./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a --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 c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c --- 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-b5237d8 [2022-11-21 17:10:10,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:10:10,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:10:10,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:10:10,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:10:10,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:10:10,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:10:10,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:10:10,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:10:10,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:10:11,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:10:11,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:10:11,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:10:11,007 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:10:11,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:10:11,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:10:11,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:10:11,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:10:11,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:10:11,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:10:11,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:10:11,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:10:11,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:10:11,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:10:11,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:10:11,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:10:11,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:10:11,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:10:11,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:10:11,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:10:11,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:10:11,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:10:11,052 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:10:11,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:10:11,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:10:11,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:10:11,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:10:11,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:10:11,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:10:11,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:10:11,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:10:11,062 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:10:11,104 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:10:11,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:10:11,105 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:10:11,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:10:11,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:10:11,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:10:11,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:10:11,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:10:11,109 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:10:11,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:10:11,110 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:10:11,111 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:10:11,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:10:11,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:10:11,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:10:11,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:10:11,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:10:11,113 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:10:11,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:10:11,113 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:10:11,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:10:11,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:10:11,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:10:11,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:10:11,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:10:11,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:10:11,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:10:11,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:10:11,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:10:11,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:10:11,117 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:10:11,117 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:10:11,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:10:11,118 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c169527384ebd2beb44494ef6b1cbc32334198d2b76d2236e6ced79c84ed026c [2022-11-21 17:10:11,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:10:11,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:10:11,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:10:11,531 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:10:11,532 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:10:11,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2022-11-21 17:10:14,670 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:10:15,053 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:10:15,053 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c [2022-11-21 17:10:15,085 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/data/b809a0fa5/4b23af36bd8041cabd8a6914667b040a/FLAG4db013fd8 [2022-11-21 17:10:15,104 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/data/b809a0fa5/4b23af36bd8041cabd8a6914667b040a [2022-11-21 17:10:15,107 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:10:15,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:10:15,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:10:15,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:10:15,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:10:15,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:10:15" (1/1) ... [2022-11-21 17:10:15,117 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a51105f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:15, skipping insertion in model container [2022-11-21 17:10:15,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:10:15" (1/1) ... [2022-11-21 17:10:15,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:10:15,204 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:10:15,438 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_c0a3cad8-c757-472d-a68e-5083cce06306/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2022-11-21 17:10:15,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:10:15,831 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:10:15,861 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_c0a3cad8-c757-472d-a68e-5083cce06306/sv-benchmarks/c/product-lines/elevator_spec3_product17.cil.c[5770,5783] [2022-11-21 17:10:15,963 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:10:16,007 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:10:16,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:16 WrapperNode [2022-11-21 17:10:16,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:10:16,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:10:16,010 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:10:16,010 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:10:16,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:16" (1/1) ... [2022-11-21 17:10:16,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:16" (1/1) ... [2022-11-21 17:10:16,103 INFO L138 Inliner]: procedures = 88, calls = 338, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 798 [2022-11-21 17:10:16,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:10:16,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:10:16,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:10:16,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:10:16,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:16" (1/1) ... [2022-11-21 17:10:16,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:16" (1/1) ... [2022-11-21 17:10:16,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:16" (1/1) ... [2022-11-21 17:10:16,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:16" (1/1) ... [2022-11-21 17:10:16,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:16" (1/1) ... [2022-11-21 17:10:16,175 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:16" (1/1) ... [2022-11-21 17:10:16,185 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:16" (1/1) ... [2022-11-21 17:10:16,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:16" (1/1) ... [2022-11-21 17:10:16,197 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:10:16,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:10:16,198 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:10:16,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:10:16,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:16" (1/1) ... [2022-11-21 17:10:16,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:10:16,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:10:16,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:10:16,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:10:16,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:10:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-21 17:10:16,319 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-21 17:10:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-21 17:10:16,319 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-21 17:10:16,319 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-21 17:10:16,320 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-21 17:10:16,321 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-21 17:10:16,322 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-21 17:10:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-21 17:10:16,322 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-21 17:10:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-21 17:10:16,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-21 17:10:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-21 17:10:16,323 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-21 17:10:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-21 17:10:16,323 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-21 17:10:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-21 17:10:16,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-21 17:10:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-21 17:10:16,324 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-21 17:10:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-21 17:10:16,324 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-21 17:10:16,324 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-21 17:10:16,324 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-21 17:10:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-11-21 17:10:16,325 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-11-21 17:10:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-21 17:10:16,325 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-21 17:10:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-11-21 17:10:16,326 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-11-21 17:10:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-21 17:10:16,327 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-21 17:10:16,327 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-21 17:10:16,328 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-21 17:10:16,328 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-21 17:10:16,328 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-21 17:10:16,328 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-21 17:10:16,328 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-21 17:10:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:10:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-21 17:10:16,329 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-21 17:10:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-21 17:10:16,329 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-21 17:10:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-21 17:10:16,330 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-21 17:10:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-21 17:10:16,330 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-21 17:10:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:10:16,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:10:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-21 17:10:16,331 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-21 17:10:16,556 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:10:16,573 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:10:17,853 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:10:17,870 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:10:17,875 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 17:10:17,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:10:17 BoogieIcfgContainer [2022-11-21 17:10:17,880 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:10:17,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:10:17,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:10:17,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:10:17,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:10:15" (1/3) ... [2022-11-21 17:10:17,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6188a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:10:17, skipping insertion in model container [2022-11-21 17:10:17,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:10:16" (2/3) ... [2022-11-21 17:10:17,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6188a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:10:17, skipping insertion in model container [2022-11-21 17:10:17,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:10:17" (3/3) ... [2022-11-21 17:10:17,893 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product17.cil.c [2022-11-21 17:10:17,914 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:10:17,915 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:10:17,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:10:18,003 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;@598bd8f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:10:18,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:10:18,011 INFO L276 IsEmpty]: Start isEmpty. Operand has 561 states, 435 states have (on average 1.6873563218390804) internal successors, (734), 453 states have internal predecessors, (734), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-11-21 17:10:18,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-21 17:10:18,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:18,038 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:18,038 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:10:18,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:18,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2072698757, now seen corresponding path program 1 times [2022-11-21 17:10:18,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:18,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785615710] [2022-11-21 17:10:18,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:18,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:18,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:10:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:19,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:10:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:19,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:10:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:10:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:19,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:10:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 17:10:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:19,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 17:10:19,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:19,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 17:10:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:19,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 17:10:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:19,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 17:10:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:19,441 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:10:19,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:19,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785615710] [2022-11-21 17:10:19,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785615710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:19,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:19,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:10:19,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614258785] [2022-11-21 17:10:19,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:19,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:10:19,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:19,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:10:19,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:10:19,502 INFO L87 Difference]: Start difference. First operand has 561 states, 435 states have (on average 1.6873563218390804) internal successors, (734), 453 states have internal predecessors, (734), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:10:30,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:30,396 INFO L93 Difference]: Finished difference Result 1473 states and 2556 transitions. [2022-11-21 17:10:30,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:10:30,398 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2022-11-21 17:10:30,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:10:30,424 INFO L225 Difference]: With dead ends: 1473 [2022-11-21 17:10:30,424 INFO L226 Difference]: Without dead ends: 912 [2022-11-21 17:10:30,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:10:30,439 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1151 mSDsluCounter, 2874 mSDsCounter, 0 mSdLazyCounter, 5910 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 6244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 5910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:10:30,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 3386 Invalid, 6244 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [334 Valid, 5910 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-11-21 17:10:30,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-11-21 17:10:30,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 564. [2022-11-21 17:10:30,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 438 states have (on average 1.678082191780822) internal successors, (735), 456 states have internal predecessors, (735), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2022-11-21 17:10:30,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 936 transitions. [2022-11-21 17:10:30,806 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 936 transitions. Word has length 85 [2022-11-21 17:10:30,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:10:30,807 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 936 transitions. [2022-11-21 17:10:30,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:10:30,808 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 936 transitions. [2022-11-21 17:10:30,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-21 17:10:30,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:30,814 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:30,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:10:30,815 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:10:30,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:30,816 INFO L85 PathProgramCache]: Analyzing trace with hash 778951319, now seen corresponding path program 1 times [2022-11-21 17:10:30,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:30,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345435172] [2022-11-21 17:10:30,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:30,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:31,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:10:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:31,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:10:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:31,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:10:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:31,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:10:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:31,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:10:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:31,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:10:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:31,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:10:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:31,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 17:10:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:31,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:10:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:31,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 17:10:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:10:31,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:31,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345435172] [2022-11-21 17:10:31,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345435172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:31,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:31,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:10:31,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57130414] [2022-11-21 17:10:31,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:31,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:10:31,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:31,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:10:31,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:10:31,655 INFO L87 Difference]: Start difference. First operand 564 states and 936 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:10:41,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:41,976 INFO L93 Difference]: Finished difference Result 1463 states and 2502 transitions. [2022-11-21 17:10:41,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 17:10:41,978 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2022-11-21 17:10:41,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:10:41,986 INFO L225 Difference]: With dead ends: 1463 [2022-11-21 17:10:41,986 INFO L226 Difference]: Without dead ends: 915 [2022-11-21 17:10:41,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-21 17:10:41,992 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1115 mSDsluCounter, 2635 mSDsCounter, 0 mSdLazyCounter, 5982 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1220 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 6315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 5982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:10:41,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1220 Valid, 3109 Invalid, 6315 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [333 Valid, 5982 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-11-21 17:10:41,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 915 states. [2022-11-21 17:10:42,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 564. [2022-11-21 17:10:42,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 438 states have (on average 1.6757990867579908) internal successors, (734), 456 states have internal predecessors, (734), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2022-11-21 17:10:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 935 transitions. [2022-11-21 17:10:42,169 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 935 transitions. Word has length 86 [2022-11-21 17:10:42,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:10:42,170 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 935 transitions. [2022-11-21 17:10:42,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:10:42,171 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 935 transitions. [2022-11-21 17:10:42,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-21 17:10:42,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:42,177 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:42,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:10:42,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:10:42,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:42,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1606559886, now seen corresponding path program 1 times [2022-11-21 17:10:42,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:42,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704884762] [2022-11-21 17:10:42,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:42,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:42,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:10:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:42,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:10:42,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:42,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:10:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:42,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:10:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:42,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 17:10:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:42,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:10:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:42,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:10:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:42,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 17:10:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:42,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 17:10:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:42,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 17:10:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:10:42,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:42,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704884762] [2022-11-21 17:10:42,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704884762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:42,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:42,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:10:42,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637723632] [2022-11-21 17:10:42,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:42,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:10:42,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:42,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:10:42,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:10:42,702 INFO L87 Difference]: Start difference. First operand 564 states and 935 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 17:10:50,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:10:50,156 INFO L93 Difference]: Finished difference Result 1454 states and 2482 transitions. [2022-11-21 17:10:50,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:10:50,156 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2022-11-21 17:10:50,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:10:50,163 INFO L225 Difference]: With dead ends: 1454 [2022-11-21 17:10:50,163 INFO L226 Difference]: Without dead ends: 875 [2022-11-21 17:10:50,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:10:50,168 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 1584 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 3038 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1689 SdHoareTripleChecker+Valid, 1679 SdHoareTripleChecker+Invalid, 3580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3038 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:10:50,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1689 Valid, 1679 Invalid, 3580 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [542 Valid, 3038 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-21 17:10:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-11-21 17:10:50,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 540. [2022-11-21 17:10:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 417 states have (on average 1.6666666666666667) internal successors, (695), 433 states have internal predecessors, (695), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-21 17:10:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 892 transitions. [2022-11-21 17:10:50,295 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 892 transitions. Word has length 86 [2022-11-21 17:10:50,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:10:50,296 INFO L495 AbstractCegarLoop]: Abstraction has 540 states and 892 transitions. [2022-11-21 17:10:50,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-21 17:10:50,297 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 892 transitions. [2022-11-21 17:10:50,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-21 17:10:50,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:10:50,299 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:10:50,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:10:50,300 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:10:50,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:10:50,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1472924655, now seen corresponding path program 1 times [2022-11-21 17:10:50,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:10:50,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766542096] [2022-11-21 17:10:50,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:10:50,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:10:50,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:50,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:10:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:50,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:10:50,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:50,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:10:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:50,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:10:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:50,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:10:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:50,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 17:10:50,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:50,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-21 17:10:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:50,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:10:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:50,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 17:10:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:50,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 17:10:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:10:50,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:10:50,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:10:50,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766542096] [2022-11-21 17:10:50,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766542096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:10:50,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:10:50,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:10:50,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235461726] [2022-11-21 17:10:50,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:10:50,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:10:50,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:10:50,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:10:50,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:10:50,870 INFO L87 Difference]: Start difference. First operand 540 states and 892 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:11:00,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:00,358 INFO L93 Difference]: Finished difference Result 1417 states and 2413 transitions. [2022-11-21 17:11:00,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:11:00,363 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2022-11-21 17:11:00,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:00,370 INFO L225 Difference]: With dead ends: 1417 [2022-11-21 17:11:00,370 INFO L226 Difference]: Without dead ends: 869 [2022-11-21 17:11:00,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:11:00,388 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1101 mSDsluCounter, 2696 mSDsCounter, 0 mSdLazyCounter, 5708 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 6037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 5708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:00,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 3181 Invalid, 6037 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [329 Valid, 5708 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-21 17:11:00,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-11-21 17:11:00,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 534. [2022-11-21 17:11:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 411 states have (on average 1.659367396593674) internal successors, (682), 427 states have internal predecessors, (682), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-21 17:11:00,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 879 transitions. [2022-11-21 17:11:00,570 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 879 transitions. Word has length 87 [2022-11-21 17:11:00,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:00,570 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 879 transitions. [2022-11-21 17:11:00,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:11:00,571 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 879 transitions. [2022-11-21 17:11:00,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-21 17:11:00,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:00,573 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:00,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:11:00,573 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:00,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:00,574 INFO L85 PathProgramCache]: Analyzing trace with hash 114166783, now seen corresponding path program 1 times [2022-11-21 17:11:00,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:00,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337021033] [2022-11-21 17:11:00,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:00,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:00,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:11:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:00,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:00,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:11:00,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:01,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:01,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:11:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:01,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 17:11:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:01,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 17:11:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:01,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 17:11:01,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:01,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 17:11:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:01,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 17:11:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:01,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:11:01,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:01,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337021033] [2022-11-21 17:11:01,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337021033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:01,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:01,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:11:01,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811105920] [2022-11-21 17:11:01,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:01,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:11:01,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:01,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:11:01,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:11:01,155 INFO L87 Difference]: Start difference. First operand 534 states and 879 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:11:10,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:10,750 INFO L93 Difference]: Finished difference Result 1387 states and 2362 transitions. [2022-11-21 17:11:10,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:11:10,751 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2022-11-21 17:11:10,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:10,758 INFO L225 Difference]: With dead ends: 1387 [2022-11-21 17:11:10,758 INFO L226 Difference]: Without dead ends: 869 [2022-11-21 17:11:10,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:11:10,763 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1042 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 5577 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 5904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 5577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:10,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 3159 Invalid, 5904 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [327 Valid, 5577 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-21 17:11:10,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-11-21 17:11:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 534. [2022-11-21 17:11:10,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 411 states have (on average 1.6569343065693432) internal successors, (681), 427 states have internal predecessors, (681), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-21 17:11:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 878 transitions. [2022-11-21 17:11:10,930 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 878 transitions. Word has length 88 [2022-11-21 17:11:10,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:10,931 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 878 transitions. [2022-11-21 17:11:10,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:11:10,931 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 878 transitions. [2022-11-21 17:11:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-21 17:11:10,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:10,933 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:10,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:11:10,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:10,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:10,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1749082962, now seen corresponding path program 1 times [2022-11-21 17:11:10,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:10,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458300009] [2022-11-21 17:11:10,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:10,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:11:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:11:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:11:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 17:11:11,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-21 17:11:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-21 17:11:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 17:11:11,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 17:11:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:11,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:11:11,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:11,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458300009] [2022-11-21 17:11:11,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458300009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:11,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:11,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:11:11,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202181077] [2022-11-21 17:11:11,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:11,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:11:11,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:11,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:11:11,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:11:11,504 INFO L87 Difference]: Start difference. First operand 534 states and 878 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:11:20,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:20,911 INFO L93 Difference]: Finished difference Result 1405 states and 2382 transitions. [2022-11-21 17:11:20,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:11:20,912 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2022-11-21 17:11:20,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:20,918 INFO L225 Difference]: With dead ends: 1405 [2022-11-21 17:11:20,918 INFO L226 Difference]: Without dead ends: 863 [2022-11-21 17:11:20,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:11:20,923 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 1063 mSDsluCounter, 2726 mSDsCounter, 0 mSdLazyCounter, 5641 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 3216 SdHoareTripleChecker+Invalid, 5968 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 5641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:20,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1167 Valid, 3216 Invalid, 5968 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [327 Valid, 5641 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-21 17:11:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-11-21 17:11:21,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 528. [2022-11-21 17:11:21,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 405 states have (on average 1.6493827160493828) internal successors, (668), 421 states have internal predecessors, (668), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-21 17:11:21,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 865 transitions. [2022-11-21 17:11:21,074 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 865 transitions. Word has length 89 [2022-11-21 17:11:21,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:21,075 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 865 transitions. [2022-11-21 17:11:21,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:11:21,075 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 865 transitions. [2022-11-21 17:11:21,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-21 17:11:21,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:21,078 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:21,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:11:21,078 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:21,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:21,079 INFO L85 PathProgramCache]: Analyzing trace with hash -318995648, now seen corresponding path program 1 times [2022-11-21 17:11:21,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:21,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773136577] [2022-11-21 17:11:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:21,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:11:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:21,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:11:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:11:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 17:11:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 17:11:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 17:11:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 17:11:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 17:11:21,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:21,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:11:21,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:21,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773136577] [2022-11-21 17:11:21,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773136577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:21,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:21,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:11:21,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705061980] [2022-11-21 17:11:21,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:21,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:11:21,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:21,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:11:21,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:11:21,673 INFO L87 Difference]: Start difference. First operand 528 states and 865 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:11:30,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:30,457 INFO L93 Difference]: Finished difference Result 1375 states and 2333 transitions. [2022-11-21 17:11:30,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:11:30,457 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2022-11-21 17:11:30,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:30,463 INFO L225 Difference]: With dead ends: 1375 [2022-11-21 17:11:30,463 INFO L226 Difference]: Without dead ends: 863 [2022-11-21 17:11:30,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:11:30,467 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 2014 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 5230 mSolverCounterSat, 747 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 5977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 747 IncrementalHoareTripleChecker+Valid, 5230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:30,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2119 Valid, 3045 Invalid, 5977 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [747 Valid, 5230 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-21 17:11:30,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-11-21 17:11:30,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 528. [2022-11-21 17:11:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 405 states have (on average 1.6469135802469135) internal successors, (667), 421 states have internal predecessors, (667), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-21 17:11:30,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 864 transitions. [2022-11-21 17:11:30,643 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 864 transitions. Word has length 90 [2022-11-21 17:11:30,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:30,643 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 864 transitions. [2022-11-21 17:11:30,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:11:30,644 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 864 transitions. [2022-11-21 17:11:30,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-21 17:11:30,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:30,646 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:30,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:11:30,647 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:30,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:30,647 INFO L85 PathProgramCache]: Analyzing trace with hash 860076690, now seen corresponding path program 1 times [2022-11-21 17:11:30,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:30,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366495610] [2022-11-21 17:11:30,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:30,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:30,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:30,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:11:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:31,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:31,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:11:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:31,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:31,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:11:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:31,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 17:11:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:31,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 17:11:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:31,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 17:11:31,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:31,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 17:11:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:31,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 17:11:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:31,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:11:31,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:31,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366495610] [2022-11-21 17:11:31,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366495610] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:31,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:31,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:11:31,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039360927] [2022-11-21 17:11:31,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:31,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:11:31,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:31,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:11:31,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:11:31,271 INFO L87 Difference]: Start difference. First operand 528 states and 864 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:11:40,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:40,444 INFO L93 Difference]: Finished difference Result 1393 states and 2351 transitions. [2022-11-21 17:11:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:11:40,445 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2022-11-21 17:11:40,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:40,451 INFO L225 Difference]: With dead ends: 1393 [2022-11-21 17:11:40,452 INFO L226 Difference]: Without dead ends: 857 [2022-11-21 17:11:40,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:11:40,474 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 1548 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 5427 mSolverCounterSat, 534 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 3047 SdHoareTripleChecker+Invalid, 5961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 5427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:40,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 3047 Invalid, 5961 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [534 Valid, 5427 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-21 17:11:40,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-21 17:11:40,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 522. [2022-11-21 17:11:40,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 399 states have (on average 1.6390977443609023) internal successors, (654), 415 states have internal predecessors, (654), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-21 17:11:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 851 transitions. [2022-11-21 17:11:40,665 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 851 transitions. Word has length 91 [2022-11-21 17:11:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:40,666 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 851 transitions. [2022-11-21 17:11:40,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:11:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 851 transitions. [2022-11-21 17:11:40,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-21 17:11:40,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:40,669 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:40,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:11:40,669 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:40,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:40,670 INFO L85 PathProgramCache]: Analyzing trace with hash -790852111, now seen corresponding path program 1 times [2022-11-21 17:11:40,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:40,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563071178] [2022-11-21 17:11:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:40,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:40,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:11:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:41,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:11:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:41,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:41,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:41,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:11:41,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:41,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 17:11:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:41,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 17:11:41,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:41,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 17:11:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:41,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 17:11:41,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:41,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 17:11:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:41,196 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:11:41,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:41,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563071178] [2022-11-21 17:11:41,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563071178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:41,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:41,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:11:41,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362947201] [2022-11-21 17:11:41,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:41,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:11:41,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:41,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:11:41,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:11:41,200 INFO L87 Difference]: Start difference. First operand 522 states and 851 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:11:50,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:50,485 INFO L93 Difference]: Finished difference Result 1363 states and 2304 transitions. [2022-11-21 17:11:50,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:11:50,486 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2022-11-21 17:11:50,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:50,491 INFO L225 Difference]: With dead ends: 1363 [2022-11-21 17:11:50,492 INFO L226 Difference]: Without dead ends: 857 [2022-11-21 17:11:50,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:11:50,495 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 988 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 5367 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 3165 SdHoareTripleChecker+Invalid, 5696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 5367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:50,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 3165 Invalid, 5696 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [329 Valid, 5367 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-21 17:11:50,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-21 17:11:50,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 522. [2022-11-21 17:11:50,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 399 states have (on average 1.636591478696742) internal successors, (653), 415 states have internal predecessors, (653), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-21 17:11:50,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 850 transitions. [2022-11-21 17:11:50,690 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 850 transitions. Word has length 91 [2022-11-21 17:11:50,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:11:50,691 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 850 transitions. [2022-11-21 17:11:50,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:11:50,691 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 850 transitions. [2022-11-21 17:11:50,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-21 17:11:50,694 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:11:50,694 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:11:50,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:11:50,694 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:11:50,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:11:50,695 INFO L85 PathProgramCache]: Analyzing trace with hash -2025245946, now seen corresponding path program 1 times [2022-11-21 17:11:50,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:11:50,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469073945] [2022-11-21 17:11:50,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:11:50,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:11:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:51,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:11:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:51,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:11:51,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:51,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:11:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:51,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:11:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:51,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:11:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:51,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 17:11:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:51,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 17:11:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:51,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:11:51,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:51,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 17:11:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:11:51,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:11:51,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:11:51,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469073945] [2022-11-21 17:11:51,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469073945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:11:51,258 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:11:51,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:11:51,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192733421] [2022-11-21 17:11:51,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:11:51,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:11:51,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:11:51,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:11:51,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:11:51,260 INFO L87 Difference]: Start difference. First operand 522 states and 850 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:11:59,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:11:59,874 INFO L93 Difference]: Finished difference Result 1375 states and 2314 transitions. [2022-11-21 17:11:59,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:11:59,875 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-11-21 17:11:59,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:11:59,879 INFO L225 Difference]: With dead ends: 1375 [2022-11-21 17:11:59,880 INFO L226 Difference]: Without dead ends: 869 [2022-11-21 17:11:59,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-11-21 17:11:59,883 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1986 mSDsluCounter, 2521 mSDsCounter, 0 mSdLazyCounter, 5145 mSolverCounterSat, 753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2091 SdHoareTripleChecker+Valid, 2988 SdHoareTripleChecker+Invalid, 5898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 753 IncrementalHoareTripleChecker+Valid, 5145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:11:59,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2091 Valid, 2988 Invalid, 5898 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [753 Valid, 5145 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-21 17:11:59,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2022-11-21 17:12:00,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 528. [2022-11-21 17:12:00,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 405 states have (on average 1.6271604938271604) internal successors, (659), 421 states have internal predecessors, (659), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-21 17:12:00,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 856 transitions. [2022-11-21 17:12:00,117 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 856 transitions. Word has length 92 [2022-11-21 17:12:00,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:00,117 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 856 transitions. [2022-11-21 17:12:00,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:12:00,118 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 856 transitions. [2022-11-21 17:12:00,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-21 17:12:00,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:00,120 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:00,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 17:12:00,121 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:00,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:00,121 INFO L85 PathProgramCache]: Analyzing trace with hash -764328696, now seen corresponding path program 1 times [2022-11-21 17:12:00,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:00,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425663301] [2022-11-21 17:12:00,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:00,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:12:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:00,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:00,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:12:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:00,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:00,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:12:00,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:00,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 17:12:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:00,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 17:12:00,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:00,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 17:12:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:00,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 17:12:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:00,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 17:12:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:00,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:12:00,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:00,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425663301] [2022-11-21 17:12:00,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425663301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:00,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:00,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:12:00,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748414246] [2022-11-21 17:12:00,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:00,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:12:00,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:00,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:12:00,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:12:00,672 INFO L87 Difference]: Start difference. First operand 528 states and 856 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:12:09,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:09,059 INFO L93 Difference]: Finished difference Result 1378 states and 2315 transitions. [2022-11-21 17:12:09,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 17:12:09,059 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-11-21 17:12:09,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:09,064 INFO L225 Difference]: With dead ends: 1378 [2022-11-21 17:12:09,064 INFO L226 Difference]: Without dead ends: 857 [2022-11-21 17:12:09,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-11-21 17:12:09,068 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1507 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 5214 mSolverCounterSat, 538 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 3035 SdHoareTripleChecker+Invalid, 5752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 538 IncrementalHoareTripleChecker+Valid, 5214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:09,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 3035 Invalid, 5752 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [538 Valid, 5214 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-21 17:12:09,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-21 17:12:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 522. [2022-11-21 17:12:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 399 states have (on average 1.6340852130325814) internal successors, (652), 415 states have internal predecessors, (652), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-11-21 17:12:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 849 transitions. [2022-11-21 17:12:09,302 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 849 transitions. Word has length 92 [2022-11-21 17:12:09,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:09,303 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 849 transitions. [2022-11-21 17:12:09,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:12:09,303 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 849 transitions. [2022-11-21 17:12:09,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-21 17:12:09,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:09,305 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:09,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:12:09,306 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:09,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:09,306 INFO L85 PathProgramCache]: Analyzing trace with hash 641297367, now seen corresponding path program 1 times [2022-11-21 17:12:09,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:09,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80289418] [2022-11-21 17:12:09,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:09,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:09,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:12:09,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:09,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:09,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:12:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:09,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:09,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:09,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:12:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:09,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 17:12:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:09,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 17:12:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:09,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 17:12:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:09,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 17:12:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:09,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 17:12:09,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:12:09,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:09,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80289418] [2022-11-21 17:12:09,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80289418] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:12:09,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2029664689] [2022-11-21 17:12:09,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:09,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:09,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:09,859 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:12:09,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:12:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:10,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:12:10,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:10,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:10,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:12:10,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2029664689] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:10,388 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:12:10,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-21 17:12:10,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881739265] [2022-11-21 17:12:10,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:10,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:12:10,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:10,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:12:10,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:12:10,390 INFO L87 Difference]: Start difference. First operand 522 states and 849 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:12:10,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:10,945 INFO L93 Difference]: Finished difference Result 1478 states and 2437 transitions. [2022-11-21 17:12:10,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:12:10,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2022-11-21 17:12:10,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:10,951 INFO L225 Difference]: With dead ends: 1478 [2022-11-21 17:12:10,951 INFO L226 Difference]: Without dead ends: 974 [2022-11-21 17:12:10,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:12:10,955 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 795 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:10,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [795 Valid, 1680 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:12:10,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2022-11-21 17:12:11,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 959. [2022-11-21 17:12:11,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 740 states have (on average 1.6486486486486487) internal successors, (1220), 771 states have internal predecessors, (1220), 176 states have call successors, (176), 43 states have call predecessors, (176), 42 states have return successors, (178), 170 states have call predecessors, (178), 173 states have call successors, (178) [2022-11-21 17:12:11,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1574 transitions. [2022-11-21 17:12:11,361 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1574 transitions. Word has length 93 [2022-11-21 17:12:11,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:11,362 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1574 transitions. [2022-11-21 17:12:11,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:12:11,362 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1574 transitions. [2022-11-21 17:12:11,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-21 17:12:11,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:11,366 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:11,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:12:11,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:11,574 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:11,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:11,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1699468356, now seen corresponding path program 1 times [2022-11-21 17:12:11,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:11,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966686016] [2022-11-21 17:12:11,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:11,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:11,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:12:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:12,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:12,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:12,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:12:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:12,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:12,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:12:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:12,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 17:12:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:12,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 17:12:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:12,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 17:12:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:12,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 17:12:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 17:12:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:12,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:12:12,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:12,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966686016] [2022-11-21 17:12:12,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966686016] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:12:12,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742190136] [2022-11-21 17:12:12,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:12,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:12,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:12,158 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:12:12,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:12:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:12,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:12:12,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:12,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:12:12,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742190136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:12,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:12:12,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-21 17:12:12,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015948193] [2022-11-21 17:12:12,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:12,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:12:12,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:12,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:12:12,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:12:12,586 INFO L87 Difference]: Start difference. First operand 959 states and 1574 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:12:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:13,170 INFO L93 Difference]: Finished difference Result 2352 states and 3889 transitions. [2022-11-21 17:12:13,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:12:13,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2022-11-21 17:12:13,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:13,179 INFO L225 Difference]: With dead ends: 2352 [2022-11-21 17:12:13,179 INFO L226 Difference]: Without dead ends: 1411 [2022-11-21 17:12:13,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:12:13,185 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 794 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1732 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:13,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1732 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:12:13,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2022-11-21 17:12:13,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1363. [2022-11-21 17:12:13,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1054 states have (on average 1.6622390891840608) internal successors, (1752), 1100 states have internal predecessors, (1752), 249 states have call successors, (249), 59 states have call predecessors, (249), 59 states have return successors, (256), 242 states have call predecessors, (256), 246 states have call successors, (256) [2022-11-21 17:12:13,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 2257 transitions. [2022-11-21 17:12:13,800 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 2257 transitions. Word has length 94 [2022-11-21 17:12:13,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:13,800 INFO L495 AbstractCegarLoop]: Abstraction has 1363 states and 2257 transitions. [2022-11-21 17:12:13,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-21 17:12:13,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 2257 transitions. [2022-11-21 17:12:13,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-21 17:12:13,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:13,806 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:13,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-21 17:12:14,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 17:12:14,014 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:14,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:14,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2081985821, now seen corresponding path program 1 times [2022-11-21 17:12:14,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:14,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954002501] [2022-11-21 17:12:14,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:14,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:12:14,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:12:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:12:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 17:12:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 17:12:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 17:12:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 17:12:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 17:12:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-21 17:12:14,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:12:14,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:14,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954002501] [2022-11-21 17:12:14,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954002501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:14,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:12:14,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:12:14,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192968433] [2022-11-21 17:12:14,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:14,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:12:14,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:14,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:12:14,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:12:14,548 INFO L87 Difference]: Start difference. First operand 1363 states and 2257 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-21 17:12:42,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:42,990 INFO L93 Difference]: Finished difference Result 6773 states and 12415 transitions. [2022-11-21 17:12:42,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 17:12:42,991 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 96 [2022-11-21 17:12:42,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:43,036 INFO L225 Difference]: With dead ends: 6773 [2022-11-21 17:12:43,036 INFO L226 Difference]: Without dead ends: 5428 [2022-11-21 17:12:43,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-21 17:12:43,048 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 2835 mSDsluCounter, 2957 mSDsCounter, 0 mSdLazyCounter, 8896 mSolverCounterSat, 1936 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2946 SdHoareTripleChecker+Valid, 3694 SdHoareTripleChecker+Invalid, 10832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1936 IncrementalHoareTripleChecker+Valid, 8896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:43,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2946 Valid, 3694 Invalid, 10832 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1936 Valid, 8896 Invalid, 0 Unknown, 0 Unchecked, 22.0s Time] [2022-11-21 17:12:43,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5428 states. [2022-11-21 17:12:44,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5428 to 3275. [2022-11-21 17:12:44,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 2379 states have (on average 1.6279949558638083) internal successors, (3873), 2563 states have internal predecessors, (3873), 745 states have call successors, (745), 112 states have call predecessors, (745), 150 states have return successors, (1172), 743 states have call predecessors, (1172), 741 states have call successors, (1172) [2022-11-21 17:12:44,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 5790 transitions. [2022-11-21 17:12:44,885 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 5790 transitions. Word has length 96 [2022-11-21 17:12:44,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:44,885 INFO L495 AbstractCegarLoop]: Abstraction has 3275 states and 5790 transitions. [2022-11-21 17:12:44,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-21 17:12:44,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 5790 transitions. [2022-11-21 17:12:44,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 17:12:44,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:44,892 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:44,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:12:44,893 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:44,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:44,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1845134538, now seen corresponding path program 1 times [2022-11-21 17:12:44,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:44,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252514313] [2022-11-21 17:12:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:44,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:45,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:12:45,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:45,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:45,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:12:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:45,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:45,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:45,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:12:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:45,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 17:12:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:45,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 17:12:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:45,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 17:12:45,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:45,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 17:12:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:45,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 17:12:45,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:45,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-21 17:12:45,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:45,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:12:45,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:45,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252514313] [2022-11-21 17:12:45,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252514313] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:12:45,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540476304] [2022-11-21 17:12:45,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:45,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:45,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:45,467 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:12:45,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:12:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:45,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:12:45,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:45,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:45,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:12:45,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540476304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:45,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:12:45,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-21 17:12:45,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584818333] [2022-11-21 17:12:45,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:45,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:12:45,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:45,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:12:45,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:12:45,870 INFO L87 Difference]: Start difference. First operand 3275 states and 5790 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:12:49,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:12:49,092 INFO L93 Difference]: Finished difference Result 9757 states and 17450 transitions. [2022-11-21 17:12:49,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:12:49,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2022-11-21 17:12:49,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:12:49,137 INFO L225 Difference]: With dead ends: 9757 [2022-11-21 17:12:49,138 INFO L226 Difference]: Without dead ends: 6501 [2022-11-21 17:12:49,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:12:49,162 INFO L413 NwaCegarLoop]: 1644 mSDtfsCounter, 837 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 2479 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:12:49,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 2479 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:12:49,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6501 states. [2022-11-21 17:12:53,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6501 to 6434. [2022-11-21 17:12:53,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6434 states, 4682 states have (on average 1.6315677061085005) internal successors, (7639), 5042 states have internal predecessors, (7639), 1456 states have call successors, (1456), 212 states have call predecessors, (1456), 295 states have return successors, (2383), 1467 states have call predecessors, (2383), 1450 states have call successors, (2383) [2022-11-21 17:12:53,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6434 states to 6434 states and 11478 transitions. [2022-11-21 17:12:53,412 INFO L78 Accepts]: Start accepts. Automaton has 6434 states and 11478 transitions. Word has length 97 [2022-11-21 17:12:53,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:12:53,412 INFO L495 AbstractCegarLoop]: Abstraction has 6434 states and 11478 transitions. [2022-11-21 17:12:53,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-21 17:12:53,413 INFO L276 IsEmpty]: Start isEmpty. Operand 6434 states and 11478 transitions. [2022-11-21 17:12:53,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-21 17:12:53,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:12:53,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:12:53,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:12:53,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-21 17:12:53,628 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:12:53,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:12:53,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1438715508, now seen corresponding path program 1 times [2022-11-21 17:12:53,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:12:53,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635584543] [2022-11-21 17:12:53,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:53,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:12:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:53,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:12:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:54,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:54,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:12:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:54,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:12:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:54,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:12:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:54,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 17:12:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:54,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 17:12:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:54,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 17:12:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:54,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 17:12:54,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:54,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-21 17:12:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:54,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-21 17:12:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:54,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:12:54,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:12:54,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635584543] [2022-11-21 17:12:54,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635584543] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:12:54,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773379172] [2022-11-21 17:12:54,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:12:54,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:12:54,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:12:54,133 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:12:54,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:12:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:12:54,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 1577 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:12:54,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:12:54,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:12:54,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:12:54,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773379172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:12:54,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:12:54,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-21 17:12:54,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256885385] [2022-11-21 17:12:54,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:12:54,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:12:54,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:12:54,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:12:54,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:12:54,653 INFO L87 Difference]: Start difference. First operand 6434 states and 11478 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-21 17:13:01,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:13:01,480 INFO L93 Difference]: Finished difference Result 18746 states and 33843 transitions. [2022-11-21 17:13:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:13:01,480 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-11-21 17:13:01,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:13:01,548 INFO L225 Difference]: With dead ends: 18746 [2022-11-21 17:13:01,549 INFO L226 Difference]: Without dead ends: 12331 [2022-11-21 17:13:01,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:13:01,584 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 704 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1690 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:13:01,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1690 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:13:01,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12331 states. [2022-11-21 17:13:08,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12331 to 12294. [2022-11-21 17:13:08,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12294 states, 8898 states have (on average 1.600472016183412) internal successors, (14241), 9610 states have internal predecessors, (14241), 2816 states have call successors, (2816), 418 states have call predecessors, (2816), 579 states have return successors, (4748), 2835 states have call predecessors, (4748), 2806 states have call successors, (4748) [2022-11-21 17:13:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12294 states to 12294 states and 21805 transitions. [2022-11-21 17:13:08,792 INFO L78 Accepts]: Start accepts. Automaton has 12294 states and 21805 transitions. Word has length 97 [2022-11-21 17:13:08,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:13:08,792 INFO L495 AbstractCegarLoop]: Abstraction has 12294 states and 21805 transitions. [2022-11-21 17:13:08,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-21 17:13:08,793 INFO L276 IsEmpty]: Start isEmpty. Operand 12294 states and 21805 transitions. [2022-11-21 17:13:08,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-21 17:13:08,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:13:08,798 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:13:08,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-21 17:13:09,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-21 17:13:09,005 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:13:09,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:13:09,006 INFO L85 PathProgramCache]: Analyzing trace with hash -2018713813, now seen corresponding path program 1 times [2022-11-21 17:13:09,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:13:09,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805769082] [2022-11-21 17:13:09,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:09,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:13:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:13:09,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:09,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:13:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:13:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 17:13:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 17:13:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 17:13:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 17:13:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:13:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 17:13:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 17:13:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:13:09,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:13:09,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805769082] [2022-11-21 17:13:09,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805769082] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:13:09,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887511392] [2022-11-21 17:13:09,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:09,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:13:09,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:13:09,618 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:13:09,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 17:13:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:09,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 17:13:09,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:13:10,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:13:10,077 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:13:10,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887511392] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:13:10,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:13:10,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-21 17:13:10,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770349361] [2022-11-21 17:13:10,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:13:10,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:13:10,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:13:10,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:13:10,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:13:10,080 INFO L87 Difference]: Start difference. First operand 12294 states and 21805 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-21 17:13:18,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:13:18,590 INFO L93 Difference]: Finished difference Result 24943 states and 44779 transitions. [2022-11-21 17:13:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:13:18,590 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 102 [2022-11-21 17:13:18,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:13:18,677 INFO L225 Difference]: With dead ends: 24943 [2022-11-21 17:13:18,678 INFO L226 Difference]: Without dead ends: 12667 [2022-11-21 17:13:18,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:13:18,751 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 1011 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 3751 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:13:18,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 3751 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-21 17:13:18,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12667 states. [2022-11-21 17:13:24,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12667 to 10905. [2022-11-21 17:13:24,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10905 states, 7933 states have (on average 1.587671750913904) internal successors, (12595), 8536 states have internal predecessors, (12595), 2450 states have call successors, (2450), 378 states have call predecessors, (2450), 521 states have return successors, (4074), 2466 states have call predecessors, (4074), 2440 states have call successors, (4074) [2022-11-21 17:13:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10905 states to 10905 states and 19119 transitions. [2022-11-21 17:13:24,931 INFO L78 Accepts]: Start accepts. Automaton has 10905 states and 19119 transitions. Word has length 102 [2022-11-21 17:13:24,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:13:24,931 INFO L495 AbstractCegarLoop]: Abstraction has 10905 states and 19119 transitions. [2022-11-21 17:13:24,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-21 17:13:24,932 INFO L276 IsEmpty]: Start isEmpty. Operand 10905 states and 19119 transitions. [2022-11-21 17:13:24,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-21 17:13:24,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:13:24,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:13:24,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:13:25,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c0a3cad8-c757-472d-a68e-5083cce06306/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-21 17:13:25,144 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:13:25,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:13:25,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1829486226, now seen corresponding path program 1 times [2022-11-21 17:13:25,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:13:25,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604160996] [2022-11-21 17:13:25,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:25,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:13:25,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:25,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:13:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:25,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:13:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:25,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:25,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:13:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:25,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 17:13:25,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:25,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 17:13:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:25,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 17:13:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:25,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 17:13:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:25,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:13:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:25,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 17:13:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:25,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 17:13:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:25,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:13:25,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:13:25,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604160996] [2022-11-21 17:13:25,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604160996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:13:25,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:13:25,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:13:25,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852675100] [2022-11-21 17:13:25,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:13:25,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:13:25,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:13:25,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:13:25,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:13:25,611 INFO L87 Difference]: Start difference. First operand 10905 states and 19119 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-21 17:13:40,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:13:40,653 INFO L93 Difference]: Finished difference Result 24934 states and 45036 transitions. [2022-11-21 17:13:40,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:13:40,653 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-11-21 17:13:40,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:13:40,748 INFO L225 Difference]: With dead ends: 24934 [2022-11-21 17:13:40,749 INFO L226 Difference]: Without dead ends: 14047 [2022-11-21 17:13:40,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:13:40,839 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 1453 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 2824 mSolverCounterSat, 509 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 509 IncrementalHoareTripleChecker+Valid, 2824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:13:40,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1558 Valid, 1764 Invalid, 3333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [509 Valid, 2824 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-21 17:13:40,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14047 states. [2022-11-21 17:13:46,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14047 to 11047. [2022-11-21 17:13:46,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11047 states, 8045 states have (on average 1.5814791796146674) internal successors, (12723), 8648 states have internal predecessors, (12723), 2460 states have call successors, (2460), 386 states have call predecessors, (2460), 541 states have return successors, (4129), 2472 states have call predecessors, (4129), 2450 states have call successors, (4129) [2022-11-21 17:13:46,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11047 states to 11047 states and 19312 transitions. [2022-11-21 17:13:46,953 INFO L78 Accepts]: Start accepts. Automaton has 11047 states and 19312 transitions. Word has length 102 [2022-11-21 17:13:46,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:13:46,953 INFO L495 AbstractCegarLoop]: Abstraction has 11047 states and 19312 transitions. [2022-11-21 17:13:46,953 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-21 17:13:46,954 INFO L276 IsEmpty]: Start isEmpty. Operand 11047 states and 19312 transitions. [2022-11-21 17:13:46,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-21 17:13:46,958 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:13:46,958 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] [2022-11-21 17:13:46,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 17:13:46,958 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:13:46,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:13:46,959 INFO L85 PathProgramCache]: Analyzing trace with hash -136354573, now seen corresponding path program 1 times [2022-11-21 17:13:46,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:13:46,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813760557] [2022-11-21 17:13:46,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:13:46,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:13:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:47,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:13:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:47,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:47,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:47,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:13:47,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:47,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:13:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:47,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:13:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:47,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 17:13:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:47,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 17:13:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 17:13:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:47,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 17:13:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:47,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-21 17:13:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:47,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:13:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:47,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 17:13:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:47,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-21 17:13:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:13:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 17:13:47,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:13:47,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813760557] [2022-11-21 17:13:47,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813760557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:13:47,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:13:47,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:13:47,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022776883] [2022-11-21 17:13:47,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:13:47,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:13:47,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:13:47,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:13:47,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:13:47,460 INFO L87 Difference]: Start difference. First operand 11047 states and 19312 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-21 17:14:35,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:14:35,992 INFO L93 Difference]: Finished difference Result 48124 states and 93811 transitions. [2022-11-21 17:14:35,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 17:14:35,993 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2022-11-21 17:14:35,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:14:36,346 INFO L225 Difference]: With dead ends: 48124 [2022-11-21 17:14:36,346 INFO L226 Difference]: Without dead ends: 37095 [2022-11-21 17:14:36,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-21 17:14:36,772 INFO L413 NwaCegarLoop]: 794 mSDtfsCounter, 4793 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 8316 mSolverCounterSat, 2813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4904 SdHoareTripleChecker+Valid, 3734 SdHoareTripleChecker+Invalid, 11129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2813 IncrementalHoareTripleChecker+Valid, 8316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:14:36,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4904 Valid, 3734 Invalid, 11129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2813 Valid, 8316 Invalid, 0 Unknown, 0 Unchecked, 19.4s Time] [2022-11-21 17:14:36,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37095 states. [2022-11-21 17:14:49,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37095 to 21957. [2022-11-21 17:14:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21957 states, 15996 states have (on average 1.5782695673918479) internal successors, (25246), 17193 states have internal predecessors, (25246), 4875 states have call successors, (4875), 766 states have call predecessors, (4875), 1085 states have return successors, (9015), 4917 states have call predecessors, (9015), 4857 states have call successors, (9015) [2022-11-21 17:14:49,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21957 states to 21957 states and 39136 transitions. [2022-11-21 17:14:49,306 INFO L78 Accepts]: Start accepts. Automaton has 21957 states and 39136 transitions. Word has length 110 [2022-11-21 17:14:49,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:14:49,306 INFO L495 AbstractCegarLoop]: Abstraction has 21957 states and 39136 transitions. [2022-11-21 17:14:49,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-21 17:14:49,307 INFO L276 IsEmpty]: Start isEmpty. Operand 21957 states and 39136 transitions. [2022-11-21 17:14:49,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-21 17:14:49,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:14:49,312 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] [2022-11-21 17:14:49,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 17:14:49,312 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:14:49,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:14:49,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1262361593, now seen corresponding path program 1 times [2022-11-21 17:14:49,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:14:49,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392863992] [2022-11-21 17:14:49,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:14:49,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:14:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:49,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:14:49,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:49,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:14:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:49,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 17:14:49,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:49,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:14:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:49,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 17:14:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:49,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 17:14:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:49,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-21 17:14:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:49,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 17:14:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:49,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 17:14:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:49,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 17:14:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:49,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 17:14:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:49,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 17:14:49,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:49,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-21 17:14:49,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:14:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 17:14:49,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:14:49,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392863992] [2022-11-21 17:14:49,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392863992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:14:49,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:14:49,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:14:49,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541524323] [2022-11-21 17:14:49,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:14:49,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:14:49,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:14:49,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:14:49,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:14:49,849 INFO L87 Difference]: Start difference. First operand 21957 states and 39136 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-21 17:15:14,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:15:14,215 INFO L93 Difference]: Finished difference Result 49672 states and 93319 transitions. [2022-11-21 17:15:14,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 17:15:14,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2022-11-21 17:15:14,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:15:14,431 INFO L225 Difference]: With dead ends: 49672 [2022-11-21 17:15:14,431 INFO L226 Difference]: Without dead ends: 27733 [2022-11-21 17:15:14,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:15:14,629 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 1476 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 2823 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 3333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 2823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:15:14,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 1716 Invalid, 3333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 2823 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-21 17:15:14,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27733 states.