./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc --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 e1240a0d3e559b8971965b03cecb352351a22be921567ab044722f9bb2872bc1 --- 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-5e519f3 [2022-11-02 21:08:52,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 21:08:52,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 21:08:52,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 21:08:52,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 21:08:52,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 21:08:52,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 21:08:52,280 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 21:08:52,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 21:08:52,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 21:08:52,290 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 21:08:52,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 21:08:52,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 21:08:52,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 21:08:52,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 21:08:52,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 21:08:52,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 21:08:52,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 21:08:52,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 21:08:52,313 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 21:08:52,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 21:08:52,319 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 21:08:52,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 21:08:52,324 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 21:08:52,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 21:08:52,333 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 21:08:52,333 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 21:08:52,336 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 21:08:52,336 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 21:08:52,339 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 21:08:52,340 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 21:08:52,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 21:08:52,344 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 21:08:52,345 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 21:08:52,346 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 21:08:52,347 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 21:08:52,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 21:08:52,348 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 21:08:52,348 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 21:08:52,349 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 21:08:52,350 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 21:08:52,351 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 21:08:52,397 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 21:08:52,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 21:08:52,398 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 21:08:52,398 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 21:08:52,399 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 21:08:52,399 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 21:08:52,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 21:08:52,400 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 21:08:52,400 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 21:08:52,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 21:08:52,402 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 21:08:52,402 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 21:08:52,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 21:08:52,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 21:08:52,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 21:08:52,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 21:08:52,403 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 21:08:52,403 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 21:08:52,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 21:08:52,404 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 21:08:52,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 21:08:52,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 21:08:52,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 21:08:52,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 21:08:52,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:08:52,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 21:08:52,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 21:08:52,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 21:08:52,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 21:08:52,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 21:08:52,407 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 21:08:52,407 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 21:08:52,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 21:08:52,408 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_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1240a0d3e559b8971965b03cecb352351a22be921567ab044722f9bb2872bc1 [2022-11-02 21:08:52,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 21:08:52,746 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 21:08:52,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 21:08:52,750 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 21:08:52,751 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 21:08:52,753 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c [2022-11-02 21:08:52,833 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/data/0ccbdd12c/9c95a46cbed94a739a05ae23f31f7149/FLAGfa78d4c93 [2022-11-02 21:08:53,526 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 21:08:53,529 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c [2022-11-02 21:08:53,562 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/data/0ccbdd12c/9c95a46cbed94a739a05ae23f31f7149/FLAGfa78d4c93 [2022-11-02 21:08:53,729 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/data/0ccbdd12c/9c95a46cbed94a739a05ae23f31f7149 [2022-11-02 21:08:53,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 21:08:53,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 21:08:53,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 21:08:53,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 21:08:53,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 21:08:53,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:08:53" (1/1) ... [2022-11-02 21:08:53,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c0753f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:53, skipping insertion in model container [2022-11-02 21:08:53,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 09:08:53" (1/1) ... [2022-11-02 21:08:53,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 21:08:53,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 21:08:54,333 WARN L230 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_fb4e8381-e0c9-4baf-8d57-41710ea766f8/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c[38445,38458] [2022-11-02 21:08:54,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:08:54,487 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 21:08:54,598 WARN L230 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_fb4e8381-e0c9-4baf-8d57-41710ea766f8/sv-benchmarks/c/product-lines/elevator_spec2_product20.cil.c[38445,38458] [2022-11-02 21:08:54,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 21:08:54,713 INFO L208 MainTranslator]: Completed translation [2022-11-02 21:08:54,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:54 WrapperNode [2022-11-02 21:08:54,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 21:08:54,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 21:08:54,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 21:08:54,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 21:08:54,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:54" (1/1) ... [2022-11-02 21:08:54,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:54" (1/1) ... [2022-11-02 21:08:54,824 INFO L138 Inliner]: procedures = 96, calls = 346, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 1134 [2022-11-02 21:08:54,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 21:08:54,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 21:08:54,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 21:08:54,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 21:08:54,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:54" (1/1) ... [2022-11-02 21:08:54,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:54" (1/1) ... [2022-11-02 21:08:54,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:54" (1/1) ... [2022-11-02 21:08:54,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:54" (1/1) ... [2022-11-02 21:08:54,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:54" (1/1) ... [2022-11-02 21:08:54,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:54" (1/1) ... [2022-11-02 21:08:54,926 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:54" (1/1) ... [2022-11-02 21:08:54,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:54" (1/1) ... [2022-11-02 21:08:54,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 21:08:54,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 21:08:54,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 21:08:54,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 21:08:54,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:54" (1/1) ... [2022-11-02 21:08:54,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 21:08:54,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:08:54,988 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 21:08:55,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 21:08:55,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 21:08:55,042 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-02 21:08:55,042 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-02 21:08:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-02 21:08:55,043 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-02 21:08:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-11-02 21:08:55,043 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-11-02 21:08:55,044 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-02 21:08:55,044 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-02 21:08:55,045 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-02 21:08:55,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-02 21:08:55,046 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-02 21:08:55,046 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-02 21:08:55,046 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-02 21:08:55,046 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-02 21:08:55,046 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-02 21:08:55,047 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-02 21:08:55,047 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-02 21:08:55,047 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-02 21:08:55,047 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-02 21:08:55,047 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-02 21:08:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-02 21:08:55,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-02 21:08:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-02 21:08:55,048 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-02 21:08:55,048 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-02 21:08:55,049 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-02 21:08:55,049 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-02 21:08:55,049 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-02 21:08:55,049 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-02 21:08:55,049 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-02 21:08:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-02 21:08:55,050 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-02 21:08:55,050 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-02 21:08:55,051 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-02 21:08:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-02 21:08:55,051 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-02 21:08:55,051 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-02 21:08:55,051 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-02 21:08:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-02 21:08:55,052 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-02 21:08:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 21:08:55,052 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-02 21:08:55,052 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-02 21:08:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-02 21:08:55,053 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-02 21:08:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-02 21:08:55,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-02 21:08:55,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 21:08:55,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 21:08:55,054 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-02 21:08:55,055 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-02 21:08:55,055 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-11-02 21:08:55,055 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-11-02 21:08:55,272 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 21:08:55,275 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 21:08:56,782 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:08:56,803 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:08:56,803 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:08:56,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:56 BoogieIcfgContainer [2022-11-02 21:08:56,806 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:08:56,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:08:56,810 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:08:56,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:08:56,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 09:08:53" (1/3) ... [2022-11-02 21:08:56,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e3c984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:56, skipping insertion in model container [2022-11-02 21:08:56,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 09:08:54" (2/3) ... [2022-11-02 21:08:56,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28e3c984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:08:56, skipping insertion in model container [2022-11-02 21:08:56,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:08:56" (3/3) ... [2022-11-02 21:08:56,818 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product20.cil.c [2022-11-02 21:08:56,837 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:08:56,838 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:08:56,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:08:56,941 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;@789616b0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:08:56,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:08:56,948 INFO L276 IsEmpty]: Start isEmpty. Operand has 569 states, 443 states have (on average 1.6862302483069977) internal successors, (747), 466 states have internal predecessors, (747), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) [2022-11-02 21:08:56,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-02 21:08:56,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:08:56,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:08:56,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:08:56,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:08:56,969 INFO L85 PathProgramCache]: Analyzing trace with hash 69269955, now seen corresponding path program 1 times [2022-11-02 21:08:56,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:08:56,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991593731] [2022-11-02 21:08:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:08:56,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:08:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:57,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:08:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:57,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:08:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:57,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:08:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 21:08:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:08:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:08:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:08:58,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:08:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:08:58,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:08:58,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991593731] [2022-11-02 21:08:58,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991593731] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:08:58,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:08:58,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:08:58,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983375833] [2022-11-02 21:08:58,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:08:58,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:08:58,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:08:58,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:08:58,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:08:58,134 INFO L87 Difference]: Start difference. First operand has 569 states, 443 states have (on average 1.6862302483069977) internal successors, (747), 466 states have internal predecessors, (747), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:04,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:04,648 INFO L93 Difference]: Finished difference Result 1281 states and 2159 transitions. [2022-11-02 21:09:04,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:09:04,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-11-02 21:09:04,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:04,678 INFO L225 Difference]: With dead ends: 1281 [2022-11-02 21:09:04,678 INFO L226 Difference]: Without dead ends: 724 [2022-11-02 21:09:04,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:04,691 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1128 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1213 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:04,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1213 Valid, 1700 Invalid, 2444 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [305 Valid, 2139 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-02 21:09:04,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-11-02 21:09:04,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-11-02 21:09:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6819221967963387) internal successors, (735), 458 states have internal predecessors, (735), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-02 21:09:04,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 928 transitions. [2022-11-02 21:09:04,992 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 928 transitions. Word has length 60 [2022-11-02 21:09:04,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:04,992 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 928 transitions. [2022-11-02 21:09:04,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:04,994 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 928 transitions. [2022-11-02 21:09:05,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-02 21:09:05,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:05,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:05,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:09:05,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:05,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:05,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1582622137, now seen corresponding path program 1 times [2022-11-02 21:09:05,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:05,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822068060] [2022-11-02 21:09:05,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:05,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:05,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:09:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:05,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:05,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:09:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:05,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 21:09:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:05,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:05,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:05,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:09:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:05,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:05,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822068060] [2022-11-02 21:09:05,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822068060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:05,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:05,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:09:05,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858108667] [2022-11-02 21:09:05,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:05,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:09:05,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:05,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:09:05,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:09:05,597 INFO L87 Difference]: Start difference. First operand 561 states and 928 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:11,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:11,536 INFO L93 Difference]: Finished difference Result 1267 states and 2125 transitions. [2022-11-02 21:09:11,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:09:11,537 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-11-02 21:09:11,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:11,553 INFO L225 Difference]: With dead ends: 1267 [2022-11-02 21:09:11,554 INFO L226 Difference]: Without dead ends: 724 [2022-11-02 21:09:11,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:11,564 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 1124 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 2140 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 2444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 2140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:11,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 1669 Invalid, 2444 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [304 Valid, 2140 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-02 21:09:11,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-11-02 21:09:11,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-11-02 21:09:11,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6796338672768878) internal successors, (734), 458 states have internal predecessors, (734), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-02 21:09:11,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 927 transitions. [2022-11-02 21:09:11,715 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 927 transitions. Word has length 63 [2022-11-02 21:09:11,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:11,715 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 927 transitions. [2022-11-02 21:09:11,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:11,716 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 927 transitions. [2022-11-02 21:09:11,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-02 21:09:11,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:11,717 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:11,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:09:11,717 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:11,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:11,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1632470035, now seen corresponding path program 1 times [2022-11-02 21:09:11,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:11,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815365154] [2022-11-02 21:09:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:11,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:11,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:09:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:11,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:09:12,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 21:09:12,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:12,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:12,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:09:12,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:12,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:12,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815365154] [2022-11-02 21:09:12,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815365154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:12,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:12,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:09:12,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566464278] [2022-11-02 21:09:12,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:12,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:09:12,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:12,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:09:12,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:09:12,263 INFO L87 Difference]: Start difference. First operand 561 states and 927 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:17,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:17,850 INFO L93 Difference]: Finished difference Result 1267 states and 2124 transitions. [2022-11-02 21:09:17,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:09:17,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-11-02 21:09:17,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:17,857 INFO L225 Difference]: With dead ends: 1267 [2022-11-02 21:09:17,857 INFO L226 Difference]: Without dead ends: 724 [2022-11-02 21:09:17,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:17,861 INFO L413 NwaCegarLoop]: 863 mSDtfsCounter, 1113 mSDsluCounter, 845 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 295 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 2430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 295 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:17,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 1708 Invalid, 2430 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [295 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-11-02 21:09:17,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-11-02 21:09:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-11-02 21:09:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.677345537757437) internal successors, (733), 458 states have internal predecessors, (733), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-02 21:09:17,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 926 transitions. [2022-11-02 21:09:17,965 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 926 transitions. Word has length 64 [2022-11-02 21:09:17,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:17,966 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 926 transitions. [2022-11-02 21:09:17,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:17,966 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 926 transitions. [2022-11-02 21:09:17,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-02 21:09:17,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:17,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:17,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:09:17,968 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:17,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:17,969 INFO L85 PathProgramCache]: Analyzing trace with hash -2079372939, now seen corresponding path program 1 times [2022-11-02 21:09:17,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:17,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933820555] [2022-11-02 21:09:17,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:17,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:18,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:09:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:18,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-02 21:09:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:18,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-02 21:09:18,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:18,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:09:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:18,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:18,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933820555] [2022-11-02 21:09:18,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933820555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:18,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:18,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:09:18,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002748172] [2022-11-02 21:09:18,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:18,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:09:18,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:18,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:09:18,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:09:18,479 INFO L87 Difference]: Start difference. First operand 561 states and 926 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:24,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:24,633 INFO L93 Difference]: Finished difference Result 1267 states and 2123 transitions. [2022-11-02 21:09:24,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:09:24,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-02 21:09:24,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:24,640 INFO L225 Difference]: With dead ends: 1267 [2022-11-02 21:09:24,640 INFO L226 Difference]: Without dead ends: 724 [2022-11-02 21:09:24,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:24,645 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 668 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 2318 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:24,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1692 Invalid, 2464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2318 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-02 21:09:24,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-11-02 21:09:24,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-11-02 21:09:24,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6750572082379862) internal successors, (732), 458 states have internal predecessors, (732), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-02 21:09:24,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 925 transitions. [2022-11-02 21:09:24,769 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 925 transitions. Word has length 65 [2022-11-02 21:09:24,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:24,771 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 925 transitions. [2022-11-02 21:09:24,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:24,771 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 925 transitions. [2022-11-02 21:09:24,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-02 21:09:24,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:24,775 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:24,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:09:24,776 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:24,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:24,777 INFO L85 PathProgramCache]: Analyzing trace with hash -2144548657, now seen corresponding path program 1 times [2022-11-02 21:09:24,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:24,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276745969] [2022-11-02 21:09:24,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:24,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:25,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:09:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:25,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-02 21:09:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:25,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-02 21:09:25,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:25,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:25,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:25,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:25,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:09:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:25,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:25,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276745969] [2022-11-02 21:09:25,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276745969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:25,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:25,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:09:25,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057262760] [2022-11-02 21:09:25,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:25,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:09:25,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:25,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:09:25,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:09:25,334 INFO L87 Difference]: Start difference. First operand 561 states and 925 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:30,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:30,764 INFO L93 Difference]: Finished difference Result 1267 states and 2122 transitions. [2022-11-02 21:09:30,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:09:30,766 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-02 21:09:30,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:30,772 INFO L225 Difference]: With dead ends: 1267 [2022-11-02 21:09:30,773 INFO L226 Difference]: Without dead ends: 724 [2022-11-02 21:09:30,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:30,785 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 1112 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 2131 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1197 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 2436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:30,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1197 Valid, 1672 Invalid, 2436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2131 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-02 21:09:30,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-11-02 21:09:30,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-11-02 21:09:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6727688787185355) internal successors, (731), 458 states have internal predecessors, (731), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-02 21:09:30,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 924 transitions. [2022-11-02 21:09:30,948 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 924 transitions. Word has length 66 [2022-11-02 21:09:30,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:30,948 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 924 transitions. [2022-11-02 21:09:30,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:30,949 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 924 transitions. [2022-11-02 21:09:30,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-02 21:09:30,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:30,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:30,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:09:30,951 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:30,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:30,952 INFO L85 PathProgramCache]: Analyzing trace with hash -832189135, now seen corresponding path program 1 times [2022-11-02 21:09:30,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:30,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596569522] [2022-11-02 21:09:30,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:30,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:31,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:09:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:31,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:31,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:09:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:31,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-02 21:09:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:31,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:31,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:31,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:09:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:31,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:31,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:31,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596569522] [2022-11-02 21:09:31,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596569522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:31,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:31,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:09:31,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713900686] [2022-11-02 21:09:31,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:31,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:09:31,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:31,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:09:31,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:31,659 INFO L87 Difference]: Start difference. First operand 561 states and 924 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:38,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:38,324 INFO L93 Difference]: Finished difference Result 1227 states and 2046 transitions. [2022-11-02 21:09:38,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:09:38,325 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-11-02 21:09:38,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:38,332 INFO L225 Difference]: With dead ends: 1227 [2022-11-02 21:09:38,332 INFO L226 Difference]: Without dead ends: 724 [2022-11-02 21:09:38,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:09:38,337 INFO L413 NwaCegarLoop]: 804 mSDtfsCounter, 758 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 3831 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 2233 SdHoareTripleChecker+Invalid, 4016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 3831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:38,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 2233 Invalid, 4016 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [185 Valid, 3831 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-02 21:09:38,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-11-02 21:09:38,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-11-02 21:09:38,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6613272311212814) internal successors, (726), 458 states have internal predecessors, (726), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-02 21:09:38,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 919 transitions. [2022-11-02 21:09:38,477 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 919 transitions. Word has length 67 [2022-11-02 21:09:38,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:38,477 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 919 transitions. [2022-11-02 21:09:38,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:38,478 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 919 transitions. [2022-11-02 21:09:38,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-02 21:09:38,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:38,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:38,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:09:38,480 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:38,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:38,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1045699021, now seen corresponding path program 1 times [2022-11-02 21:09:38,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:38,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440352990] [2022-11-02 21:09:38,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:38,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:38,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:09:38,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:38,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:38,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:09:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:39,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-02 21:09:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:39,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:39,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:09:39,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:39,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:39,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440352990] [2022-11-02 21:09:39,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440352990] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:39,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:39,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:09:39,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902849164] [2022-11-02 21:09:39,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:39,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:09:39,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:39,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:09:39,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:39,273 INFO L87 Difference]: Start difference. First operand 561 states and 919 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:45,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:45,568 INFO L93 Difference]: Finished difference Result 1227 states and 2041 transitions. [2022-11-02 21:09:45,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:09:45,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-11-02 21:09:45,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:45,574 INFO L225 Difference]: With dead ends: 1227 [2022-11-02 21:09:45,574 INFO L226 Difference]: Without dead ends: 724 [2022-11-02 21:09:45,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:09:45,577 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 1199 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 3622 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 3957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 3622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:45,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 2200 Invalid, 3957 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [335 Valid, 3622 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-02 21:09:45,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-11-02 21:09:45,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-11-02 21:09:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6498855835240274) internal successors, (721), 458 states have internal predecessors, (721), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-02 21:09:45,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 914 transitions. [2022-11-02 21:09:45,694 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 914 transitions. Word has length 68 [2022-11-02 21:09:45,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:45,694 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 914 transitions. [2022-11-02 21:09:45,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:45,695 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 914 transitions. [2022-11-02 21:09:45,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-02 21:09:45,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:45,696 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:45,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:09:45,697 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:45,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:45,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1182173814, now seen corresponding path program 1 times [2022-11-02 21:09:45,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:45,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662443086] [2022-11-02 21:09:45,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:45,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:45,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:09:45,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:46,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:46,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:09:46,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:46,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-02 21:09:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:46,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:46,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:46,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:46,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:09:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:46,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:46,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:46,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662443086] [2022-11-02 21:09:46,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662443086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:46,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:46,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:09:46,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998223891] [2022-11-02 21:09:46,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:46,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:09:46,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:46,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:09:46,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:46,275 INFO L87 Difference]: Start difference. First operand 561 states and 914 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:53,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:09:53,476 INFO L93 Difference]: Finished difference Result 1227 states and 2036 transitions. [2022-11-02 21:09:53,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:09:53,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-11-02 21:09:53,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:09:53,483 INFO L225 Difference]: With dead ends: 1227 [2022-11-02 21:09:53,483 INFO L226 Difference]: Without dead ends: 724 [2022-11-02 21:09:53,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:09:53,486 INFO L413 NwaCegarLoop]: 803 mSDtfsCounter, 756 mSDsluCounter, 1423 mSDsCounter, 0 mSdLazyCounter, 3771 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 3946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 3771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:09:53,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 2226 Invalid, 3946 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [175 Valid, 3771 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-02 21:09:53,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-11-02 21:09:53,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-11-02 21:09:53,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6384439359267735) internal successors, (716), 458 states have internal predecessors, (716), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-02 21:09:53,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 909 transitions. [2022-11-02 21:09:53,605 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 909 transitions. Word has length 69 [2022-11-02 21:09:53,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:09:53,606 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 909 transitions. [2022-11-02 21:09:53,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:09:53,606 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 909 transitions. [2022-11-02 21:09:53,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 21:09:53,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:09:53,608 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:09:53,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:09:53,608 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:09:53,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:09:53,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1125558094, now seen corresponding path program 1 times [2022-11-02 21:09:53,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:09:53,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077836309] [2022-11-02 21:09:53,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:09:53,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:09:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:53,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:09:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:53,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:53,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:09:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:54,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 21:09:54,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:54,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:54,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:09:54,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:54,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:09:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:09:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:09:54,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:09:54,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077836309] [2022-11-02 21:09:54,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077836309] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:09:54,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:09:54,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:09:54,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847721339] [2022-11-02 21:09:54,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:09:54,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:09:54,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:09:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:09:54,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:09:54,110 INFO L87 Difference]: Start difference. First operand 561 states and 909 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:10:00,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:00,968 INFO L93 Difference]: Finished difference Result 1227 states and 2031 transitions. [2022-11-02 21:10:00,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:10:00,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-11-02 21:10:00,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:00,972 INFO L225 Difference]: With dead ends: 1227 [2022-11-02 21:10:00,972 INFO L226 Difference]: Without dead ends: 724 [2022-11-02 21:10:00,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:10:00,975 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 766 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 3741 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 3913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 3741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:00,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 2202 Invalid, 3913 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [172 Valid, 3741 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-02 21:10:00,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-11-02 21:10:01,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 561. [2022-11-02 21:10:01,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 437 states have (on average 1.6270022883295194) internal successors, (711), 458 states have internal predecessors, (711), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-02 21:10:01,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 904 transitions. [2022-11-02 21:10:01,100 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 904 transitions. Word has length 70 [2022-11-02 21:10:01,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:01,100 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 904 transitions. [2022-11-02 21:10:01,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:10:01,101 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 904 transitions. [2022-11-02 21:10:01,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-02 21:10:01,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:01,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:01,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:10:01,102 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:01,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:01,103 INFO L85 PathProgramCache]: Analyzing trace with hash -181173421, now seen corresponding path program 1 times [2022-11-02 21:10:01,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:01,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126008334] [2022-11-02 21:10:01,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:01,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:01,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:10:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:01,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:01,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:10:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:01,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 21:10:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:01,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:01,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:01,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:10:01,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:01,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:01,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:01,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126008334] [2022-11-02 21:10:01,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126008334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:01,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:01,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:10:01,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414220614] [2022-11-02 21:10:01,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:01,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:10:01,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:01,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:10:01,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:10:01,577 INFO L87 Difference]: Start difference. First operand 561 states and 904 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:10:07,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:07,921 INFO L93 Difference]: Finished difference Result 1242 states and 2046 transitions. [2022-11-02 21:10:07,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:10:07,924 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-11-02 21:10:07,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:07,930 INFO L225 Difference]: With dead ends: 1242 [2022-11-02 21:10:07,930 INFO L226 Difference]: Without dead ends: 745 [2022-11-02 21:10:07,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:07,933 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 736 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 2384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:07,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 1639 Invalid, 2384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-02 21:10:07,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-02 21:10:08,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 563. [2022-11-02 21:10:08,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 439 states have (on average 1.6241457858769932) internal successors, (713), 460 states have internal predecessors, (713), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-02 21:10:08,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 906 transitions. [2022-11-02 21:10:08,074 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 906 transitions. Word has length 70 [2022-11-02 21:10:08,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:08,074 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 906 transitions. [2022-11-02 21:10:08,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:10:08,075 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 906 transitions. [2022-11-02 21:10:08,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 21:10:08,076 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:08,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:08,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:10:08,077 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:08,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:08,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1894286405, now seen corresponding path program 1 times [2022-11-02 21:10:08,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:08,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568263514] [2022-11-02 21:10:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:08,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:08,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:08,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:10:08,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:08,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:08,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:10:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:08,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 21:10:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:08,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:08,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:08,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:10:08,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:08,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:08,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:08,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568263514] [2022-11-02 21:10:08,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568263514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:08,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:08,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:10:08,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303374577] [2022-11-02 21:10:08,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:08,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:10:08,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:08,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:10:08,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:08,661 INFO L87 Difference]: Start difference. First operand 563 states and 906 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:10:15,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:15,690 INFO L93 Difference]: Finished difference Result 1233 states and 2032 transitions. [2022-11-02 21:10:15,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 21:10:15,690 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-11-02 21:10:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:15,695 INFO L225 Difference]: With dead ends: 1233 [2022-11-02 21:10:15,695 INFO L226 Difference]: Without dead ends: 728 [2022-11-02 21:10:15,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:10:15,697 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 764 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 3711 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 2178 SdHoareTripleChecker+Invalid, 3880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 3711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:15,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 2178 Invalid, 3880 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [169 Valid, 3711 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-02 21:10:15,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-02 21:10:15,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 563. [2022-11-02 21:10:15,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 439 states have (on average 1.612756264236902) internal successors, (708), 460 states have internal predecessors, (708), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-02 21:10:15,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 901 transitions. [2022-11-02 21:10:15,820 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 901 transitions. Word has length 71 [2022-11-02 21:10:15,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:15,821 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 901 transitions. [2022-11-02 21:10:15,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:10:15,821 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 901 transitions. [2022-11-02 21:10:15,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-02 21:10:15,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:15,823 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:15,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:10:15,824 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:15,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:15,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1916022968, now seen corresponding path program 1 times [2022-11-02 21:10:15,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:15,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128564510] [2022-11-02 21:10:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:15,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:16,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:10:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:16,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:16,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:16,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:10:16,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:16,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 21:10:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:16,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:16,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:16,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:10:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:16,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:16,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:16,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128564510] [2022-11-02 21:10:16,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128564510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:16,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:16,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:10:16,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71269146] [2022-11-02 21:10:16,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:16,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:10:16,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:16,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:10:16,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:10:16,382 INFO L87 Difference]: Start difference. First operand 563 states and 901 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:10:22,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:22,570 INFO L93 Difference]: Finished difference Result 1246 states and 2043 transitions. [2022-11-02 21:10:22,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:10:22,571 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-11-02 21:10:22,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:22,576 INFO L225 Difference]: With dead ends: 1246 [2022-11-02 21:10:22,576 INFO L226 Difference]: Without dead ends: 749 [2022-11-02 21:10:22,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:22,578 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 1181 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:22,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 1643 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 2040 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-02 21:10:22,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-02 21:10:22,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 566. [2022-11-02 21:10:22,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 442 states have (on average 1.6085972850678734) internal successors, (711), 463 states have internal predecessors, (711), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-02 21:10:22,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 904 transitions. [2022-11-02 21:10:22,701 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 904 transitions. Word has length 71 [2022-11-02 21:10:22,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:22,701 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 904 transitions. [2022-11-02 21:10:22,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:10:22,702 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 904 transitions. [2022-11-02 21:10:22,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-02 21:10:22,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:22,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:22,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-02 21:10:22,704 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:22,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:22,704 INFO L85 PathProgramCache]: Analyzing trace with hash 2096423831, now seen corresponding path program 1 times [2022-11-02 21:10:22,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:22,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692645614] [2022-11-02 21:10:22,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:22,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:22,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:10:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:23,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:23,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:23,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:10:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:23,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:10:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:23,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:23,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:23,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:10:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:23,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:23,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692645614] [2022-11-02 21:10:23,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692645614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:23,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:23,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 21:10:23,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847767262] [2022-11-02 21:10:23,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:23,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 21:10:23,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:23,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 21:10:23,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 21:10:23,376 INFO L87 Difference]: Start difference. First operand 566 states and 904 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 21:10:32,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:32,172 INFO L93 Difference]: Finished difference Result 1250 states and 2049 transitions. [2022-11-02 21:10:32,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:10:32,174 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-11-02 21:10:32,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:32,181 INFO L225 Difference]: With dead ends: 1250 [2022-11-02 21:10:32,181 INFO L226 Difference]: Without dead ends: 756 [2022-11-02 21:10:32,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-11-02 21:10:32,185 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 774 mSDsluCounter, 2338 mSDsCounter, 0 mSdLazyCounter, 5990 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 6146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 5990 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:32,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 3172 Invalid, 6146 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [156 Valid, 5990 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-02 21:10:32,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-11-02 21:10:32,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 577. [2022-11-02 21:10:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 450 states have (on average 1.6044444444444443) internal successors, (722), 473 states have internal predecessors, (722), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-02 21:10:32,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 919 transitions. [2022-11-02 21:10:32,323 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 919 transitions. Word has length 72 [2022-11-02 21:10:32,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:32,324 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 919 transitions. [2022-11-02 21:10:32,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-02 21:10:32,324 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 919 transitions. [2022-11-02 21:10:32,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-02 21:10:32,326 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:32,326 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:32,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-02 21:10:32,327 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:32,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:32,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1416234744, now seen corresponding path program 1 times [2022-11-02 21:10:32,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:32,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603427153] [2022-11-02 21:10:32,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:32,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:32,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:10:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:32,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:32,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:32,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:10:32,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:32,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:10:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:32,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:32,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:32,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:10:32,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:32,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:32,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:32,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603427153] [2022-11-02 21:10:32,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603427153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:32,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:32,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:10:32,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259944473] [2022-11-02 21:10:32,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:32,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:10:32,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:32,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:10:32,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:10:32,880 INFO L87 Difference]: Start difference. First operand 577 states and 919 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:10:38,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:38,980 INFO L93 Difference]: Finished difference Result 1273 states and 2080 transitions. [2022-11-02 21:10:38,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:10:38,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-02 21:10:38,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:38,987 INFO L225 Difference]: With dead ends: 1273 [2022-11-02 21:10:38,987 INFO L226 Difference]: Without dead ends: 773 [2022-11-02 21:10:38,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:38,991 INFO L413 NwaCegarLoop]: 811 mSDtfsCounter, 1183 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 2353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 310 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:38,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1268 Valid, 1611 Invalid, 2353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [310 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-02 21:10:38,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-11-02 21:10:39,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 581. [2022-11-02 21:10:39,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 454 states have (on average 1.5969162995594715) internal successors, (725), 477 states have internal predecessors, (725), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-02 21:10:39,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 922 transitions. [2022-11-02 21:10:39,152 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 922 transitions. Word has length 72 [2022-11-02 21:10:39,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:39,152 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 922 transitions. [2022-11-02 21:10:39,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:10:39,153 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 922 transitions. [2022-11-02 21:10:39,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-02 21:10:39,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:39,155 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:39,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-02 21:10:39,155 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:39,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:39,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1505150760, now seen corresponding path program 1 times [2022-11-02 21:10:39,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:39,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149618173] [2022-11-02 21:10:39,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:39,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:39,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:10:39,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:39,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:10:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:39,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 21:10:39,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:39,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:39,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:39,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:39,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:10:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:39,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:39,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149618173] [2022-11-02 21:10:39,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149618173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:39,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:39,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:10:39,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458067898] [2022-11-02 21:10:39,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:39,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:10:39,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:39,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:10:39,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:10:39,639 INFO L87 Difference]: Start difference. First operand 581 states and 922 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:10:46,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:46,002 INFO L93 Difference]: Finished difference Result 1315 states and 2123 transitions. [2022-11-02 21:10:46,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:10:46,003 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-02 21:10:46,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:46,009 INFO L225 Difference]: With dead ends: 1315 [2022-11-02 21:10:46,009 INFO L226 Difference]: Without dead ends: 732 [2022-11-02 21:10:46,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:46,012 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 660 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 2352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:46,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 1663 Invalid, 2352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2207 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-02 21:10:46,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2022-11-02 21:10:46,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 562. [2022-11-02 21:10:46,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 438 states have (on average 1.6050228310502284) internal successors, (703), 459 states have internal predecessors, (703), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-02 21:10:46,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 896 transitions. [2022-11-02 21:10:46,186 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 896 transitions. Word has length 72 [2022-11-02 21:10:46,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:46,187 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 896 transitions. [2022-11-02 21:10:46,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:10:46,187 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 896 transitions. [2022-11-02 21:10:46,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-02 21:10:46,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:46,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:46,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-02 21:10:46,189 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:46,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:46,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2014302141, now seen corresponding path program 1 times [2022-11-02 21:10:46,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:46,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402078781] [2022-11-02 21:10:46,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:46,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:46,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:10:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:46,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:46,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:10:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:46,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-02 21:10:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:46,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:46,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:46,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:46,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:46,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:10:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:46,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:46,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402078781] [2022-11-02 21:10:46,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402078781] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:46,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:46,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 21:10:46,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699882276] [2022-11-02 21:10:46,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:46,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 21:10:46,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:46,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 21:10:46,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 21:10:46,716 INFO L87 Difference]: Start difference. First operand 562 states and 896 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:10:53,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:10:53,023 INFO L93 Difference]: Finished difference Result 1250 states and 2038 transitions. [2022-11-02 21:10:53,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:10:53,023 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-11-02 21:10:53,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:10:53,028 INFO L225 Difference]: With dead ends: 1250 [2022-11-02 21:10:53,028 INFO L226 Difference]: Without dead ends: 753 [2022-11-02 21:10:53,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:10:53,032 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 709 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 2181 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 2332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:10:53,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [794 Valid, 1633 Invalid, 2332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2181 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-02 21:10:53,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-11-02 21:10:53,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 567. [2022-11-02 21:10:53,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 443 states have (on average 1.5981941309255079) internal successors, (708), 464 states have internal predecessors, (708), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-02 21:10:53,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 901 transitions. [2022-11-02 21:10:53,160 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 901 transitions. Word has length 73 [2022-11-02 21:10:53,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:10:53,160 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 901 transitions. [2022-11-02 21:10:53,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 21:10:53,161 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 901 transitions. [2022-11-02 21:10:53,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-02 21:10:53,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:10:53,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:10:53,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-02 21:10:53,163 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:10:53,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:10:53,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1972759379, now seen corresponding path program 1 times [2022-11-02 21:10:53,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:10:53,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453533158] [2022-11-02 21:10:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:10:53,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:10:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:53,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:10:53,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:53,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:53,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:53,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:10:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:53,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:10:53,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:53,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:53,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:10:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:53,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:10:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:10:53,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:10:53,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:10:53,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453533158] [2022-11-02 21:10:53,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453533158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:10:53,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:10:53,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 21:10:53,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499256776] [2022-11-02 21:10:53,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:10:53,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:10:53,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:10:53,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:10:53,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:10:53,937 INFO L87 Difference]: Start difference. First operand 567 states and 901 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-02 21:11:06,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:06,166 INFO L93 Difference]: Finished difference Result 2063 states and 3453 transitions. [2022-11-02 21:11:06,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:11:06,167 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2022-11-02 21:11:06,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:06,180 INFO L225 Difference]: With dead ends: 2063 [2022-11-02 21:11:06,180 INFO L226 Difference]: Without dead ends: 1574 [2022-11-02 21:11:06,183 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:11:06,184 INFO L413 NwaCegarLoop]: 878 mSDtfsCounter, 3549 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 3235 mSolverCounterSat, 1083 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3640 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 4318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1083 IncrementalHoareTripleChecker+Valid, 3235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:06,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3640 Valid, 2044 Invalid, 4318 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1083 Valid, 3235 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2022-11-02 21:11:06,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1574 states. [2022-11-02 21:11:06,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1574 to 1082. [2022-11-02 21:11:06,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 845 states have (on average 1.6331360946745561) internal successors, (1380), 875 states have internal predecessors, (1380), 192 states have call successors, (192), 43 states have call predecessors, (192), 44 states have return successors, (194), 176 states have call predecessors, (194), 187 states have call successors, (194) [2022-11-02 21:11:06,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1766 transitions. [2022-11-02 21:11:06,542 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1766 transitions. Word has length 74 [2022-11-02 21:11:06,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:06,543 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1766 transitions. [2022-11-02 21:11:06,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-02 21:11:06,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1766 transitions. [2022-11-02 21:11:06,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 21:11:06,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:06,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:06,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-02 21:11:06,551 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:06,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:06,552 INFO L85 PathProgramCache]: Analyzing trace with hash -57855248, now seen corresponding path program 1 times [2022-11-02 21:11:06,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:06,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076720383] [2022-11-02 21:11:06,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:06,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:11:06,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:06,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:06,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:11:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:07,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:11:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:07,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:07,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:07,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:11:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:07,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:07,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:07,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:07,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 21:11:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:07,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-02 21:11:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:07,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:07,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 21:11:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:07,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 21:11:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:07,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 21:11:07,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:07,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076720383] [2022-11-02 21:11:07,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076720383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:07,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:07,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-02 21:11:07,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136081576] [2022-11-02 21:11:07,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:07,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:11:07,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:07,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:11:07,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:11:07,999 INFO L87 Difference]: Start difference. First operand 1082 states and 1766 transitions. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-02 21:11:24,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:24,028 INFO L93 Difference]: Finished difference Result 2967 states and 5114 transitions. [2022-11-02 21:11:24,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 21:11:24,029 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) Word has length 127 [2022-11-02 21:11:24,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:24,043 INFO L225 Difference]: With dead ends: 2967 [2022-11-02 21:11:24,044 INFO L226 Difference]: Without dead ends: 1963 [2022-11-02 21:11:24,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=220, Invalid=772, Unknown=0, NotChecked=0, Total=992 [2022-11-02 21:11:24,051 INFO L413 NwaCegarLoop]: 986 mSDtfsCounter, 3842 mSDsluCounter, 3135 mSDsCounter, 0 mSdLazyCounter, 10106 mSolverCounterSat, 1971 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3842 SdHoareTripleChecker+Valid, 4121 SdHoareTripleChecker+Invalid, 12077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1971 IncrementalHoareTripleChecker+Valid, 10106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:24,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3842 Valid, 4121 Invalid, 12077 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1971 Valid, 10106 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2022-11-02 21:11:24,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1963 states. [2022-11-02 21:11:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1963 to 1100. [2022-11-02 21:11:24,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 859 states have (on average 1.6228172293364378) internal successors, (1394), 887 states have internal predecessors, (1394), 192 states have call successors, (192), 43 states have call predecessors, (192), 48 states have return successors, (232), 182 states have call predecessors, (232), 187 states have call successors, (232) [2022-11-02 21:11:24,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1818 transitions. [2022-11-02 21:11:24,376 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1818 transitions. Word has length 127 [2022-11-02 21:11:24,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:24,377 INFO L495 AbstractCegarLoop]: Abstraction has 1100 states and 1818 transitions. [2022-11-02 21:11:24,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-02 21:11:24,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1818 transitions. [2022-11-02 21:11:24,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-02 21:11:24,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:24,384 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:24,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-02 21:11:24,384 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:24,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:24,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1317325395, now seen corresponding path program 1 times [2022-11-02 21:11:24,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:24,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301860484] [2022-11-02 21:11:24,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:24,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:24,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:11:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:24,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:24,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:11:24,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:25,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:11:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:25,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:25,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:25,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:11:25,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:25,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:25,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 21:11:25,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:25,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:11:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:25,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:25,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 21:11:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:25,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-02 21:11:25,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:25,778 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 21:11:25,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:25,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301860484] [2022-11-02 21:11:25,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301860484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:11:25,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767257347] [2022-11-02 21:11:25,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:25,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:25,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:11:25,786 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:11:25,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:11:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:26,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:11:26,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:11:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-02 21:11:26,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:11:26,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767257347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:26,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:11:26,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [20] total 26 [2022-11-02 21:11:26,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871805562] [2022-11-02 21:11:26,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:26,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:11:26,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:26,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:11:26,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2022-11-02 21:11:26,684 INFO L87 Difference]: Start difference. First operand 1100 states and 1818 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-02 21:11:31,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:11:31,649 INFO L93 Difference]: Finished difference Result 3086 states and 5172 transitions. [2022-11-02 21:11:31,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 21:11:31,651 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 127 [2022-11-02 21:11:31,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:11:31,667 INFO L225 Difference]: With dead ends: 3086 [2022-11-02 21:11:31,667 INFO L226 Difference]: Without dead ends: 2062 [2022-11-02 21:11:31,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=132, Invalid=1200, Unknown=0, NotChecked=0, Total=1332 [2022-11-02 21:11:31,673 INFO L413 NwaCegarLoop]: 1114 mSDtfsCounter, 1706 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 4475 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1789 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 4847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 4475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:11:31,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1789 Valid, 2715 Invalid, 4847 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 4475 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-02 21:11:31,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2022-11-02 21:11:32,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 1888. [2022-11-02 21:11:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1460 states have (on average 1.608904109589041) internal successors, (2349), 1496 states have internal predecessors, (2349), 338 states have call successors, (338), 69 states have call predecessors, (338), 89 states have return successors, (446), 333 states have call predecessors, (446), 333 states have call successors, (446) [2022-11-02 21:11:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 3133 transitions. [2022-11-02 21:11:32,244 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 3133 transitions. Word has length 127 [2022-11-02 21:11:32,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:11:32,245 INFO L495 AbstractCegarLoop]: Abstraction has 1888 states and 3133 transitions. [2022-11-02 21:11:32,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-02 21:11:32,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 3133 transitions. [2022-11-02 21:11:32,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-02 21:11:32,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:11:32,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:11:32,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:11:32,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:11:32,470 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:11:32,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:11:32,470 INFO L85 PathProgramCache]: Analyzing trace with hash -146414308, now seen corresponding path program 1 times [2022-11-02 21:11:32,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:11:32,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482564530] [2022-11-02 21:11:32,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:11:32,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:11:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:32,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:11:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:32,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:32,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:11:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:33,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:11:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:33,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:33,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:33,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:11:33,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:33,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:33,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:33,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 21:11:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:33,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:11:33,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:33,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:33,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:11:33,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:33,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 21:11:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:33,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-02 21:11:33,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:11:33,866 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-02 21:11:33,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:11:33,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482564530] [2022-11-02 21:11:33,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482564530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:11:33,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:11:33,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-02 21:11:33,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391746621] [2022-11-02 21:11:33,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:11:33,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:11:33,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:11:33,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:11:33,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:11:33,869 INFO L87 Difference]: Start difference. First operand 1888 states and 3133 transitions. Second operand has 16 states, 16 states have (on average 5.5625) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-02 21:12:06,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:06,572 INFO L93 Difference]: Finished difference Result 7517 states and 13489 transitions. [2022-11-02 21:12:06,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-02 21:12:06,573 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) Word has length 129 [2022-11-02 21:12:06,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:06,614 INFO L225 Difference]: With dead ends: 7517 [2022-11-02 21:12:06,614 INFO L226 Difference]: Without dead ends: 5707 [2022-11-02 21:12:06,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=396, Invalid=1766, Unknown=0, NotChecked=0, Total=2162 [2022-11-02 21:12:06,629 INFO L413 NwaCegarLoop]: 1924 mSDtfsCounter, 6391 mSDsluCounter, 6809 mSDsCounter, 0 mSdLazyCounter, 20101 mSolverCounterSat, 3254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6391 SdHoareTripleChecker+Valid, 8733 SdHoareTripleChecker+Invalid, 23355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3254 IncrementalHoareTripleChecker+Valid, 20101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:06,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6391 Valid, 8733 Invalid, 23355 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3254 Valid, 20101 Invalid, 0 Unknown, 0 Unchecked, 24.9s Time] [2022-11-02 21:12:06,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5707 states. [2022-11-02 21:12:08,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5707 to 4397. [2022-11-02 21:12:08,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4397 states, 3310 states have (on average 1.6042296072507554) internal successors, (5310), 3408 states have internal predecessors, (5310), 884 states have call successors, (884), 134 states have call predecessors, (884), 202 states have return successors, (1360), 897 states have call predecessors, (1360), 879 states have call successors, (1360) [2022-11-02 21:12:08,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4397 states to 4397 states and 7554 transitions. [2022-11-02 21:12:08,483 INFO L78 Accepts]: Start accepts. Automaton has 4397 states and 7554 transitions. Word has length 129 [2022-11-02 21:12:08,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:08,483 INFO L495 AbstractCegarLoop]: Abstraction has 4397 states and 7554 transitions. [2022-11-02 21:12:08,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5625) internal successors, (89), 9 states have internal predecessors, (89), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-02 21:12:08,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4397 states and 7554 transitions. [2022-11-02 21:12:08,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-02 21:12:08,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:08,500 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:08,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-02 21:12:08,501 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:08,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:08,501 INFO L85 PathProgramCache]: Analyzing trace with hash 783254095, now seen corresponding path program 1 times [2022-11-02 21:12:08,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:08,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358658657] [2022-11-02 21:12:08,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:08,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:08,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:12:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:08,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:12:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:08,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:12:08,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:12:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:12:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:12:09,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:12:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:12:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:12:09,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 21:12:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:12:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:12:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:12:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-02 21:12:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-02 21:12:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-02 21:12:09,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:09,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358658657] [2022-11-02 21:12:09,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358658657] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:12:09,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926466743] [2022-11-02 21:12:09,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:09,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:12:09,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:12:09,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:12:09,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:12:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:09,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 21:12:09,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:12:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-02 21:12:10,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:12:10,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926466743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:10,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:12:10,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2022-11-02 21:12:10,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231247669] [2022-11-02 21:12:10,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:10,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:12:10,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:10,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:12:10,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:12:10,115 INFO L87 Difference]: Start difference. First operand 4397 states and 7554 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 21:12:12,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:12:12,044 INFO L93 Difference]: Finished difference Result 8760 states and 15398 transitions. [2022-11-02 21:12:12,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:12:12,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2022-11-02 21:12:12,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:12:12,080 INFO L225 Difference]: With dead ends: 8760 [2022-11-02 21:12:12,081 INFO L226 Difference]: Without dead ends: 4449 [2022-11-02 21:12:12,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 153 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-02 21:12:12,111 INFO L413 NwaCegarLoop]: 859 mSDtfsCounter, 821 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 21:12:12,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 2220 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 21:12:12,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4449 states. [2022-11-02 21:12:12,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4449 to 1928. [2022-11-02 21:12:12,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1928 states, 1492 states have (on average 1.6092493297587132) internal successors, (2401), 1532 states have internal predecessors, (2401), 338 states have call successors, (338), 73 states have call predecessors, (338), 97 states have return successors, (450), 333 states have call predecessors, (450), 333 states have call successors, (450) [2022-11-02 21:12:12,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 3189 transitions. [2022-11-02 21:12:12,802 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 3189 transitions. Word has length 128 [2022-11-02 21:12:12,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:12:12,803 INFO L495 AbstractCegarLoop]: Abstraction has 1928 states and 3189 transitions. [2022-11-02 21:12:12,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-02 21:12:12,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 3189 transitions. [2022-11-02 21:12:12,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-02 21:12:12,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:12:12,808 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:12:12,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 21:12:13,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb4e8381-e0c9-4baf-8d57-41710ea766f8/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-02 21:12:13,034 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:12:13,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:12:13,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1370378610, now seen corresponding path program 1 times [2022-11-02 21:12:13,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:12:13,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043091685] [2022-11-02 21:12:13,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:12:13,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:12:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:13,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:12:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:13,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:12:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:13,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 21:12:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:13,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:12:13,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:13,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:12:13,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:13,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:12:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:12:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:12:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:12:14,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-02 21:12:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-02 21:12:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:12:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:12:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 21:12:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 21:12:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:12:14,498 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-02 21:12:14,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:12:14,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043091685] [2022-11-02 21:12:14,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043091685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:12:14,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:12:14,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-02 21:12:14,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454178551] [2022-11-02 21:12:14,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:12:14,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 21:12:14,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:12:14,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 21:12:14,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:12:14,500 INFO L87 Difference]: Start difference. First operand 1928 states and 3189 transitions. Second operand has 16 states, 16 states have (on average 5.625) internal successors, (90), 9 states have internal predecessors, (90), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14)