevator_spec2_product01.cil.c [2022-12-13 18:32:15,846 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:32:16,094 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:32:16,094 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/sv-benchmarks/c/product-lines/elevator_spec2_product01.cil.c [2022-12-13 18:32:16,113 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/data/caa0b752d/eea7c63206b94dbdb37a27f22000fa6d/FLAG467753bb1 [2022-12-13 18:32:16,401 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/data/caa0b752d/eea7c63206b94dbdb37a27f22000fa6d [2022-12-13 18:32:16,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:32:16,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:32:16,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:32:16,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:32:16,408 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:32:16,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:32:16" (1/1) ... [2022-12-13 18:32:16,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70957849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:16, skipping insertion in model container [2022-12-13 18:32:16,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:32:16" (1/1) ... [2022-12-13 18:32:16,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:32:16,454 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:32:16,556 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_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/sv-benchmarks/c/product-lines/elevator_spec2_product01.cil.c[1545,1558] [2022-12-13 18:32:16,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:32:16,838 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:32:16,848 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_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/sv-benchmarks/c/product-lines/elevator_spec2_product01.cil.c[1545,1558] [2022-12-13 18:32:16,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:32:16,943 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:32:16,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:16 WrapperNode [2022-12-13 18:32:16,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:32:16,944 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:32:16,944 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:32:16,944 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:32:16,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:16" (1/1) ... [2022-12-13 18:32:16,975 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:16" (1/1) ... [2022-12-13 18:32:17,015 INFO L138 Inliner]: procedures = 88, calls = 328, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 754 [2022-12-13 18:32:17,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:32:17,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:32:17,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:32:17,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:32:17,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:16" (1/1) ... [2022-12-13 18:32:17,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:16" (1/1) ... [2022-12-13 18:32:17,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:16" (1/1) ... [2022-12-13 18:32:17,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:16" (1/1) ... [2022-12-13 18:32:17,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:16" (1/1) ... [2022-12-13 18:32:17,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:16" (1/1) ... [2022-12-13 18:32:17,053 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:16" (1/1) ... [2022-12-13 18:32:17,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:16" (1/1) ... [2022-12-13 18:32:17,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:32:17,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:32:17,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:32:17,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:32:17,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:16" (1/1) ... [2022-12-13 18:32:17,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:32:17,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:17,087 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:32:17,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:32:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:32:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-13 18:32:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-13 18:32:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-13 18:32:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-13 18:32:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-13 18:32:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-13 18:32:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-13 18:32:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-13 18:32:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-13 18:32:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-13 18:32:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-13 18:32:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-13 18:32:17,122 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-13 18:32:17,122 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-13 18:32:17,122 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-13 18:32:17,122 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-13 18:32:17,122 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-13 18:32:17,122 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-13 18:32:17,122 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-13 18:32:17,123 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-13 18:32:17,123 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-13 18:32:17,123 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-13 18:32:17,123 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-13 18:32:17,123 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-13 18:32:17,123 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-13 18:32:17,123 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-13 18:32:17,123 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-13 18:32:17,124 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-13 18:32:17,124 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-13 18:32:17,124 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-13 18:32:17,124 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-13 18:32:17,124 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-13 18:32:17,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:32:17,124 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-13 18:32:17,124 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-13 18:32:17,125 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-13 18:32:17,125 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-13 18:32:17,125 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-13 18:32:17,125 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-13 18:32:17,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:32:17,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:32:17,125 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-13 18:32:17,126 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-13 18:32:17,237 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:32:17,239 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:32:17,920 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:32:17,932 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:32:17,932 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 18:32:17,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:32:17 BoogieIcfgContainer [2022-12-13 18:32:17,935 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:32:17,937 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:32:17,937 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:32:17,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:32:17,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:32:16" (1/3) ... [2022-12-13 18:32:17,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787f02ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:32:17, skipping insertion in model container [2022-12-13 18:32:17,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:32:16" (2/3) ... [2022-12-13 18:32:17,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787f02ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:32:17, skipping insertion in model container [2022-12-13 18:32:17,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:32:17" (3/3) ... [2022-12-13 18:32:17,943 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product01.cil.c [2022-12-13 18:32:17,958 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:32:17,959 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:32:18,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:32:18,019 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;@5bb0a908, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:32:18,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 18:32:18,025 INFO L276 IsEmpty]: Start isEmpty. Operand has 517 states, 409 states have (on average 1.7163814180929096) internal successors, (702), 430 states have internal predecessors, (702), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (86), 80 states have call predecessors, (86), 86 states have call successors, (86) [2022-12-13 18:32:18,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-12-13 18:32:18,044 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:18,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:18,045 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:18,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:18,050 INFO L85 PathProgramCache]: Analyzing trace with hash 998203465, now seen corresponding path program 1 times [2022-12-13 18:32:18,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:18,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087574781] [2022-12-13 18:32:18,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:18,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:18,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:32:18,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:18,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-12-13 18:32:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:18,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 18:32:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:18,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:18,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:18,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:18,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 18:32:18,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 18:32:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:32:18,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:18,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087574781] [2022-12-13 18:32:18,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087574781] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:32:18,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:32:18,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:32:18,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192528430] [2022-12-13 18:32:18,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:32:18,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:32:18,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:32:18,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:32:18,875 INFO L87 Difference]: Start difference. First operand has 517 states, 409 states have (on average 1.7163814180929096) internal successors, (702), 430 states have internal predecessors, (702), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (86), 80 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 18:32:25,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:25,306 INFO L93 Difference]: Finished difference Result 1472 states and 2596 transitions. [2022-12-13 18:32:25,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:32:25,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-12-13 18:32:25,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:32:25,324 INFO L225 Difference]: With dead ends: 1472 [2022-12-13 18:32:25,324 INFO L226 Difference]: Without dead ends: 967 [2022-12-13 18:32:25,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:32:25,333 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 2166 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 4743 mSolverCounterSat, 978 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2236 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 5721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 978 IncrementalHoareTripleChecker+Valid, 4743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:32:25,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2236 Valid, 2748 Invalid, 5721 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [978 Valid, 4743 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-12-13 18:32:25,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2022-12-13 18:32:25,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 511. [2022-12-13 18:32:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 405 states have (on average 1.708641975308642) internal successors, (692), 424 states have internal predecessors, (692), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2022-12-13 18:32:25,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 859 transitions. [2022-12-13 18:32:25,504 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 859 transitions. Word has length 74 [2022-12-13 18:32:25,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:32:25,505 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 859 transitions. [2022-12-13 18:32:25,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 18:32:25,506 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 859 transitions. [2022-12-13 18:32:25,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-12-13 18:32:25,512 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:25,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:25,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:32:25,513 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:25,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:25,513 INFO L85 PathProgramCache]: Analyzing trace with hash 338744733, now seen corresponding path program 1 times [2022-12-13 18:32:25,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:25,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902799438] [2022-12-13 18:32:25,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:25,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:25,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:32:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:25,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:25,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:32:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:25,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:32:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:25,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:25,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:25,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:32:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:25,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:32:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:25,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:32:25,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:25,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902799438] [2022-12-13 18:32:25,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902799438] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:32:25,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:32:25,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:32:25,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77103252] [2022-12-13 18:32:25,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:32:25,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:32:25,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:25,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:32:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:32:25,931 INFO L87 Difference]: Start difference. First operand 511 states and 859 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 18:32:31,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:31,286 INFO L93 Difference]: Finished difference Result 1297 states and 2230 transitions. [2022-12-13 18:32:31,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 18:32:31,286 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-12-13 18:32:31,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:32:31,291 INFO L225 Difference]: With dead ends: 1297 [2022-12-13 18:32:31,291 INFO L226 Difference]: Without dead ends: 804 [2022-12-13 18:32:31,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-12-13 18:32:31,293 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 1804 mSDsluCounter, 2884 mSDsCounter, 0 mSdLazyCounter, 5024 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 3406 SdHoareTripleChecker+Invalid, 5581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 5024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:32:31,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 3406 Invalid, 5581 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [557 Valid, 5024 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 18:32:31,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-12-13 18:32:31,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 515. [2022-12-13 18:32:31,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 408 states have (on average 1.7009803921568627) internal successors, (694), 427 states have internal predecessors, (694), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (83), 80 states have call predecessors, (83), 81 states have call successors, (83) [2022-12-13 18:32:31,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 863 transitions. [2022-12-13 18:32:31,385 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 863 transitions. Word has length 80 [2022-12-13 18:32:31,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:32:31,385 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 863 transitions. [2022-12-13 18:32:31,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 18:32:31,385 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 863 transitions. [2022-12-13 18:32:31,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-13 18:32:31,389 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:31,390 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:31,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:32:31,390 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:31,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:31,390 INFO L85 PathProgramCache]: Analyzing trace with hash -537802473, now seen corresponding path program 1 times [2022-12-13 18:32:31,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:31,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658398385] [2022-12-13 18:32:31,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:31,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:32:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:31,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:31,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 18:32:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:31,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-12-13 18:32:31,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:31,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:31,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:31,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:32:31,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:31,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 18:32:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:31,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:32:31,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:31,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658398385] [2022-12-13 18:32:31,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658398385] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:32:31,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:32:31,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-12-13 18:32:31,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405548230] [2022-12-13 18:32:31,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:32:31,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 18:32:31,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:31,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 18:32:31,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:32:31,748 INFO L87 Difference]: Start difference. First operand 515 states and 863 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 18:32:43,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:43,640 INFO L93 Difference]: Finished difference Result 2404 states and 4293 transitions. [2022-12-13 18:32:43,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 18:32:43,641 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2022-12-13 18:32:43,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:32:43,651 INFO L225 Difference]: With dead ends: 2404 [2022-12-13 18:32:43,651 INFO L226 Difference]: Without dead ends: 1907 [2022-12-13 18:32:43,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2022-12-13 18:32:43,655 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 3542 mSDsluCounter, 3788 mSDsCounter, 0 mSdLazyCounter, 8721 mSolverCounterSat, 1476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3618 SdHoareTripleChecker+Valid, 4390 SdHoareTripleChecker+Invalid, 10197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1476 IncrementalHoareTripleChecker+Valid, 8721 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:32:43,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3618 Valid, 4390 Invalid, 10197 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1476 Valid, 8721 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-12-13 18:32:43,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2022-12-13 18:32:43,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1350. [2022-12-13 18:32:43,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1058 states have (on average 1.658790170132325) internal successors, (1755), 1105 states have internal predecessors, (1755), 235 states have call successors, (235), 53 states have call predecessors, (235), 56 states have return successors, (269), 227 states have call predecessors, (269), 230 states have call successors, (269) [2022-12-13 18:32:43,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 2259 transitions. [2022-12-13 18:32:43,909 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 2259 transitions. Word has length 85 [2022-12-13 18:32:43,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:32:43,910 INFO L495 AbstractCegarLoop]: Abstraction has 1350 states and 2259 transitions. [2022-12-13 18:32:43,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 18:32:43,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 2259 transitions. [2022-12-13 18:32:43,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-13 18:32:43,912 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:43,912 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:43,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:32:43,912 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:43,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:43,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1116874395, now seen corresponding path program 1 times [2022-12-13 18:32:43,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:43,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811177439] [2022-12-13 18:32:43,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:43,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:43,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:44,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:32:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:44,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:44,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 18:32:44,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:44,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:32:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:44,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:44,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:44,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:44,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:32:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:44,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:32:44,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:44,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:32:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:44,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 18:32:44,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:44,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811177439] [2022-12-13 18:32:44,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811177439] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:32:44,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:32:44,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 18:32:44,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949695803] [2022-12-13 18:32:44,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:32:44,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 18:32:44,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:44,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 18:32:44,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:32:44,522 INFO L87 Difference]: Start difference. First operand 1350 states and 2259 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-12-13 18:32:55,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:55,825 INFO L93 Difference]: Finished difference Result 3487 states and 6033 transitions. [2022-12-13 18:32:55,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 18:32:55,825 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 94 [2022-12-13 18:32:55,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:32:55,834 INFO L225 Difference]: With dead ends: 3487 [2022-12-13 18:32:55,834 INFO L226 Difference]: Without dead ends: 1981 [2022-12-13 18:32:55,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2022-12-13 18:32:55,840 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 4165 mSDsluCounter, 4598 mSDsCounter, 0 mSdLazyCounter, 9582 mSolverCounterSat, 1291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4226 SdHoareTripleChecker+Valid, 5093 SdHoareTripleChecker+Invalid, 10873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1291 IncrementalHoareTripleChecker+Valid, 9582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:32:55,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4226 Valid, 5093 Invalid, 10873 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1291 Valid, 9582 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-12-13 18:32:55,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1981 states. [2022-12-13 18:32:56,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1981 to 1425. [2022-12-13 18:32:56,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1116 states have (on average 1.6281362007168458) internal successors, (1817), 1165 states have internal predecessors, (1817), 247 states have call successors, (247), 58 states have call predecessors, (247), 61 states have return successors, (290), 237 states have call predecessors, (290), 242 states have call successors, (290) [2022-12-13 18:32:56,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2354 transitions. [2022-12-13 18:32:56,135 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2354 transitions. Word has length 94 [2022-12-13 18:32:56,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:32:56,135 INFO L495 AbstractCegarLoop]: Abstraction has 1425 states and 2354 transitions. [2022-12-13 18:32:56,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-12-13 18:32:56,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2354 transitions. [2022-12-13 18:32:56,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 18:32:56,137 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:56,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:32:56,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:32:56,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:56,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:56,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1269794296, now seen corresponding path program 1 times [2022-12-13 18:32:56,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:56,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369873690] [2022-12-13 18:32:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:56,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:56,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:32:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:56,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:56,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 18:32:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:56,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 18:32:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:56,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:56,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:56,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:32:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:56,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:32:56,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:56,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:32:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:56,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:32:56,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:56,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:32:56,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:32:56,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:56,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369873690] [2022-12-13 18:32:56,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369873690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:32:56,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:32:56,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:32:56,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877418073] [2022-12-13 18:32:56,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:32:56,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:32:56,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:56,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:32:56,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:32:56,424 INFO L87 Difference]: Start difference. First operand 1425 states and 2354 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:01,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:01,397 INFO L93 Difference]: Finished difference Result 3366 states and 5735 transitions. [2022-12-13 18:33:01,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:33:01,397 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2022-12-13 18:33:01,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:01,405 INFO L225 Difference]: With dead ends: 3366 [2022-12-13 18:33:01,405 INFO L226 Difference]: Without dead ends: 1959 [2022-12-13 18:33:01,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:33:01,409 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1694 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 2634 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1764 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 3144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 2634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:01,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1764 Valid, 1748 Invalid, 3144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 2634 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-12-13 18:33:01,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2022-12-13 18:33:01,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1425. [2022-12-13 18:33:01,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1116 states have (on average 1.6272401433691757) internal successors, (1816), 1165 states have internal predecessors, (1816), 247 states have call successors, (247), 58 states have call predecessors, (247), 61 states have return successors, (290), 237 states have call predecessors, (290), 242 states have call successors, (290) [2022-12-13 18:33:01,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2353 transitions. [2022-12-13 18:33:01,747 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2353 transitions. Word has length 97 [2022-12-13 18:33:01,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:01,748 INFO L495 AbstractCegarLoop]: Abstraction has 1425 states and 2353 transitions. [2022-12-13 18:33:01,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:01,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2353 transitions. [2022-12-13 18:33:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-13 18:33:01,750 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:01,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:01,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:33:01,751 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:01,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:01,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1191789461, now seen corresponding path program 1 times [2022-12-13 18:33:01,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:01,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065811625] [2022-12-13 18:33:01,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:01,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:01,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:33:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:01,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:01,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:33:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:33:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:02,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:33:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:33:02,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:33:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:33:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:33:02,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:02,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065811625] [2022-12-13 18:33:02,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065811625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:33:02,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:33:02,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 18:33:02,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780872840] [2022-12-13 18:33:02,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:33:02,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 18:33:02,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:02,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 18:33:02,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:33:02,160 INFO L87 Difference]: Start difference. First operand 1425 states and 2353 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:33:09,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:09,074 INFO L93 Difference]: Finished difference Result 3466 states and 6002 transitions. [2022-12-13 18:33:09,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 18:33:09,074 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-12-13 18:33:09,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:09,089 INFO L225 Difference]: With dead ends: 3466 [2022-12-13 18:33:09,089 INFO L226 Difference]: Without dead ends: 2099 [2022-12-13 18:33:09,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-12-13 18:33:09,096 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 1644 mSDsluCounter, 4086 mSDsCounter, 0 mSdLazyCounter, 6316 mSolverCounterSat, 471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 4623 SdHoareTripleChecker+Invalid, 6787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 471 IncrementalHoareTripleChecker+Valid, 6316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:09,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 4623 Invalid, 6787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [471 Valid, 6316 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-12-13 18:33:09,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2099 states. [2022-12-13 18:33:09,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2099 to 1449. [2022-12-13 18:33:09,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1128 states have (on average 1.6161347517730495) internal successors, (1823), 1185 states have internal predecessors, (1823), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-12-13 18:33:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2396 transitions. [2022-12-13 18:33:09,553 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2396 transitions. Word has length 98 [2022-12-13 18:33:09,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:09,553 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 2396 transitions. [2022-12-13 18:33:09,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:33:09,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2396 transitions. [2022-12-13 18:33:09,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 18:33:09,557 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:09,557 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:09,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:33:09,557 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:09,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:09,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1030401576, now seen corresponding path program 1 times [2022-12-13 18:33:09,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:09,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574643431] [2022-12-13 18:33:09,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:09,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:33:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:33:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 18:33:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:09,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:33:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:33:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:33:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:33:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:33:09,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:09,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574643431] [2022-12-13 18:33:09,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574643431] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:33:09,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:33:09,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:33:09,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196393847] [2022-12-13 18:33:09,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:33:09,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:33:09,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:09,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:33:09,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:33:09,868 INFO L87 Difference]: Start difference. First operand 1449 states and 2396 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:14,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:14,438 INFO L93 Difference]: Finished difference Result 3382 states and 5790 transitions. [2022-12-13 18:33:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:33:14,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2022-12-13 18:33:14,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:14,447 INFO L225 Difference]: With dead ends: 3382 [2022-12-13 18:33:14,447 INFO L226 Difference]: Without dead ends: 1991 [2022-12-13 18:33:14,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:33:14,451 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1005 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1075 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 3040 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:14,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1075 Valid, 1882 Invalid, 3040 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 18:33:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2022-12-13 18:33:14,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1449. [2022-12-13 18:33:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1128 states have (on average 1.6117021276595744) internal successors, (1818), 1185 states have internal predecessors, (1818), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-12-13 18:33:14,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2391 transitions. [2022-12-13 18:33:14,850 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2391 transitions. Word has length 99 [2022-12-13 18:33:14,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:14,850 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 2391 transitions. [2022-12-13 18:33:14,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:14,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2391 transitions. [2022-12-13 18:33:14,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-13 18:33:14,853 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:14,853 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:14,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:33:14,854 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:14,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:14,854 INFO L85 PathProgramCache]: Analyzing trace with hash 434132679, now seen corresponding path program 1 times [2022-12-13 18:33:14,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:14,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039432306] [2022-12-13 18:33:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:14,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:14,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:33:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:15,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:15,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:33:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:15,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:33:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:15,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:15,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:33:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:15,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:33:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:15,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:33:15,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:15,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:33:15,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:33:15,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:15,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039432306] [2022-12-13 18:33:15,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039432306] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:33:15,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:33:15,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:33:15,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549619026] [2022-12-13 18:33:15,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:33:15,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:33:15,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:15,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:33:15,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:33:15,187 INFO L87 Difference]: Start difference. First operand 1449 states and 2391 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:20,264 INFO L93 Difference]: Finished difference Result 3382 states and 5785 transitions. [2022-12-13 18:33:20,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:33:20,265 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2022-12-13 18:33:20,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:20,274 INFO L225 Difference]: With dead ends: 3382 [2022-12-13 18:33:20,274 INFO L226 Difference]: Without dead ends: 1991 [2022-12-13 18:33:20,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:33:20,278 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 994 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 3012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:20,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1064 Valid, 1899 Invalid, 3012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2770 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 18:33:20,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2022-12-13 18:33:20,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1449. [2022-12-13 18:33:20,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1128 states have (on average 1.6072695035460993) internal successors, (1813), 1185 states have internal predecessors, (1813), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-12-13 18:33:20,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2386 transitions. [2022-12-13 18:33:20,605 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2386 transitions. Word has length 100 [2022-12-13 18:33:20,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:20,605 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 2386 transitions. [2022-12-13 18:33:20,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:20,605 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2386 transitions. [2022-12-13 18:33:20,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 18:33:20,607 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:20,607 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:20,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:33:20,607 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:20,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:20,608 INFO L85 PathProgramCache]: Analyzing trace with hash 808111443, now seen corresponding path program 1 times [2022-12-13 18:33:20,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:20,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258281366] [2022-12-13 18:33:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:20,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:20,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:33:20,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:20,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:20,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:20,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:33:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:20,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:33:20,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:20,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:20,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:20,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:33:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:33:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:20,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:33:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:20,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:33:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:20,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:33:20,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:20,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258281366] [2022-12-13 18:33:20,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258281366] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:33:20,873 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:33:20,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:33:20,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108883744] [2022-12-13 18:33:20,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:33:20,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:33:20,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:20,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:33:20,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:33:20,874 INFO L87 Difference]: Start difference. First operand 1449 states and 2386 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:25,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:25,487 INFO L93 Difference]: Finished difference Result 3382 states and 5780 transitions. [2022-12-13 18:33:25,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:33:25,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2022-12-13 18:33:25,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:25,495 INFO L225 Difference]: With dead ends: 3382 [2022-12-13 18:33:25,496 INFO L226 Difference]: Without dead ends: 1991 [2022-12-13 18:33:25,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:33:25,499 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 1393 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 2546 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 2921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:25,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 1812 Invalid, 2921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2546 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 18:33:25,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2022-12-13 18:33:25,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1449. [2022-12-13 18:33:25,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1128 states have (on average 1.6028368794326242) internal successors, (1808), 1185 states have internal predecessors, (1808), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-12-13 18:33:25,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2381 transitions. [2022-12-13 18:33:25,815 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2381 transitions. Word has length 101 [2022-12-13 18:33:25,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:25,815 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 2381 transitions. [2022-12-13 18:33:25,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:25,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2381 transitions. [2022-12-13 18:33:25,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 18:33:25,817 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:25,817 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:25,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:33:25,817 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:25,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:25,818 INFO L85 PathProgramCache]: Analyzing trace with hash -9204078, now seen corresponding path program 1 times [2022-12-13 18:33:25,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:25,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509042639] [2022-12-13 18:33:25,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:25,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:25,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:33:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:25,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:25,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:33:25,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:26,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 18:33:26,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:26,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:26,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:26,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:33:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:26,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:33:26,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:26,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:33:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:26,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:33:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:26,073 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:33:26,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:26,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509042639] [2022-12-13 18:33:26,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509042639] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:33:26,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:33:26,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:33:26,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087723303] [2022-12-13 18:33:26,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:33:26,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:33:26,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:26,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:33:26,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:33:26,074 INFO L87 Difference]: Start difference. First operand 1449 states and 2381 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:30,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:30,874 INFO L93 Difference]: Finished difference Result 3397 states and 5795 transitions. [2022-12-13 18:33:30,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:33:30,875 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2022-12-13 18:33:30,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:30,884 INFO L225 Difference]: With dead ends: 3397 [2022-12-13 18:33:30,884 INFO L226 Difference]: Without dead ends: 2012 [2022-12-13 18:33:30,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:33:30,888 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1763 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 2500 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 3011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 2500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:30,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 1757 Invalid, 3011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 2500 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 18:33:30,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2022-12-13 18:33:31,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 1451. [2022-12-13 18:33:31,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1130 states have (on average 1.6017699115044248) internal successors, (1810), 1187 states have internal predecessors, (1810), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-12-13 18:33:31,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 2383 transitions. [2022-12-13 18:33:31,204 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 2383 transitions. Word has length 101 [2022-12-13 18:33:31,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:31,204 INFO L495 AbstractCegarLoop]: Abstraction has 1451 states and 2383 transitions. [2022-12-13 18:33:31,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:31,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 2383 transitions. [2022-12-13 18:33:31,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:33:31,206 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:31,206 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:31,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:33:31,206 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:31,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:31,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1734608354, now seen corresponding path program 1 times [2022-12-13 18:33:31,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:31,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792966970] [2022-12-13 18:33:31,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:31,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:31,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:31,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:33:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:31,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:31,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:33:31,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:33:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:31,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:31,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:31,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:33:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:31,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:33:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:31,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:33:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:33:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:31,464 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:33:31,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:31,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792966970] [2022-12-13 18:33:31,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792966970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:33:31,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:33:31,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:33:31,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259188714] [2022-12-13 18:33:31,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:33:31,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:33:31,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:31,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:33:31,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:33:31,466 INFO L87 Difference]: Start difference. First operand 1451 states and 2383 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:35,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:35,964 INFO L93 Difference]: Finished difference Result 3388 states and 5781 transitions. [2022-12-13 18:33:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:33:35,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-12-13 18:33:35,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:35,972 INFO L225 Difference]: With dead ends: 3388 [2022-12-13 18:33:35,972 INFO L226 Difference]: Without dead ends: 1995 [2022-12-13 18:33:35,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:33:35,975 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1381 mSDsluCounter, 1324 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:35,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 1806 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-12-13 18:33:35,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2022-12-13 18:33:36,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 1451. [2022-12-13 18:33:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1451 states, 1130 states have (on average 1.5973451327433628) internal successors, (1805), 1187 states have internal predecessors, (1805), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-12-13 18:33:36,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1451 states to 1451 states and 2378 transitions. [2022-12-13 18:33:36,301 INFO L78 Accepts]: Start accepts. Automaton has 1451 states and 2378 transitions. Word has length 102 [2022-12-13 18:33:36,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:36,301 INFO L495 AbstractCegarLoop]: Abstraction has 1451 states and 2378 transitions. [2022-12-13 18:33:36,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:36,301 INFO L276 IsEmpty]: Start isEmpty. Operand 1451 states and 2378 transitions. [2022-12-13 18:33:36,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:33:36,303 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:36,303 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:36,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:33:36,303 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1520438971, now seen corresponding path program 1 times [2022-12-13 18:33:36,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:36,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942676968] [2022-12-13 18:33:36,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:36,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:36,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:33:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:36,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:36,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:33:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:36,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:33:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:36,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:36,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:36,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:33:36,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:36,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:33:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:36,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:33:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:36,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:33:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:36,593 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:33:36,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:36,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942676968] [2022-12-13 18:33:36,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942676968] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:33:36,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:33:36,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:33:36,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108724211] [2022-12-13 18:33:36,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:33:36,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:33:36,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:36,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:33:36,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:33:36,594 INFO L87 Difference]: Start difference. First operand 1451 states and 2378 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:41,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:41,977 INFO L93 Difference]: Finished difference Result 3401 states and 5792 transitions. [2022-12-13 18:33:41,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:33:41,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-12-13 18:33:41,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:41,988 INFO L225 Difference]: With dead ends: 3401 [2022-12-13 18:33:41,988 INFO L226 Difference]: Without dead ends: 2016 [2022-12-13 18:33:41,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:33:41,991 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 1770 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 2473 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1840 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 2988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 2473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:41,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1840 Valid, 1748 Invalid, 2988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 2473 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-12-13 18:33:41,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2022-12-13 18:33:42,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 1454. [2022-12-13 18:33:42,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1133 states have (on average 1.5957634598411297) internal successors, (1808), 1190 states have internal predecessors, (1808), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-12-13 18:33:42,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 2381 transitions. [2022-12-13 18:33:42,343 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 2381 transitions. Word has length 102 [2022-12-13 18:33:42,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:42,343 INFO L495 AbstractCegarLoop]: Abstraction has 1454 states and 2381 transitions. [2022-12-13 18:33:42,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:42,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 2381 transitions. [2022-12-13 18:33:42,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 18:33:42,345 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:42,345 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:42,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:33:42,345 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:42,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:42,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1685668658, now seen corresponding path program 1 times [2022-12-13 18:33:42,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:42,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878967372] [2022-12-13 18:33:42,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:42,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:42,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:42,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:33:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:42,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:33:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:42,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 18:33:42,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:42,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:42,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:42,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:33:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:42,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:33:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:42,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:33:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:42,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:33:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:33:42,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:42,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878967372] [2022-12-13 18:33:42,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878967372] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:33:42,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:33:42,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:33:42,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403416501] [2022-12-13 18:33:42,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:33:42,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:33:42,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:42,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:33:42,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:33:42,636 INFO L87 Difference]: Start difference. First operand 1454 states and 2381 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:47,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:47,303 INFO L93 Difference]: Finished difference Result 3437 states and 5835 transitions. [2022-12-13 18:33:47,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:33:47,304 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2022-12-13 18:33:47,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:47,313 INFO L225 Difference]: With dead ends: 3437 [2022-12-13 18:33:47,313 INFO L226 Difference]: Without dead ends: 2001 [2022-12-13 18:33:47,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:33:47,317 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1277 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 2565 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1347 SdHoareTripleChecker+Valid, 1816 SdHoareTripleChecker+Invalid, 2937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 2565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:47,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1347 Valid, 1816 Invalid, 2937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 2565 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 18:33:47,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2022-12-13 18:33:47,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 1454. [2022-12-13 18:33:47,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1454 states, 1133 states have (on average 1.5948808473080318) internal successors, (1807), 1190 states have internal predecessors, (1807), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-12-13 18:33:47,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 2380 transitions. [2022-12-13 18:33:47,669 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 2380 transitions. Word has length 103 [2022-12-13 18:33:47,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:47,669 INFO L495 AbstractCegarLoop]: Abstraction has 1454 states and 2380 transitions. [2022-12-13 18:33:47,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-12-13 18:33:47,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 2380 transitions. [2022-12-13 18:33:47,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 18:33:47,671 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:47,671 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:47,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:33:47,671 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:47,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:47,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1441102383, now seen corresponding path program 1 times [2022-12-13 18:33:47,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:47,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200883267] [2022-12-13 18:33:47,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:47,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:47,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:47,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:33:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:47,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:47,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:33:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:47,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 18:33:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:48,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:48,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:48,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:48,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:48,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:33:48,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:48,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:33:48,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:48,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:33:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:48,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:33:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:48,048 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:33:48,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:48,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200883267] [2022-12-13 18:33:48,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200883267] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:33:48,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:33:48,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 18:33:48,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834431753] [2022-12-13 18:33:48,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:33:48,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 18:33:48,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:48,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 18:33:48,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:33:48,050 INFO L87 Difference]: Start difference. First operand 1454 states and 2380 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:33:53,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:53,737 INFO L93 Difference]: Finished difference Result 3397 states and 5785 transitions. [2022-12-13 18:33:53,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:33:53,738 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-12-13 18:33:53,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:53,746 INFO L225 Difference]: With dead ends: 3397 [2022-12-13 18:33:53,746 INFO L226 Difference]: Without dead ends: 1991 [2022-12-13 18:33:53,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-12-13 18:33:53,749 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1394 mSDsluCounter, 3665 mSDsCounter, 0 mSdLazyCounter, 6205 mSolverCounterSat, 381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 4148 SdHoareTripleChecker+Invalid, 6586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 381 IncrementalHoareTripleChecker+Valid, 6205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:53,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 4148 Invalid, 6586 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [381 Valid, 6205 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 18:33:53,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2022-12-13 18:33:54,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1446. [2022-12-13 18:33:54,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1125 states have (on average 1.5964444444444446) internal successors, (1796), 1182 states have internal predecessors, (1796), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-12-13 18:33:54,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 2369 transitions. [2022-12-13 18:33:54,136 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 2369 transitions. Word has length 103 [2022-12-13 18:33:54,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:54,136 INFO L495 AbstractCegarLoop]: Abstraction has 1446 states and 2369 transitions. [2022-12-13 18:33:54,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:33:54,137 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 2369 transitions. [2022-12-13 18:33:54,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 18:33:54,138 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:54,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:33:54,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:33:54,138 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:54,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:54,138 INFO L85 PathProgramCache]: Analyzing trace with hash 47458990, now seen corresponding path program 1 times [2022-12-13 18:33:54,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:54,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563659275] [2022-12-13 18:33:54,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:54,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:54,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:33:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:54,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:54,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:33:54,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:54,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 18:33:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:54,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:54,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:33:54,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:54,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:33:54,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:54,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:33:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:54,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:33:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:54,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:33:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:33:54,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:54,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563659275] [2022-12-13 18:33:54,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563659275] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:33:54,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:33:54,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:33:54,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290831841] [2022-12-13 18:33:54,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:33:54,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:33:54,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:54,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:33:54,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:33:54,454 INFO L87 Difference]: Start difference. First operand 1446 states and 2369 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:34:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:34:00,828 INFO L93 Difference]: Finished difference Result 3397 states and 5781 transitions. [2022-12-13 18:34:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:34:00,829 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-12-13 18:34:00,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:34:00,837 INFO L225 Difference]: With dead ends: 3397 [2022-12-13 18:34:00,837 INFO L226 Difference]: Without dead ends: 2012 [2022-12-13 18:34:00,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 18:34:00,841 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1723 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 4562 mSolverCounterSat, 514 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1793 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 5076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 514 IncrementalHoareTripleChecker+Valid, 4562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:34:00,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1793 Valid, 3182 Invalid, 5076 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [514 Valid, 4562 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-12-13 18:34:00,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2012 states. [2022-12-13 18:34:01,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2012 to 1450. [2022-12-13 18:34:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1129 states have (on average 1.5943312666076173) internal successors, (1800), 1186 states have internal predecessors, (1800), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-12-13 18:34:01,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2373 transitions. [2022-12-13 18:34:01,216 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2373 transitions. Word has length 103 [2022-12-13 18:34:01,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:34:01,217 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 2373 transitions. [2022-12-13 18:34:01,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:34:01,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2373 transitions. [2022-12-13 18:34:01,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 18:34:01,218 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:34:01,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:34:01,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 18:34:01,218 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:34:01,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:01,219 INFO L85 PathProgramCache]: Analyzing trace with hash 620620127, now seen corresponding path program 1 times [2022-12-13 18:34:01,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:01,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606654759] [2022-12-13 18:34:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:01,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:01,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:34:01,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:01,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:01,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:01,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:34:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:01,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 18:34:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:01,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:01,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:01,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:01,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:34:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:01,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:34:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:01,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:34:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:01,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:34:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:34:01,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:01,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606654759] [2022-12-13 18:34:01,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606654759] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:34:01,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:34:01,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:34:01,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065580874] [2022-12-13 18:34:01,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:34:01,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:34:01,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:01,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:34:01,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:34:01,574 INFO L87 Difference]: Start difference. First operand 1450 states and 2373 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:34:07,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:34:07,702 INFO L93 Difference]: Finished difference Result 3405 states and 5787 transitions. [2022-12-13 18:34:07,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 18:34:07,702 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2022-12-13 18:34:07,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:34:07,710 INFO L225 Difference]: With dead ends: 3405 [2022-12-13 18:34:07,710 INFO L226 Difference]: Without dead ends: 2020 [2022-12-13 18:34:07,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-12-13 18:34:07,713 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1330 mSDsluCounter, 2754 mSDsCounter, 0 mSdLazyCounter, 4717 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 3235 SdHoareTripleChecker+Invalid, 5100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 4717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:34:07,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 3235 Invalid, 5100 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [383 Valid, 4717 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-12-13 18:34:07,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2022-12-13 18:34:08,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 1455. [2022-12-13 18:34:08,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1134 states have (on average 1.591710758377425) internal successors, (1805), 1191 states have internal predecessors, (1805), 251 states have call successors, (251), 58 states have call predecessors, (251), 69 states have return successors, (322), 241 states have call predecessors, (322), 246 states have call successors, (322) [2022-12-13 18:34:08,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 2378 transitions. [2022-12-13 18:34:08,104 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 2378 transitions. Word has length 104 [2022-12-13 18:34:08,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:34:08,104 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 2378 transitions. [2022-12-13 18:34:08,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-12-13 18:34:08,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 2378 transitions. [2022-12-13 18:34:08,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-13 18:34:08,107 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:34:08,107 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:34:08,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 18:34:08,107 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:34:08,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:08,107 INFO L85 PathProgramCache]: Analyzing trace with hash 924559641, now seen corresponding path program 1 times [2022-12-13 18:34:08,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:08,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069933349] [2022-12-13 18:34:08,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:08,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:08,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:08,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:34:08,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:08,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:08,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:34:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:08,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:34:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:08,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:08,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:08,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:34:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:08,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:34:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:34:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:08,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:34:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:08,626 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:34:08,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:08,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069933349] [2022-12-13 18:34:08,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069933349] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:34:08,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:34:08,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 18:34:08,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78276120] [2022-12-13 18:34:08,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:34:08,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 18:34:08,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:08,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 18:34:08,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:34:08,628 INFO L87 Difference]: Start difference. First operand 1455 states and 2378 transitions. Second operand has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-13 18:34:32,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:34:32,105 INFO L93 Difference]: Finished difference Result 5792 states and 10221 transitions. [2022-12-13 18:34:32,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-13 18:34:32,106 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 105 [2022-12-13 18:34:32,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:34:32,121 INFO L225 Difference]: With dead ends: 5792 [2022-12-13 18:34:32,121 INFO L226 Difference]: Without dead ends: 4415 [2022-12-13 18:34:32,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1894 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=891, Invalid=4659, Unknown=0, NotChecked=0, Total=5550 [2022-12-13 18:34:32,127 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 8915 mSDsluCounter, 6523 mSDsCounter, 0 mSdLazyCounter, 17116 mSolverCounterSat, 3742 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8988 SdHoareTripleChecker+Valid, 7377 SdHoareTripleChecker+Invalid, 20858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3742 IncrementalHoareTripleChecker+Valid, 17116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:34:32,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8988 Valid, 7377 Invalid, 20858 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3742 Valid, 17116 Invalid, 0 Unknown, 0 Unchecked, 16.6s Time] [2022-12-13 18:34:32,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2022-12-13 18:34:32,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 3026. [2022-12-13 18:34:33,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3026 states, 2362 states have (on average 1.5787468247248095) internal successors, (3729), 2480 states have internal predecessors, (3729), 512 states have call successors, (512), 118 states have call predecessors, (512), 151 states have return successors, (687), 499 states have call predecessors, (687), 507 states have call successors, (687) [2022-12-13 18:34:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 4928 transitions. [2022-12-13 18:34:33,009 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 4928 transitions. Word has length 105 [2022-12-13 18:34:33,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:34:33,010 INFO L495 AbstractCegarLoop]: Abstraction has 3026 states and 4928 transitions. [2022-12-13 18:34:33,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-12-13 18:34:33,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 4928 transitions. [2022-12-13 18:34:33,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-12-13 18:34:33,011 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:34:33,011 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:34:33,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 18:34:33,011 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:34:33,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:33,011 INFO L85 PathProgramCache]: Analyzing trace with hash -688289718, now seen corresponding path program 1 times [2022-12-13 18:34:33,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:33,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339227308] [2022-12-13 18:34:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:33,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:34:33,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:34:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:34:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:34:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:34:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:34:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:34:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,402 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 18:34:33,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:33,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339227308] [2022-12-13 18:34:33,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339227308] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:34:33,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552268034] [2022-12-13 18:34:33,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:33,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:34:33,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:34:33,403 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:34:33,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:34:33,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:33,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:34:33,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:34:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:34:33,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:34:33,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552268034] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:34:33,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:34:33,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2022-12-13 18:34:33,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209945848] [2022-12-13 18:34:33,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:34:33,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:34:33,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:33,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:34:33,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:34:33,695 INFO L87 Difference]: Start difference. First operand 3026 states and 4928 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-12-13 18:34:34,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:34:34,928 INFO L93 Difference]: Finished difference Result 3142 states and 5115 transitions. [2022-12-13 18:34:34,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:34:34,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 106 [2022-12-13 18:34:34,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:34:34,945 INFO L225 Difference]: With dead ends: 3142 [2022-12-13 18:34:34,945 INFO L226 Difference]: Without dead ends: 3127 [2022-12-13 18:34:34,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:34:34,947 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 751 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 759 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:34:34,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [759 Valid, 2073 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:34:34,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2022-12-13 18:34:35,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 3035. [2022-12-13 18:34:35,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 2371 states have (on average 1.5765499789118516) internal successors, (3738), 2489 states have internal predecessors, (3738), 512 states have call successors, (512), 118 states have call predecessors, (512), 151 states have return successors, (687), 499 states have call predecessors, (687), 507 states have call successors, (687) [2022-12-13 18:34:35,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 4937 transitions. [2022-12-13 18:34:35,905 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 4937 transitions. Word has length 106 [2022-12-13 18:34:35,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:34:35,905 INFO L495 AbstractCegarLoop]: Abstraction has 3035 states and 4937 transitions. [2022-12-13 18:34:35,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-12-13 18:34:35,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 4937 transitions. [2022-12-13 18:34:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 18:34:35,908 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:34:35,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:34:35,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:34:36,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-13 18:34:36,110 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:34:36,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:36,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1200184603, now seen corresponding path program 1 times [2022-12-13 18:34:36,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:36,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916806401] [2022-12-13 18:34:36,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:36,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:36,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:34:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:36,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:36,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:34:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:36,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:34:36,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:36,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:36,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:36,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:36,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:34:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:36,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:34:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:36,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:34:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:36,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:34:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:36,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:34:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:36,471 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 18:34:36,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:36,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916806401] [2022-12-13 18:34:36,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916806401] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:34:36,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:34:36,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:34:36,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999960157] [2022-12-13 18:34:36,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:34:36,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:34:36,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:36,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:34:36,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:34:36,473 INFO L87 Difference]: Start difference. First operand 3035 states and 4937 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 18:34:46,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:34:46,567 INFO L93 Difference]: Finished difference Result 4143 states and 7135 transitions. [2022-12-13 18:34:46,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-13 18:34:46,567 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-12-13 18:34:46,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:34:46,583 INFO L225 Difference]: With dead ends: 4143 [2022-12-13 18:34:46,583 INFO L226 Difference]: Without dead ends: 4128 [2022-12-13 18:34:46,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2022-12-13 18:34:46,586 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 2477 mSDsluCounter, 2160 mSDsCounter, 0 mSdLazyCounter, 5238 mSolverCounterSat, 868 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2542 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 6106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 868 IncrementalHoareTripleChecker+Valid, 5238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:34:46,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2542 Valid, 2668 Invalid, 6106 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [868 Valid, 5238 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-12-13 18:34:46,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2022-12-13 18:34:47,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 3035. [2022-12-13 18:34:47,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 2371 states have (on average 1.5735976381273724) internal successors, (3731), 2489 states have internal predecessors, (3731), 512 states have call successors, (512), 118 states have call predecessors, (512), 151 states have return successors, (687), 499 states have call predecessors, (687), 507 states have call successors, (687) [2022-12-13 18:34:47,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 4930 transitions. [2022-12-13 18:34:47,535 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 4930 transitions. Word has length 112 [2022-12-13 18:34:47,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:34:47,535 INFO L495 AbstractCegarLoop]: Abstraction has 3035 states and 4930 transitions. [2022-12-13 18:34:47,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-12-13 18:34:47,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 4930 transitions. [2022-12-13 18:34:47,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 18:34:47,536 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:34:47,536 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 18:34:47,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 18:34:47,537 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:34:47,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:47,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1335975161, now seen corresponding path program 1 times [2022-12-13 18:34:47,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:47,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264271837] [2022-12-13 18:34:47,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:47,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:47,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:34:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:47,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:47,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:34:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:47,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:34:47,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:47,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:34:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:47,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:34:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:47,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:34:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:47,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:34:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:47,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:34:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:47,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:34:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:47,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:34:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 18:34:47,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:47,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264271837] [2022-12-13 18:34:47,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264271837] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:34:47,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:34:47,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 18:34:47,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255007655] [2022-12-13 18:34:47,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:34:47,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 18:34:47,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:47,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 18:34:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:34:47,947 INFO L87 Difference]: Start difference. First operand 3035 states and 4930 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 18:35:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:35:03,869 INFO L93 Difference]: Finished difference Result 7903 states and 13608 transitions. [2022-12-13 18:35:03,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-13 18:35:03,870 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 123 [2022-12-13 18:35:03,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:35:03,893 INFO L225 Difference]: With dead ends: 7903 [2022-12-13 18:35:03,893 INFO L226 Difference]: Without dead ends: 4954 [2022-12-13 18:35:03,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=370, Invalid=1610, Unknown=0, NotChecked=0, Total=1980 [2022-12-13 18:35:03,906 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 6646 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 8854 mSolverCounterSat, 3259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6647 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 12113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3259 IncrementalHoareTripleChecker+Valid, 8854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:35:03,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6647 Valid, 2576 Invalid, 12113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3259 Valid, 8854 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-12-13 18:35:03,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4954 states. [2022-12-13 18:35:04,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4954 to 3051. [2022-12-13 18:35:04,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3051 states, 2383 states have (on average 1.5669324381032312) internal successors, (3734), 2501 states have internal predecessors, (3734), 512 states have call successors, (512), 118 states have call predecessors, (512), 155 states have return successors, (728), 503 states have call predecessors, (728), 507 states have call successors, (728) [2022-12-13 18:35:04,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 4974 transitions. [2022-12-13 18:35:04,940 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 4974 transitions. Word has length 123 [2022-12-13 18:35:04,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:35:04,940 INFO L495 AbstractCegarLoop]: Abstraction has 3051 states and 4974 transitions. [2022-12-13 18:35:04,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 18:35:04,940 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 4974 transitions. [2022-12-13 18:35:04,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-12-13 18:35:04,941 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:35:04,941 INFO L195 NwaCegarLoop]: trace histogram [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 18:35:04,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 18:35:04,942 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:35:04,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:35:04,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1432026268, now seen corresponding path program 1 times [2022-12-13 18:35:04,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:35:04,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971449962] [2022-12-13 18:35:04,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:35:04,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:35:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:05,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:35:05,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:05,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:35:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:05,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:35:05,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:05,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:35:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:05,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:35:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:05,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:35:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:05,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:35:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:05,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:35:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:05,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:35:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:05,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:35:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:05,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:35:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:05,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:35:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 18:35:05,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:35:05,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971449962] [2022-12-13 18:35:05,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971449962] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:35:05,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:35:05,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 18:35:05,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131272592] [2022-12-13 18:35:05,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:35:05,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:35:05,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:35:05,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:35:05,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:35:05,236 INFO L87 Difference]: Start difference. First operand 3051 states and 4974 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 18:35:35,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:35:35,127 INFO L93 Difference]: Finished difference Result 15382 states and 28143 transitions. [2022-12-13 18:35:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-13 18:35:35,128 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 124 [2022-12-13 18:35:35,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:35:35,193 INFO L225 Difference]: With dead ends: 15382 [2022-12-13 18:35:35,194 INFO L226 Difference]: Without dead ends: 12417 [2022-12-13 18:35:35,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=539, Invalid=1813, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 18:35:35,212 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 9181 mSDsluCounter, 2357 mSDsCounter, 0 mSdLazyCounter, 10310 mSolverCounterSat, 5424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9246 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 15734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5424 IncrementalHoareTripleChecker+Valid, 10310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:35:35,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9246 Valid, 3004 Invalid, 15734 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5424 Valid, 10310 Invalid, 0 Unknown, 0 Unchecked, 20.2s Time] [2022-12-13 18:35:35,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12417 states. [2022-12-13 18:35:38,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12417 to 8022. [2022-12-13 18:35:38,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8022 states, 5961 states have (on average 1.5502432477772186) internal successors, (9241), 6380 states have internal predecessors, (9241), 1723 states have call successors, (1723), 230 states have call predecessors, (1723), 337 states have return successors, (2666), 1699 states have call predecessors, (2666), 1718 states have call successors, (2666) [2022-12-13 18:35:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8022 states to 8022 states and 13630 transitions. [2022-12-13 18:35:38,744 INFO L78 Accepts]: Start accepts. Automaton has 8022 states and 13630 transitions. Word has length 124 [2022-12-13 18:35:38,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:35:38,744 INFO L495 AbstractCegarLoop]: Abstraction has 8022 states and 13630 transitions. [2022-12-13 18:35:38,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-12-13 18:35:38,744 INFO L276 IsEmpty]: Start isEmpty. Operand 8022 states and 13630 transitions. [2022-12-13 18:35:38,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-13 18:35:38,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:35:38,747 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:35:38,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 18:35:38,747 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:35:38,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:35:38,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1811653656, now seen corresponding path program 1 times [2022-12-13 18:35:38,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:35:38,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459231029] [2022-12-13 18:35:38,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:35:38,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:35:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:38,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:35:38,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:38,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:35:38,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:38,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:35:38,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:38,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:35:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:39,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:35:39,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:39,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:35:39,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:39,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:35:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:39,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-12-13 18:35:39,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:39,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 18:35:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:39,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:35:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:39,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:35:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:39,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:35:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:39,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 18:35:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:39,120 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 18:35:39,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:35:39,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459231029] [2022-12-13 18:35:39,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459231029] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:35:39,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [862857083] [2022-12-13 18:35:39,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:35:39,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:35:39,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:35:39,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:35:39,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:35:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:39,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 18:35:39,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:35:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 18:35:39,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:35:39,615 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 18:35:39,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [862857083] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:35:39,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:35:39,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 13 [2022-12-13 18:35:39,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793885073] [2022-12-13 18:35:39,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:35:39,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:35:39,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:35:39,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:35:39,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:35:39,617 INFO L87 Difference]: Start difference. First operand 8022 states and 13630 transitions. Second operand has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-12-13 18:35:58,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:35:58,349 INFO L93 Difference]: Finished difference Result 20865 states and 37693 transitions. [2022-12-13 18:35:58,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 18:35:58,350 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 132 [2022-12-13 18:35:58,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:35:58,411 INFO L225 Difference]: With dead ends: 20865 [2022-12-13 18:35:58,411 INFO L226 Difference]: Without dead ends: 12925 [2022-12-13 18:35:58,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2022-12-13 18:35:58,438 INFO L413 NwaCegarLoop]: 626 mSDtfsCounter, 3899 mSDsluCounter, 3007 mSDsCounter, 0 mSdLazyCounter, 7181 mSolverCounterSat, 1405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3958 SdHoareTripleChecker+Valid, 3633 SdHoareTripleChecker+Invalid, 8586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1405 IncrementalHoareTripleChecker+Valid, 7181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:35:58,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3958 Valid, 3633 Invalid, 8586 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1405 Valid, 7181 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-12-13 18:35:58,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12925 states. [2022-12-13 18:36:02,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12925 to 8984. [2022-12-13 18:36:02,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8984 states, 6711 states have (on average 1.5401579496349278) internal successors, (10336), 7163 states have internal predecessors, (10336), 1875 states have call successors, (1875), 270 states have call predecessors, (1875), 397 states have return successors, (2933), 1841 states have call predecessors, (2933), 1870 states have call successors, (2933) [2022-12-13 18:36:02,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8984 states to 8984 states and 15144 transitions. [2022-12-13 18:36:02,239 INFO L78 Accepts]: Start accepts. Automaton has 8984 states and 15144 transitions. Word has length 132 [2022-12-13 18:36:02,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:36:02,239 INFO L495 AbstractCegarLoop]: Abstraction has 8984 states and 15144 transitions. [2022-12-13 18:36:02,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-12-13 18:36:02,240 INFO L276 IsEmpty]: Start isEmpty. Operand 8984 states and 15144 transitions. [2022-12-13 18:36:02,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-12-13 18:36:02,242 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:36:02,242 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:36:02,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:36:02,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:36:02,444 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:36:02,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:36:02,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1594702217, now seen corresponding path program 1 times [2022-12-13 18:36:02,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:36:02,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778799875] [2022-12-13 18:36:02,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:36:02,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:36:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:02,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:36:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:02,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:36:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:02,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:36:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:02,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:36:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:36:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:36:02,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:02,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:36:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:36:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:36:02,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:02,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:36:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:02,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 18:36:02,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:02,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 18:36:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:02,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 18:36:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:02,859 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 18:36:02,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:36:02,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778799875] [2022-12-13 18:36:02,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778799875] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:36:02,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:36:02,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 18:36:02,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53228592] [2022-12-13 18:36:02,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:36:02,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:36:02,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:36:02,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:36:02,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:36:02,861 INFO L87 Difference]: Start difference. First operand 8984 states and 15144 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 18:36:19,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:36:19,932 INFO L93 Difference]: Finished difference Result 22011 states and 39430 transitions. [2022-12-13 18:36:19,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-13 18:36:19,933 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 135 [2022-12-13 18:36:19,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:36:19,994 INFO L225 Difference]: With dead ends: 22011 [2022-12-13 18:36:19,994 INFO L226 Difference]: Without dead ends: 13113 [2022-12-13 18:36:20,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-12-13 18:36:20,024 INFO L413 NwaCegarLoop]: 590 mSDtfsCounter, 2616 mSDsluCounter, 3077 mSDsCounter, 0 mSdLazyCounter, 6264 mSolverCounterSat, 849 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2674 SdHoareTripleChecker+Valid, 3667 SdHoareTripleChecker+Invalid, 7113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 849 IncrementalHoareTripleChecker+Valid, 6264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:36:20,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2674 Valid, 3667 Invalid, 7113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [849 Valid, 6264 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-12-13 18:36:20,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13113 states. [2022-12-13 18:36:24,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13113 to 9578. [2022-12-13 18:36:24,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9578 states, 7217 states have (on average 1.532769848967715) internal successors, (11062), 7669 states have internal predecessors, (11062), 1923 states have call successors, (1923), 310 states have call predecessors, (1923), 437 states have return successors, (2897), 1889 states have call predecessors, (2897), 1918 states have call successors, (2897) [2022-12-13 18:36:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9578 states to 9578 states and 15882 transitions. [2022-12-13 18:36:24,086 INFO L78 Accepts]: Start accepts. Automaton has 9578 states and 15882 transitions. Word has length 135 [2022-12-13 18:36:24,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:36:24,087 INFO L495 AbstractCegarLoop]: Abstraction has 9578 states and 15882 transitions. [2022-12-13 18:36:24,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 18:36:24,087 INFO L276 IsEmpty]: Start isEmpty. Operand 9578 states and 15882 transitions. [2022-12-13 18:36:24,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-12-13 18:36:24,089 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:36:24,089 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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 18:36:24,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 18:36:24,090 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:36:24,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:36:24,090 INFO L85 PathProgramCache]: Analyzing trace with hash -157490780, now seen corresponding path program 1 times [2022-12-13 18:36:24,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:36:24,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206038631] [2022-12-13 18:36:24,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:36:24,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:36:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:36:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:36:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:36:24,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:36:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:36:24,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:36:24,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:36:24,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:36:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:36:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 18:36:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:36:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 18:36:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 18:36:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 18:36:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,429 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 18:36:24,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:36:24,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206038631] [2022-12-13 18:36:24,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206038631] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:36:24,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352885445] [2022-12-13 18:36:24,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:36:24,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:36:24,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:36:24,430 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:36:24,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:36:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:24,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 1501 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 18:36:24,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:36:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 18:36:24,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:36:24,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352885445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:36:24,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:36:24,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-12-13 18:36:24,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901886962] [2022-12-13 18:36:24,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:36:24,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:36:24,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:36:24,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:36:24,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-12-13 18:36:24,674 INFO L87 Difference]: Start difference. First operand 9578 states and 15882 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 3 states have call successors, (15), 3 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 18:36:33,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:36:33,054 INFO L93 Difference]: Finished difference Result 26176 states and 44011 transitions. [2022-12-13 18:36:33,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:36:33,055 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 3 states have call successors, (15), 3 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 140 [2022-12-13 18:36:33,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:36:33,114 INFO L225 Difference]: With dead ends: 26176 [2022-12-13 18:36:33,114 INFO L226 Difference]: Without dead ends: 16638 [2022-12-13 18:36:33,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:36:33,146 INFO L413 NwaCegarLoop]: 1484 mSDtfsCounter, 921 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 973 SdHoareTripleChecker+Valid, 3230 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:36:33,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [973 Valid, 3230 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 18:36:33,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16638 states. [2022-12-13 18:36:39,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16638 to 15841. [2022-12-13 18:36:39,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15841 states, 11738 states have (on average 1.5500085193388993) internal successors, (18194), 12554 states have internal predecessors, (18194), 3421 states have call successors, (3421), 520 states have call predecessors, (3421), 681 states have return successors, (4723), 3391 states have call predecessors, (4723), 3416 states have call successors, (4723) [2022-12-13 18:36:40,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15841 states to 15841 states and 26338 transitions. [2022-12-13 18:36:40,072 INFO L78 Accepts]: Start accepts. Automaton has 15841 states and 26338 transitions. Word has length 140 [2022-12-13 18:36:40,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:36:40,072 INFO L495 AbstractCegarLoop]: Abstraction has 15841 states and 26338 transitions. [2022-12-13 18:36:40,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 3 states have call successors, (15), 3 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 18:36:40,073 INFO L276 IsEmpty]: Start isEmpty. Operand 15841 states and 26338 transitions. [2022-12-13 18:36:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-12-13 18:36:40,077 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:36:40,077 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 18:36:40,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:36:40,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b9f4cb6-ab9b-4af5-8425-dd648d6244a0/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 18:36:40,278 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:36:40,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:36:40,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2063228042, now seen corresponding path program 1 times [2022-12-13 18:36:40,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:36:40,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350099869] [2022-12-13 18:36:40,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:36:40,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:36:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:36:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:36:40,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:36:40,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:36:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:36:40,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:36:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:36:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:36:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 18:36:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 18:36:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 18:36:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:36:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:36:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:36:40,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 18:36:40,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:40,667 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 18:36:40,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:36:40,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350099869] [2022-12-13 18:36:40,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350099869] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:36:40,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:36:40,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:36:40,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23203563] [2022-12-13 18:36:40,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:36:40,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:36:40,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:36:40,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:36:40,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:36:40,669 INFO L87 Difference]: Start difference. First operand 15841 states and 26338 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 18:37:23,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:37:23,670 INFO L93 Difference]: Finished difference Result 68981 states and 132354 transitions. [2022-12-13 18:37:23,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 18:37:23,671 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 141 [2022-12-13 18:37:23,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:37:24,106 INFO L225 Difference]: With dead ends: 68981 [2022-12-13 18:37:24,106 INFO L226 Difference]: Without dead ends: 53226 [2022-12-13 18:37:24,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:37:24,227 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 3064 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 3575 mSolverCounterSat, 1281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3131 SdHoareTripleChecker+Valid, 2333 SdHoareTripleChecker+Invalid, 4856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1281 IncrementalHoareTripleChecker+Valid, 3575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:37:24,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3131 Valid, 2333 Invalid, 4856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1281 Valid, 3575 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-12-13 18:37:24,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53226 states. [2022-12-13 18:37:41,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53226 to 34321. [2022-12-13 18:37:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34321 states, 25082 states have (on average 1.543935890279882) internal successors, (38725), 26919 states have internal predecessors, (38725), 7774 states have call successors, (7774), 1035 states have call predecessors, (7774), 1464 states have return successors, (12484), 7756 states have call predecessors, (12484), 7769 states have call successors, (12484) [2022-12-13 18:37:41,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34321 states to 34321 states and 58983 transitions. [2022-12-13 18:37:41,482 INFO L78 Accepts]: Start accepts. Automaton has 34321 states and 58983 transitions. Word has length 141 [2022-12-13 18:37:41,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:37:41,482 INFO L495 AbstractCegarLoop]: Abstraction has 34321 states and 58983 transitions. [2022-12-13 18:37:41,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 18:37:41,483 INFO L276 IsEmpty]: Start isEmpty. Operand 34321 states and 58983 transitions. [2022-12-13 18:37:41,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-13 18:37:41,491 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:37:41,491 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 18:37:41,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 18:37:41,492 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:37:41,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:37:41,492 INFO L85 PathProgramCache]: Analyzing trace with hash 464023542, now seen corresponding path program 1 times [2022-12-13 18:37:41,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:37:41,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991005624] [2022-12-13 18:37:41,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:37:41,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:37:41,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:37:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:37:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:37:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:37:41,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:37:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:37:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:37:41,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:37:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 18:37:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 18:37:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 18:37:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:37:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:37:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:37:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 18:37:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 18:37:41,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:37:41,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991005624] [2022-12-13 18:37:41,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991005624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:37:41,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:37:41,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:37:41,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167074555] [2022-12-13 18:37:41,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:37:41,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:37:41,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:37:41,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:37:41,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:37:41,903 INFO L87 Difference]: Start difference. First operand 34321 states and 58983 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 18:39:11,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:39:11,321 INFO L93 Difference]: Finished difference Result 153555 states and 329019 transitions. [2022-12-13 18:39:11,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 18:39:11,323 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 142 [2022-12-13 18:39:11,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:39:12,705 INFO L225 Difference]: With dead ends: 153555 [2022-12-13 18:39:12,705 INFO L226 Difference]: Without dead ends: 119312 [2022-12-13 18:39:13,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:39:13,060 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 4801 mSDsluCounter, 1405 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 1753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4872 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 4660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1753 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:39:13,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4872 Valid, 2060 Invalid, 4660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1753 Valid, 2907 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-12-13 18:39:13,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119312 states. [2022-12-13 18:39:56,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119312 to 77112. [2022-12-13 18:39:56,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77112 states, 55265 states have (on average 1.5343707590699358) internal successors, (84797), 59631 states have internal predecessors, (84797), 18653 states have call successors, (18653), 2057 states have call predecessors, (18653), 3193 states have return successors, (36061), 18735 states have call predecessors, (36061), 18648 states have call successors, (36061) [2022-12-13 18:39:57,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77112 states to 77112 states and 139511 transitions. [2022-12-13 18:39:57,009 INFO L78 Accepts]: Start accepts. Automaton has 77112 states and 139511 transitions. Word has length 142 [2022-12-13 18:39:57,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:39:57,010 INFO L495 AbstractCegarLoop]: Abstraction has 77112 states and 139511 transitions. [2022-12-13 18:39:57,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 5 states have internal predecessors, (102), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 18:39:57,010 INFO L276 IsEmpty]: Start isEmpty. Operand 77112 states and 139511 transitions. [2022-12-13 18:39:57,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 18:39:57,021 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:39:57,021 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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 18:39:57,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 18:39:57,021 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:39:57,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:39:57,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1499415224, now seen corresponding path program 1 times [2022-12-13 18:39:57,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:39:57,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6634319] [2022-12-13 18:39:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:39:57,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:39:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-12-13 18:39:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:39:57,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 18:39:57,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 18:39:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:39:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 18:39:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 18:39:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:39:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 18:39:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 18:39:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 18:39:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-12-13 18:39:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:39:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:39:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 18:39:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,357 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 18:39:57,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:39:57,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6634319] [2022-12-13 18:39:57,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6634319] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:39:57,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:39:57,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:39:57,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234120398] [2022-12-13 18:39:57,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:39:57,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:39:57,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:39:57,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:39:57,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:39:57,359 INFO L87 Difference]: Start difference. First operand 77112 states and 139511 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-12-13 18:43:55,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:43:55,808 INFO L93 Difference]: Finished difference Result 367942 states and 896324 transitions. [2022-12-13 18:43:55,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-13 18:43:55,809 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 143 [2022-12-13 18:43:55,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:44:01,284 INFO L225 Difference]: With dead ends: 367942 [2022-12-13 18:44:01,285 INFO L226 Difference]: Without dead ends: 290916 [2022-12-13 18:44:02,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:44:02,525 INFO L413 NwaCegarLoop]: 655 mSDtfsCounter, 5531 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 2845 mSolverCounterSat, 2002 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5602 SdHoareTripleChecker+Valid, 2033 SdHoareTripleChecker+Invalid, 4847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2002 IncrementalHoareTripleChecker+Valid, 2845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:44:02,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5602 Valid, 2033 Invalid, 4847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2002 Valid, 2845 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-12-13 18:44:02,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290916 states.