./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R --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 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e --- 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-38b53e6 [2022-11-25 17:10:45,111 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 17:10:45,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 17:10:45,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 17:10:45,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 17:10:45,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 17:10:45,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 17:10:45,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 17:10:45,177 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 17:10:45,182 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 17:10:45,184 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 17:10:45,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 17:10:45,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 17:10:45,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 17:10:45,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 17:10:45,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 17:10:45,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 17:10:45,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 17:10:45,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 17:10:45,207 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 17:10:45,209 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 17:10:45,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 17:10:45,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 17:10:45,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 17:10:45,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 17:10:45,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 17:10:45,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 17:10:45,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 17:10:45,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 17:10:45,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 17:10:45,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 17:10:45,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 17:10:45,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 17:10:45,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 17:10:45,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 17:10:45,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 17:10:45,239 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 17:10:45,239 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 17:10:45,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 17:10:45,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 17:10:45,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 17:10:45,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 17:10:45,285 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 17:10:45,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 17:10:45,286 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 17:10:45,287 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 17:10:45,288 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 17:10:45,288 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 17:10:45,289 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 17:10:45,289 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 17:10:45,289 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 17:10:45,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 17:10:45,291 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 17:10:45,291 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 17:10:45,291 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 17:10:45,291 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 17:10:45,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 17:10:45,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 17:10:45,292 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 17:10:45,292 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 17:10:45,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 17:10:45,293 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 17:10:45,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 17:10:45,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 17:10:45,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 17:10:45,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 17:10:45,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:10:45,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 17:10:45,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 17:10:45,295 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 17:10:45,295 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 17:10:45,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 17:10:45,296 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 17:10:45,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 17:10:45,297 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 17:10:45,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 17:10:45,297 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1493e9da3ad278988eda47a556733ebc5ac5411d3350d76fb478293d9e5d934e [2022-11-25 17:10:45,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 17:10:45,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 17:10:45,687 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 17:10:45,689 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 17:10:45,690 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 17:10:45,691 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2022-11-25 17:10:48,887 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 17:10:49,333 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 17:10:49,338 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c [2022-11-25 17:10:49,370 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/data/d22b49eaa/2a5c3d1468f54e31b390668780461b4b/FLAG00a0c8922 [2022-11-25 17:10:49,390 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/data/d22b49eaa/2a5c3d1468f54e31b390668780461b4b [2022-11-25 17:10:49,393 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 17:10:49,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 17:10:49,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 17:10:49,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 17:10:49,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 17:10:49,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:10:49" (1/1) ... [2022-11-25 17:10:49,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a0099f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:10:49, skipping insertion in model container [2022-11-25 17:10:49,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 05:10:49" (1/1) ... [2022-11-25 17:10:49,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 17:10:49,525 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 17:10:49,851 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2022-11-25 17:10:50,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:10:50,234 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 17:10:50,302 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/sv-benchmarks/c/product-lines/elevator_spec9_product30.cil.c[11768,11781] [2022-11-25 17:10:50,384 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 17:10:50,412 INFO L208 MainTranslator]: Completed translation [2022-11-25 17:10:50,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:10:50 WrapperNode [2022-11-25 17:10:50,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 17:10:50,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 17:10:50,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 17:10:50,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 17:10:50,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:10:50" (1/1) ... [2022-11-25 17:10:50,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:10:50" (1/1) ... [2022-11-25 17:10:50,539 INFO L138 Inliner]: procedures = 95, calls = 344, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 873 [2022-11-25 17:10:50,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 17:10:50,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 17:10:50,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 17:10:50,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 17:10:50,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:10:50" (1/1) ... [2022-11-25 17:10:50,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:10:50" (1/1) ... [2022-11-25 17:10:50,580 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:10:50" (1/1) ... [2022-11-25 17:10:50,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:10:50" (1/1) ... [2022-11-25 17:10:50,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:10:50" (1/1) ... [2022-11-25 17:10:50,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:10:50" (1/1) ... [2022-11-25 17:10:50,660 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:10:50" (1/1) ... [2022-11-25 17:10:50,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:10:50" (1/1) ... [2022-11-25 17:10:50,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 17:10:50,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 17:10:50,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 17:10:50,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 17:10:50,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:10:50" (1/1) ... [2022-11-25 17:10:50,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 17:10:50,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:10:50,736 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 17:10:50,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 17:10:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 17:10:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-25 17:10:50,790 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-25 17:10:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-25 17:10:50,790 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-25 17:10:50,790 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-25 17:10:50,791 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-25 17:10:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-25 17:10:50,791 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-25 17:10:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-25 17:10:50,791 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-25 17:10:50,791 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-11-25 17:10:50,791 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-11-25 17:10:50,792 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-25 17:10:50,792 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-25 17:10:50,792 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-25 17:10:50,792 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-25 17:10:50,792 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-25 17:10:50,792 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-25 17:10:50,792 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-25 17:10:50,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-25 17:10:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-25 17:10:50,793 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-25 17:10:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-25 17:10:50,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-25 17:10:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-25 17:10:50,793 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-25 17:10:50,793 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-25 17:10:50,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-25 17:10:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-25 17:10:50,794 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-25 17:10:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-25 17:10:50,794 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-25 17:10:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-25 17:10:50,794 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-25 17:10:50,794 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-25 17:10:50,795 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-25 17:10:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-25 17:10:50,795 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-25 17:10:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2022-11-25 17:10:50,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2022-11-25 17:10:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 17:10:50,795 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-25 17:10:50,796 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-25 17:10:50,796 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-25 17:10:50,796 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-25 17:10:50,796 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-25 17:10:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-25 17:10:50,800 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-25 17:10:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-25 17:10:50,800 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-11-25 17:10:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-11-25 17:10:50,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 17:10:50,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 17:10:50,801 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-25 17:10:50,801 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-25 17:10:50,984 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 17:10:50,987 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 17:10:52,415 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 17:10:52,439 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 17:10:52,446 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 17:10:52,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:10:52 BoogieIcfgContainer [2022-11-25 17:10:52,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 17:10:52,455 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 17:10:52,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 17:10:52,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 17:10:52,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 05:10:49" (1/3) ... [2022-11-25 17:10:52,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f2bc13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:10:52, skipping insertion in model container [2022-11-25 17:10:52,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 05:10:50" (2/3) ... [2022-11-25 17:10:52,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76f2bc13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 05:10:52, skipping insertion in model container [2022-11-25 17:10:52,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 05:10:52" (3/3) ... [2022-11-25 17:10:52,466 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product30.cil.c [2022-11-25 17:10:52,490 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 17:10:52,490 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 17:10:52,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 17:10:52,600 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;@1d705fd9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 17:10:52,600 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 17:10:52,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 576 states, 452 states have (on average 1.6924778761061947) internal successors, (765), 475 states have internal predecessors, (765), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) [2022-11-25 17:10:52,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 17:10:52,632 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:10:52,633 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] [2022-11-25 17:10:52,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:10:52,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:10:52,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1316381237, now seen corresponding path program 1 times [2022-11-25 17:10:52,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:10:52,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670072922] [2022-11-25 17:10:52,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:10:52,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:10:52,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:53,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:10:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:53,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:10:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:53,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:10:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:53,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 17:10:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:53,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:10:53,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:53,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:10:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:53,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:10:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:53,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:10:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:10:54,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:10:54,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:10:54,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670072922] [2022-11-25 17:10:54,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670072922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:10:54,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:10:54,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:10:54,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415769215] [2022-11-25 17:10:54,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:10:54,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:10:54,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:10:54,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:10:54,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:10:54,095 INFO L87 Difference]: Start difference. First operand has 576 states, 452 states have (on average 1.6924778761061947) internal successors, (765), 475 states have internal predecessors, (765), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (96), 89 states have call predecessors, (96), 96 states have call successors, (96) 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:11:01,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:01,732 INFO L93 Difference]: Finished difference Result 1286 states and 2168 transitions. [2022-11-25 17:11:01,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:11:01,735 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2022-11-25 17:11:01,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:01,757 INFO L225 Difference]: With dead ends: 1286 [2022-11-25 17:11:01,757 INFO L226 Difference]: Without dead ends: 722 [2022-11-25 17:11:01,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:11:01,771 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1182 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 2695 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1264 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 2952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 2695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:01,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1264 Valid, 1194 Invalid, 2952 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [257 Valid, 2695 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-25 17:11:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-25 17:11:02,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 568. [2022-11-25 17:11:02,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 446 states have (on average 1.688340807174888) internal successors, (753), 467 states have internal predecessors, (753), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-25 17:11:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 940 transitions. [2022-11-25 17:11:02,031 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 940 transitions. Word has length 62 [2022-11-25 17:11:02,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:02,033 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 940 transitions. [2022-11-25 17:11:02,034 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:11:02,034 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 940 transitions. [2022-11-25 17:11:02,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 17:11:02,050 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:02,051 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] [2022-11-25 17:11:02,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 17:11:02,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:02,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:02,053 INFO L85 PathProgramCache]: Analyzing trace with hash 2014226098, now seen corresponding path program 1 times [2022-11-25 17:11:02,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:02,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866440707] [2022-11-25 17:11:02,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:02,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:02,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:11:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:02,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:02,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:02,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:11:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:02,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-25 17:11:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:02,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:02,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:02,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:11:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:02,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:11:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:02,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:02,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:02,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866440707] [2022-11-25 17:11:02,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866440707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:02,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:02,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:11:02,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527353180] [2022-11-25 17:11:02,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:02,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:11:02,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:02,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:11:02,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:11:02,689 INFO L87 Difference]: Start difference. First operand 568 states and 940 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:11:09,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:09,966 INFO L93 Difference]: Finished difference Result 1272 states and 2134 transitions. [2022-11-25 17:11:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:11:09,971 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-11-25 17:11:09,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:09,980 INFO L225 Difference]: With dead ends: 1272 [2022-11-25 17:11:09,981 INFO L226 Difference]: Without dead ends: 722 [2022-11-25 17:11:09,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:11:09,987 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 709 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 2991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:09,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1168 Invalid, 2991 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-25 17:11:09,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-25 17:11:10,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 568. [2022-11-25 17:11:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 446 states have (on average 1.6860986547085202) internal successors, (752), 467 states have internal predecessors, (752), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-25 17:11:10,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 939 transitions. [2022-11-25 17:11:10,183 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 939 transitions. Word has length 65 [2022-11-25 17:11:10,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:10,184 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 939 transitions. [2022-11-25 17:11:10,184 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:11:10,184 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 939 transitions. [2022-11-25 17:11:10,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 17:11:10,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:10,187 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] [2022-11-25 17:11:10,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 17:11:10,188 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:10,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:10,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1200980869, now seen corresponding path program 1 times [2022-11-25 17:11:10,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:10,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854943444] [2022-11-25 17:11:10,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:10,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:10,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:11:10,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:10,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:10,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:10,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:11:10,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:10,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 17:11:10,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:10,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:10,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:10,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:11:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:10,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:11:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:10,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:10,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:10,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854943444] [2022-11-25 17:11:10,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854943444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:10,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:10,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:11:10,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61959790] [2022-11-25 17:11:10,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:10,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:11:10,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:10,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:11:10,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:11:10,744 INFO L87 Difference]: Start difference. First operand 568 states and 939 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:11:17,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:17,185 INFO L93 Difference]: Finished difference Result 1272 states and 2133 transitions. [2022-11-25 17:11:17,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:11:17,187 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 66 [2022-11-25 17:11:17,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:17,206 INFO L225 Difference]: With dead ends: 1272 [2022-11-25 17:11:17,206 INFO L226 Difference]: Without dead ends: 722 [2022-11-25 17:11:17,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:11:17,221 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 1179 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1261 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 2950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:17,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1261 Valid, 1145 Invalid, 2950 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [263 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-25 17:11:17,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-25 17:11:17,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 568. [2022-11-25 17:11:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 446 states have (on average 1.6838565022421526) internal successors, (751), 467 states have internal predecessors, (751), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-25 17:11:17,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 938 transitions. [2022-11-25 17:11:17,400 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 938 transitions. Word has length 66 [2022-11-25 17:11:17,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:17,401 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 938 transitions. [2022-11-25 17:11:17,401 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:11:17,402 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 938 transitions. [2022-11-25 17:11:17,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 17:11:17,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:17,404 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] [2022-11-25 17:11:17,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 17:11:17,405 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:17,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:17,405 INFO L85 PathProgramCache]: Analyzing trace with hash 541895310, now seen corresponding path program 1 times [2022-11-25 17:11:17,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:17,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837784671] [2022-11-25 17:11:17,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:17,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:17,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:17,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:11:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:17,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:17,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:17,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-25 17:11:17,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 17:11:17,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:17,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:17,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:11:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:17,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:11:17,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:17,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:17,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:17,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837784671] [2022-11-25 17:11:17,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837784671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:17,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:17,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:11:17,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738935303] [2022-11-25 17:11:17,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:17,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:11:17,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:17,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:11:17,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:11:17,973 INFO L87 Difference]: Start difference. First operand 568 states and 938 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:11:24,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:24,986 INFO L93 Difference]: Finished difference Result 1272 states and 2132 transitions. [2022-11-25 17:11:24,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:11:24,987 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 67 [2022-11-25 17:11:24,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:24,993 INFO L225 Difference]: With dead ends: 1272 [2022-11-25 17:11:24,993 INFO L226 Difference]: Without dead ends: 722 [2022-11-25 17:11:24,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:11:24,998 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 704 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 2864 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 2982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:24,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1174 Invalid, 2982 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 2864 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-25 17:11:25,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-25 17:11:25,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 568. [2022-11-25 17:11:25,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 446 states have (on average 1.6816143497757847) internal successors, (750), 467 states have internal predecessors, (750), 96 states have call successors, (96), 26 states have call predecessors, (96), 25 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-25 17:11:25,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 937 transitions. [2022-11-25 17:11:25,117 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 937 transitions. Word has length 67 [2022-11-25 17:11:25,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:25,117 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 937 transitions. [2022-11-25 17:11:25,117 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:11:25,118 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 937 transitions. [2022-11-25 17:11:25,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-25 17:11:25,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:25,120 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] [2022-11-25 17:11:25,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 17:11:25,120 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:25,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:25,121 INFO L85 PathProgramCache]: Analyzing trace with hash 366792225, now seen corresponding path program 1 times [2022-11-25 17:11:25,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:25,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505046998] [2022-11-25 17:11:25,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:25,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:25,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:11:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:25,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:25,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-25 17:11:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:25,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 17:11:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:25,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:25,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:25,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:25,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:11:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:25,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:11:25,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:25,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:25,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:25,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505046998] [2022-11-25 17:11:25,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505046998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:25,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:25,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:11:25,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103393523] [2022-11-25 17:11:25,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:25,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:11:25,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:25,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:11:25,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:11:25,827 INFO L87 Difference]: Start difference. First operand 568 states and 937 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:11:33,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:33,524 INFO L93 Difference]: Finished difference Result 1284 states and 2155 transitions. [2022-11-25 17:11:33,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 17:11:33,525 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-25 17:11:33,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:33,531 INFO L225 Difference]: With dead ends: 1284 [2022-11-25 17:11:33,531 INFO L226 Difference]: Without dead ends: 734 [2022-11-25 17:11:33,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:11:33,539 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 1227 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 5078 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 2030 SdHoareTripleChecker+Invalid, 5350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 5078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:33,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 2030 Invalid, 5350 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [272 Valid, 5078 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-25 17:11:33,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-11-25 17:11:33,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 572. [2022-11-25 17:11:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 449 states have (on average 1.6748329621380846) internal successors, (752), 470 states have internal predecessors, (752), 96 states have call successors, (96), 26 states have call predecessors, (96), 26 states have return successors, (93), 89 states have call predecessors, (93), 91 states have call successors, (93) [2022-11-25 17:11:33,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 941 transitions. [2022-11-25 17:11:33,665 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 941 transitions. Word has length 68 [2022-11-25 17:11:33,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:33,665 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 941 transitions. [2022-11-25 17:11:33,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:11:33,665 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 941 transitions. [2022-11-25 17:11:33,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-25 17:11:33,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:33,668 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:33,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 17:11:33,669 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:33,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:33,669 INFO L85 PathProgramCache]: Analyzing trace with hash -2050407705, now seen corresponding path program 1 times [2022-11-25 17:11:33,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:33,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329487749] [2022-11-25 17:11:33,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:33,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:34,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:11:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:34,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:34,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:11:34,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:34,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:11:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:34,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:34,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:34,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:11:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:34,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:11:34,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-25 17:11:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:11:34,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:34,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329487749] [2022-11-25 17:11:34,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329487749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:34,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:34,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 17:11:34,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150094686] [2022-11-25 17:11:34,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:34,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:11:34,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:34,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:11:34,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:11:34,585 INFO L87 Difference]: Start difference. First operand 572 states and 941 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 17:11:48,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:48,106 INFO L93 Difference]: Finished difference Result 1576 states and 2624 transitions. [2022-11-25 17:11:48,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-25 17:11:48,107 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 75 [2022-11-25 17:11:48,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:48,117 INFO L225 Difference]: With dead ends: 1576 [2022-11-25 17:11:48,118 INFO L226 Difference]: Without dead ends: 1062 [2022-11-25 17:11:48,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2022-11-25 17:11:48,126 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1941 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 9267 mSolverCounterSat, 408 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 2762 SdHoareTripleChecker+Invalid, 9675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 408 IncrementalHoareTripleChecker+Valid, 9267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:48,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 2762 Invalid, 9675 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [408 Valid, 9267 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2022-11-25 17:11:48,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2022-11-25 17:11:48,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 821. [2022-11-25 17:11:48,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 647 states have (on average 1.6491499227202473) internal successors, (1067), 668 states have internal predecessors, (1067), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-25 17:11:48,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1336 transitions. [2022-11-25 17:11:48,364 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1336 transitions. Word has length 75 [2022-11-25 17:11:48,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:48,365 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1336 transitions. [2022-11-25 17:11:48,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 17:11:48,366 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1336 transitions. [2022-11-25 17:11:48,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-25 17:11:48,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:48,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:48,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 17:11:48,372 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:48,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:48,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1074794078, now seen corresponding path program 1 times [2022-11-25 17:11:48,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:48,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758167991] [2022-11-25 17:11:48,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:48,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:48,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:11:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:48,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:48,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:11:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:48,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-25 17:11:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:48,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:48,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:11:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:48,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:11:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:48,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:48,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758167991] [2022-11-25 17:11:48,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758167991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:48,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:48,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:11:48,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147809964] [2022-11-25 17:11:48,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:48,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:11:48,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:48,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:11:48,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:11:48,919 INFO L87 Difference]: Start difference. First operand 821 states and 1336 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:11:55,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:11:55,380 INFO L93 Difference]: Finished difference Result 1772 states and 2918 transitions. [2022-11-25 17:11:55,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:11:55,381 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-11-25 17:11:55,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:11:55,388 INFO L225 Difference]: With dead ends: 1772 [2022-11-25 17:11:55,388 INFO L226 Difference]: Without dead ends: 1009 [2022-11-25 17:11:55,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:11:55,393 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 791 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 2884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:11:55,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1159 Invalid, 2884 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [122 Valid, 2762 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-25 17:11:55,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-11-25 17:11:55,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 821. [2022-11-25 17:11:55,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 647 states have (on average 1.6414219474497682) internal successors, (1062), 668 states have internal predecessors, (1062), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-25 17:11:55,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1331 transitions. [2022-11-25 17:11:55,665 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1331 transitions. Word has length 75 [2022-11-25 17:11:55,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:11:55,666 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1331 transitions. [2022-11-25 17:11:55,666 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, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:11:55,666 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1331 transitions. [2022-11-25 17:11:55,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 17:11:55,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:11:55,669 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:11:55,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 17:11:55,670 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:11:55,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:11:55,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1219775336, now seen corresponding path program 1 times [2022-11-25 17:11:55,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:11:55,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673938369] [2022-11-25 17:11:55,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:11:55,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:11:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:55,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:11:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:55,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:55,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:55,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:11:55,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:56,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:11:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:56,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:56,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:11:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:56,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:11:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:56,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:11:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:11:56,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:11:56,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:11:56,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673938369] [2022-11-25 17:11:56,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673938369] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:11:56,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:11:56,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:11:56,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276926609] [2022-11-25 17:11:56,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:11:56,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:11:56,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:11:56,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:11:56,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:11:56,170 INFO L87 Difference]: Start difference. First operand 821 states and 1331 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:12:02,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:12:02,582 INFO L93 Difference]: Finished difference Result 1772 states and 2913 transitions. [2022-11-25 17:12:02,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:12:02,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2022-11-25 17:12:02,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:12:02,589 INFO L225 Difference]: With dead ends: 1772 [2022-11-25 17:12:02,589 INFO L226 Difference]: Without dead ends: 1009 [2022-11-25 17:12:02,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:12:02,597 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 784 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2746 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:12:02,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 1159 Invalid, 2868 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [122 Valid, 2746 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-25 17:12:02,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-11-25 17:12:02,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 821. [2022-11-25 17:12:02,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 647 states have (on average 1.6336939721792891) internal successors, (1057), 668 states have internal predecessors, (1057), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-25 17:12:02,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1326 transitions. [2022-11-25 17:12:02,827 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1326 transitions. Word has length 76 [2022-11-25 17:12:02,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:12:02,827 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1326 transitions. [2022-11-25 17:12:02,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:12:02,827 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1326 transitions. [2022-11-25 17:12:02,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 17:12:02,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:12:02,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:02,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 17:12:02,830 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:12:02,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:02,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1673039613, now seen corresponding path program 1 times [2022-11-25 17:12:02,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:02,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359126961] [2022-11-25 17:12:02,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:02,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:12:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:03,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:03,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:12:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:03,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:12:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:03,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:12:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:03,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:12:03,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:03,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:03,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359126961] [2022-11-25 17:12:03,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359126961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:03,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:03,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:12:03,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049632059] [2022-11-25 17:12:03,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:03,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:12:03,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:03,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:12:03,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:12:03,339 INFO L87 Difference]: Start difference. First operand 821 states and 1326 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:12:09,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:12:09,259 INFO L93 Difference]: Finished difference Result 1772 states and 2908 transitions. [2022-11-25 17:12:09,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:12:09,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-11-25 17:12:09,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:12:09,267 INFO L225 Difference]: With dead ends: 1772 [2022-11-25 17:12:09,267 INFO L226 Difference]: Without dead ends: 1009 [2022-11-25 17:12:09,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:12:09,272 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 1254 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 2818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-25 17:12:09,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1336 Valid, 1140 Invalid, 2818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-25 17:12:09,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2022-11-25 17:12:09,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 821. [2022-11-25 17:12:09,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 647 states have (on average 1.6259659969088098) internal successors, (1052), 668 states have internal predecessors, (1052), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-25 17:12:09,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 1321 transitions. [2022-11-25 17:12:09,509 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 1321 transitions. Word has length 77 [2022-11-25 17:12:09,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:12:09,510 INFO L495 AbstractCegarLoop]: Abstraction has 821 states and 1321 transitions. [2022-11-25 17:12:09,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:12:09,510 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 1321 transitions. [2022-11-25 17:12:09,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-25 17:12:09,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:12:09,513 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:09,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 17:12:09,514 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:12:09,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:09,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1781030204, now seen corresponding path program 1 times [2022-11-25 17:12:09,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:09,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846899235] [2022-11-25 17:12:09,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:09,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:09,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:12:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:09,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:09,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:12:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:09,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:12:09,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:10,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:10,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:10,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:10,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:12:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:10,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:12:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:10,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:10,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:10,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846899235] [2022-11-25 17:12:10,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846899235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:10,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:10,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:12:10,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316410567] [2022-11-25 17:12:10,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:10,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:12:10,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:10,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:12:10,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:12:10,032 INFO L87 Difference]: Start difference. First operand 821 states and 1321 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:12:17,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:12:17,896 INFO L93 Difference]: Finished difference Result 1787 states and 2923 transitions. [2022-11-25 17:12:17,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:12:17,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 77 [2022-11-25 17:12:17,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:12:17,903 INFO L225 Difference]: With dead ends: 1787 [2022-11-25 17:12:17,903 INFO L226 Difference]: Without dead ends: 1030 [2022-11-25 17:12:17,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:12:17,907 INFO L413 NwaCegarLoop]: 351 mSDtfsCounter, 780 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 2743 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 2863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 2743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:12:17,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1146 Invalid, 2863 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [120 Valid, 2743 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-25 17:12:17,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2022-11-25 17:12:18,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 823. [2022-11-25 17:12:18,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 649 states have (on average 1.6240369799691834) internal successors, (1054), 670 states have internal predecessors, (1054), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-25 17:12:18,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1323 transitions. [2022-11-25 17:12:18,204 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1323 transitions. Word has length 77 [2022-11-25 17:12:18,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:12:18,204 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 1323 transitions. [2022-11-25 17:12:18,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:12:18,205 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1323 transitions. [2022-11-25 17:12:18,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-25 17:12:18,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:12:18,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:18,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 17:12:18,209 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:12:18,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:18,210 INFO L85 PathProgramCache]: Analyzing trace with hash -46710829, now seen corresponding path program 1 times [2022-11-25 17:12:18,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:18,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526434949] [2022-11-25 17:12:18,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:18,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:18,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:12:18,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:18,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:18,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:12:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:18,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 17:12:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:18,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:18,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:18,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:18,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:12:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:18,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:12:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:18,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:18,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:18,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526434949] [2022-11-25 17:12:18,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526434949] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:18,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:18,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:12:18,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517640179] [2022-11-25 17:12:18,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:18,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:12:18,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:18,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:12:18,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:12:18,733 INFO L87 Difference]: Start difference. First operand 823 states and 1323 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:12:25,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:12:25,533 INFO L93 Difference]: Finished difference Result 1778 states and 2909 transitions. [2022-11-25 17:12:25,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 17:12:25,534 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2022-11-25 17:12:25,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:12:25,541 INFO L225 Difference]: With dead ends: 1778 [2022-11-25 17:12:25,542 INFO L226 Difference]: Without dead ends: 1013 [2022-11-25 17:12:25,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:12:25,546 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 782 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 2828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-25 17:12:25,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 1149 Invalid, 2828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-25 17:12:25,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2022-11-25 17:12:25,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 823. [2022-11-25 17:12:25,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 649 states have (on average 1.6163328197226503) internal successors, (1049), 670 states have internal predecessors, (1049), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-25 17:12:25,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1318 transitions. [2022-11-25 17:12:25,885 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1318 transitions. Word has length 78 [2022-11-25 17:12:25,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:12:25,885 INFO L495 AbstractCegarLoop]: Abstraction has 823 states and 1318 transitions. [2022-11-25 17:12:25,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:12:25,886 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1318 transitions. [2022-11-25 17:12:25,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-25 17:12:25,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:12:25,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:25,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 17:12:25,889 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:12:25,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:25,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1615764426, now seen corresponding path program 1 times [2022-11-25 17:12:25,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:25,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194519518] [2022-11-25 17:12:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:25,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:26,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:12:26,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:26,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:26,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:26,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:12:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:26,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-25 17:12:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:26,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:26,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:26,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:26,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:12:26,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:26,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:12:26,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:26,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:26,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194519518] [2022-11-25 17:12:26,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194519518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:26,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:26,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:12:26,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891024864] [2022-11-25 17:12:26,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:26,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:12:26,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:26,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:12:26,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:12:26,495 INFO L87 Difference]: Start difference. First operand 823 states and 1318 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:12:33,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:12:33,336 INFO L93 Difference]: Finished difference Result 1791 states and 2920 transitions. [2022-11-25 17:12:33,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:12:33,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2022-11-25 17:12:33,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:12:33,344 INFO L225 Difference]: With dead ends: 1791 [2022-11-25 17:12:33,344 INFO L226 Difference]: Without dead ends: 1034 [2022-11-25 17:12:33,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:12:33,348 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 1250 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 2558 mSolverCounterSat, 260 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1332 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 2818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 260 IncrementalHoareTripleChecker+Valid, 2558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:12:33,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1332 Valid, 1132 Invalid, 2818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [260 Valid, 2558 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-25 17:12:33,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2022-11-25 17:12:33,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 826. [2022-11-25 17:12:33,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 652 states have (on average 1.6134969325153374) internal successors, (1052), 673 states have internal predecessors, (1052), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-25 17:12:33,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1321 transitions. [2022-11-25 17:12:33,677 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1321 transitions. Word has length 78 [2022-11-25 17:12:33,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:12:33,678 INFO L495 AbstractCegarLoop]: Abstraction has 826 states and 1321 transitions. [2022-11-25 17:12:33,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:12:33,678 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1321 transitions. [2022-11-25 17:12:33,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-25 17:12:33,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:12:33,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:33,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 17:12:33,684 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:12:33,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:33,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1272899672, now seen corresponding path program 1 times [2022-11-25 17:12:33,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:33,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175015120] [2022-11-25 17:12:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:33,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:33,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:12:33,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:34,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:12:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:34,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 17:12:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:34,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:34,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:34,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:34,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:12:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:34,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:12:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:34,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:34,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175015120] [2022-11-25 17:12:34,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175015120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:34,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:34,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 17:12:34,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001717607] [2022-11-25 17:12:34,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:34,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 17:12:34,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:34,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 17:12:34,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-25 17:12:34,324 INFO L87 Difference]: Start difference. First operand 826 states and 1321 transitions. Second operand has 9 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 17:12:43,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:12:43,841 INFO L93 Difference]: Finished difference Result 1795 states and 2926 transitions. [2022-11-25 17:12:43,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:12:43,842 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 79 [2022-11-25 17:12:43,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:12:43,852 INFO L225 Difference]: With dead ends: 1795 [2022-11-25 17:12:43,852 INFO L226 Difference]: Without dead ends: 1041 [2022-11-25 17:12:43,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-25 17:12:43,858 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 783 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 5050 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 2088 SdHoareTripleChecker+Invalid, 5171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 5050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-25 17:12:43,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [866 Valid, 2088 Invalid, 5171 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [121 Valid, 5050 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-25 17:12:43,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2022-11-25 17:12:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 837. [2022-11-25 17:12:44,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 660 states have (on average 1.6106060606060606) internal successors, (1063), 683 states have internal predecessors, (1063), 134 states have call successors, (134), 39 states have call predecessors, (134), 42 states have return successors, (139), 128 states have call predecessors, (139), 129 states have call successors, (139) [2022-11-25 17:12:44,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1336 transitions. [2022-11-25 17:12:44,159 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1336 transitions. Word has length 79 [2022-11-25 17:12:44,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:12:44,159 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 1336 transitions. [2022-11-25 17:12:44,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-25 17:12:44,160 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1336 transitions. [2022-11-25 17:12:44,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-25 17:12:44,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:12:44,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:44,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 17:12:44,167 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:12:44,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:44,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1010722263, now seen corresponding path program 1 times [2022-11-25 17:12:44,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:44,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279538845] [2022-11-25 17:12:44,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:44,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:44,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:12:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:44,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:44,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:12:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:44,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 17:12:44,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:44,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:44,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:44,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:44,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:44,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:12:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:44,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:12:44,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:44,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:44,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:44,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279538845] [2022-11-25 17:12:44,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279538845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:44,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:44,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:12:44,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467419590] [2022-11-25 17:12:44,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:44,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:12:44,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:44,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:12:44,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:12:44,733 INFO L87 Difference]: Start difference. First operand 837 states and 1336 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:12:52,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:12:52,449 INFO L93 Difference]: Finished difference Result 1818 states and 2957 transitions. [2022-11-25 17:12:52,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:12:52,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2022-11-25 17:12:52,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:12:52,456 INFO L225 Difference]: With dead ends: 1818 [2022-11-25 17:12:52,456 INFO L226 Difference]: Without dead ends: 1058 [2022-11-25 17:12:52,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:12:52,460 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 771 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 2834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:12:52,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1141 Invalid, 2834 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [122 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-25 17:12:52,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2022-11-25 17:12:52,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 841. [2022-11-25 17:12:52,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 841 states, 664 states have (on average 1.605421686746988) internal successors, (1066), 687 states have internal predecessors, (1066), 134 states have call successors, (134), 39 states have call predecessors, (134), 42 states have return successors, (139), 128 states have call predecessors, (139), 129 states have call successors, (139) [2022-11-25 17:12:52,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1339 transitions. [2022-11-25 17:12:52,688 INFO L78 Accepts]: Start accepts. Automaton has 841 states and 1339 transitions. Word has length 79 [2022-11-25 17:12:52,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:12:52,688 INFO L495 AbstractCegarLoop]: Abstraction has 841 states and 1339 transitions. [2022-11-25 17:12:52,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:12:52,689 INFO L276 IsEmpty]: Start isEmpty. Operand 841 states and 1339 transitions. [2022-11-25 17:12:52,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-25 17:12:52,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:12:52,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:12:52,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 17:12:52,692 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:12:52,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:12:52,692 INFO L85 PathProgramCache]: Analyzing trace with hash -534947849, now seen corresponding path program 1 times [2022-11-25 17:12:52,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:12:52,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438067433] [2022-11-25 17:12:52,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:12:52,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:12:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:52,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:12:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:52,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:52,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:12:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:53,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 17:12:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:53,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:53,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:12:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:53,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:12:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:53,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:12:53,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:12:53,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:12:53,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:12:53,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438067433] [2022-11-25 17:12:53,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438067433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:12:53,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:12:53,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:12:53,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760662858] [2022-11-25 17:12:53,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:12:53,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:12:53,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:12:53,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:12:53,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:12:53,155 INFO L87 Difference]: Start difference. First operand 841 states and 1339 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:13:00,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:00,326 INFO L93 Difference]: Finished difference Result 1860 states and 3000 transitions. [2022-11-25 17:13:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:13:00,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 79 [2022-11-25 17:13:00,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:00,333 INFO L225 Difference]: With dead ends: 1860 [2022-11-25 17:13:00,334 INFO L226 Difference]: Without dead ends: 1017 [2022-11-25 17:13:00,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:13:00,339 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 696 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 778 SdHoareTripleChecker+Valid, 1149 SdHoareTripleChecker+Invalid, 2850 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:00,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [778 Valid, 1149 Invalid, 2850 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 2732 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-25 17:13:00,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2022-11-25 17:13:00,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 822. [2022-11-25 17:13:00,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 648 states have (on average 1.6111111111111112) internal successors, (1044), 669 states have internal predecessors, (1044), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-25 17:13:00,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1313 transitions. [2022-11-25 17:13:00,661 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1313 transitions. Word has length 79 [2022-11-25 17:13:00,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:00,661 INFO L495 AbstractCegarLoop]: Abstraction has 822 states and 1313 transitions. [2022-11-25 17:13:00,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:13:00,662 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1313 transitions. [2022-11-25 17:13:00,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 17:13:00,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:00,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:00,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 17:13:00,665 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:00,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:00,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1380368817, now seen corresponding path program 1 times [2022-11-25 17:13:00,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:00,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113600198] [2022-11-25 17:13:00,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:00,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:00,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:13:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:00,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:13:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:13:00,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:01,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-25 17:13:01,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:01,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:13:01,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:01,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:13:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:01,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:13:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:01,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:13:01,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:01,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:01,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:01,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113600198] [2022-11-25 17:13:01,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113600198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:01,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:01,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 17:13:01,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786222883] [2022-11-25 17:13:01,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:01,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:13:01,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:01,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:13:01,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 17:13:01,191 INFO L87 Difference]: Start difference. First operand 822 states and 1313 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:13:08,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:08,987 INFO L93 Difference]: Finished difference Result 1795 states and 2915 transitions. [2022-11-25 17:13:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-25 17:13:08,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-11-25 17:13:08,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:08,994 INFO L225 Difference]: With dead ends: 1795 [2022-11-25 17:13:08,995 INFO L226 Difference]: Without dead ends: 1038 [2022-11-25 17:13:08,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-25 17:13:08,999 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 746 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 2692 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 2814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 2692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:09,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 1142 Invalid, 2814 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [122 Valid, 2692 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-25 17:13:09,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2022-11-25 17:13:09,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 827. [2022-11-25 17:13:09,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 827 states, 653 states have (on average 1.6064318529862174) internal successors, (1049), 674 states have internal predecessors, (1049), 133 states have call successors, (133), 39 states have call predecessors, (133), 40 states have return successors, (136), 127 states have call predecessors, (136), 128 states have call successors, (136) [2022-11-25 17:13:09,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 827 states to 827 states and 1318 transitions. [2022-11-25 17:13:09,320 INFO L78 Accepts]: Start accepts. Automaton has 827 states and 1318 transitions. Word has length 80 [2022-11-25 17:13:09,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:09,320 INFO L495 AbstractCegarLoop]: Abstraction has 827 states and 1318 transitions. [2022-11-25 17:13:09,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 17:13:09,321 INFO L276 IsEmpty]: Start isEmpty. Operand 827 states and 1318 transitions. [2022-11-25 17:13:09,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-25 17:13:09,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:09,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:09,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-25 17:13:09,324 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:09,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:09,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1722677858, now seen corresponding path program 1 times [2022-11-25 17:13:09,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:09,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10211549] [2022-11-25 17:13:09,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:09,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:09,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:13:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:09,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:13:09,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:09,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:13:09,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:09,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:13:09,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:09,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:13:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:10,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:13:10,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:10,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:13:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:10,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-25 17:13:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 17:13:10,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:10,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10211549] [2022-11-25 17:13:10,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10211549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:10,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:10,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 17:13:10,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78417609] [2022-11-25 17:13:10,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:10,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 17:13:10,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:10,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 17:13:10,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-25 17:13:10,086 INFO L87 Difference]: Start difference. First operand 827 states and 1318 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 17:13:24,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:24,318 INFO L93 Difference]: Finished difference Result 2877 states and 4767 transitions. [2022-11-25 17:13:24,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 17:13:24,319 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 81 [2022-11-25 17:13:24,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:24,332 INFO L225 Difference]: With dead ends: 2877 [2022-11-25 17:13:24,332 INFO L226 Difference]: Without dead ends: 2129 [2022-11-25 17:13:24,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-11-25 17:13:24,337 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 3581 mSDsluCounter, 1095 mSDsCounter, 0 mSdLazyCounter, 3811 mSolverCounterSat, 966 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3666 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 4777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 966 IncrementalHoareTripleChecker+Valid, 3811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:24,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3666 Valid, 1481 Invalid, 4777 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [966 Valid, 3811 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2022-11-25 17:13:24,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2022-11-25 17:13:24,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1584. [2022-11-25 17:13:24,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1584 states, 1252 states have (on average 1.626996805111821) internal successors, (2037), 1282 states have internal predecessors, (2037), 253 states have call successors, (253), 72 states have call predecessors, (253), 78 states have return successors, (273), 242 states have call predecessors, (273), 248 states have call successors, (273) [2022-11-25 17:13:24,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2563 transitions. [2022-11-25 17:13:24,910 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2563 transitions. Word has length 81 [2022-11-25 17:13:24,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:24,910 INFO L495 AbstractCegarLoop]: Abstraction has 1584 states and 2563 transitions. [2022-11-25 17:13:24,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 5 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 17:13:24,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2563 transitions. [2022-11-25 17:13:24,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-25 17:13:24,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:24,916 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:24,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-25 17:13:24,916 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:24,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:24,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1774520580, now seen corresponding path program 1 times [2022-11-25 17:13:24,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:24,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498758761] [2022-11-25 17:13:24,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:24,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:25,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:13:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:25,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:13:25,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:25,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:13:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:25,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:13:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:25,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:13:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:26,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:13:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:26,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:13:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:26,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:13:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-25 17:13:26,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:26,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:13:26,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:26,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 17:13:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:26,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-25 17:13:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:26,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 17:13:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:26,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-25 17:13:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:26,335 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:13:26,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:26,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498758761] [2022-11-25 17:13:26,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498758761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:26,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:26,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 17:13:26,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359990656] [2022-11-25 17:13:26,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:26,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:13:26,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:26,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:13:26,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:13:26,338 INFO L87 Difference]: Start difference. First operand 1584 states and 2563 transitions. Second operand has 12 states, 12 states have (on average 7.5) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-25 17:13:39,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:13:39,250 INFO L93 Difference]: Finished difference Result 3937 states and 6584 transitions. [2022-11-25 17:13:39,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 17:13:39,251 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (15), 6 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 121 [2022-11-25 17:13:39,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:13:39,266 INFO L225 Difference]: With dead ends: 3937 [2022-11-25 17:13:39,266 INFO L226 Difference]: Without dead ends: 2432 [2022-11-25 17:13:39,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2022-11-25 17:13:39,273 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 3827 mSDsluCounter, 1453 mSDsCounter, 0 mSdLazyCounter, 4129 mSolverCounterSat, 1793 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3827 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 5922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1793 IncrementalHoareTripleChecker+Valid, 4129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:13:39,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3827 Valid, 1806 Invalid, 5922 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1793 Valid, 4129 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-11-25 17:13:39,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2022-11-25 17:13:39,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 1594. [2022-11-25 17:13:39,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1260 states have (on average 1.623015873015873) internal successors, (2045), 1290 states have internal predecessors, (2045), 253 states have call successors, (253), 72 states have call predecessors, (253), 80 states have return successors, (275), 242 states have call predecessors, (275), 248 states have call successors, (275) [2022-11-25 17:13:39,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2573 transitions. [2022-11-25 17:13:39,848 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2573 transitions. Word has length 121 [2022-11-25 17:13:39,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:13:39,848 INFO L495 AbstractCegarLoop]: Abstraction has 1594 states and 2573 transitions. [2022-11-25 17:13:39,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.5) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-25 17:13:39,849 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2573 transitions. [2022-11-25 17:13:39,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-25 17:13:39,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:13:39,854 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:13:39,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-25 17:13:39,855 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:13:39,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:13:39,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1054983864, now seen corresponding path program 1 times [2022-11-25 17:13:39,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:13:39,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621616340] [2022-11-25 17:13:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:13:39,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:13:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:13:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:40,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:13:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:40,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:13:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:40,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:13:40,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:40,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:13:40,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:40,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:13:40,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:40,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:13:40,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:40,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:13:40,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:40,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:13:40,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:40,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 17:13:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:40,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-25 17:13:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:40,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-25 17:13:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:40,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-25 17:13:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:40,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 17:13:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:40,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-25 17:13:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:13:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:13:41,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:13:41,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621616340] [2022-11-25 17:13:41,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621616340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:13:41,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:13:41,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 17:13:41,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500501693] [2022-11-25 17:13:41,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:13:41,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:13:41,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:13:41,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:13:41,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:13:41,004 INFO L87 Difference]: Start difference. First operand 1594 states and 2573 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 17:14:01,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:01,192 INFO L93 Difference]: Finished difference Result 4785 states and 8095 transitions. [2022-11-25 17:14:01,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-25 17:14:01,193 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 124 [2022-11-25 17:14:01,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:01,213 INFO L225 Difference]: With dead ends: 4785 [2022-11-25 17:14:01,213 INFO L226 Difference]: Without dead ends: 3270 [2022-11-25 17:14:01,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=277, Invalid=1055, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 17:14:01,222 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 4274 mSDsluCounter, 3833 mSDsCounter, 0 mSdLazyCounter, 8930 mSolverCounterSat, 1355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4344 SdHoareTripleChecker+Valid, 4343 SdHoareTripleChecker+Invalid, 10285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1355 IncrementalHoareTripleChecker+Valid, 8930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:01,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4344 Valid, 4343 Invalid, 10285 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1355 Valid, 8930 Invalid, 0 Unknown, 0 Unchecked, 14.2s Time] [2022-11-25 17:14:01,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2022-11-25 17:14:02,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 2456. [2022-11-25 17:14:02,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 1932 states have (on average 1.610248447204969) internal successors, (3111), 1979 states have internal predecessors, (3111), 386 states have call successors, (386), 109 states have call predecessors, (386), 137 states have return successors, (514), 389 states have call predecessors, (514), 381 states have call successors, (514) [2022-11-25 17:14:02,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 4011 transitions. [2022-11-25 17:14:02,241 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 4011 transitions. Word has length 124 [2022-11-25 17:14:02,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:02,242 INFO L495 AbstractCegarLoop]: Abstraction has 2456 states and 4011 transitions. [2022-11-25 17:14:02,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 7 states have internal predecessors, (89), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 17:14:02,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 4011 transitions. [2022-11-25 17:14:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-25 17:14:02,249 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:02,250 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:02,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-25 17:14:02,250 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:02,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:02,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1378423338, now seen corresponding path program 1 times [2022-11-25 17:14:02,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:02,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340958984] [2022-11-25 17:14:02,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:02,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:02,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:14:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:02,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:14:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:02,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:14:02,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:02,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:14:02,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:02,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:14:02,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:14:03,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:03,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:14:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:03,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:14:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:03,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:14:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:03,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 17:14:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:03,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-25 17:14:03,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:03,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 17:14:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:03,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-25 17:14:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:03,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-25 17:14:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:03,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-25 17:14:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 17:14:03,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:03,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340958984] [2022-11-25 17:14:03,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340958984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:03,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:03,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 17:14:03,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402795940] [2022-11-25 17:14:03,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:03,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:14:03,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:03,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:14:03,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:14:03,472 INFO L87 Difference]: Start difference. First operand 2456 states and 4011 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 17:14:22,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:22,702 INFO L93 Difference]: Finished difference Result 7860 states and 13775 transitions. [2022-11-25 17:14:22,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-25 17:14:22,703 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2022-11-25 17:14:22,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:22,745 INFO L225 Difference]: With dead ends: 7860 [2022-11-25 17:14:22,746 INFO L226 Difference]: Without dead ends: 5484 [2022-11-25 17:14:22,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 17:14:22,764 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 4241 mSDsluCounter, 3573 mSDsCounter, 0 mSdLazyCounter, 7929 mSolverCounterSat, 1344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4320 SdHoareTripleChecker+Valid, 4130 SdHoareTripleChecker+Invalid, 9273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1344 IncrementalHoareTripleChecker+Valid, 7929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:22,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4320 Valid, 4130 Invalid, 9273 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1344 Valid, 7929 Invalid, 0 Unknown, 0 Unchecked, 13.0s Time] [2022-11-25 17:14:22,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5484 states. [2022-11-25 17:14:24,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5484 to 4168. [2022-11-25 17:14:24,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4168 states, 3274 states have (on average 1.6072083078802688) internal successors, (5262), 3344 states have internal predecessors, (5262), 657 states have call successors, (657), 183 states have call predecessors, (657), 236 states have return successors, (1050), 684 states have call predecessors, (1050), 652 states have call successors, (1050) [2022-11-25 17:14:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4168 states to 4168 states and 6969 transitions. [2022-11-25 17:14:24,604 INFO L78 Accepts]: Start accepts. Automaton has 4168 states and 6969 transitions. Word has length 126 [2022-11-25 17:14:24,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:24,604 INFO L495 AbstractCegarLoop]: Abstraction has 4168 states and 6969 transitions. [2022-11-25 17:14:24,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 6 states have internal predecessors, (91), 3 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-25 17:14:24,605 INFO L276 IsEmpty]: Start isEmpty. Operand 4168 states and 6969 transitions. [2022-11-25 17:14:24,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-25 17:14:24,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:24,611 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:24,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-25 17:14:24,611 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:24,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1578518171, now seen corresponding path program 1 times [2022-11-25 17:14:24,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:24,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265316764] [2022-11-25 17:14:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:24,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:24,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:14:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:24,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:14:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:24,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:14:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:25,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:14:25,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:25,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:14:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:25,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:14:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:25,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:14:25,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:25,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:14:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:25,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:14:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:25,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 17:14:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:25,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:14:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:25,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:14:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:25,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:14:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:25,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 17:14:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:25,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-25 17:14:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:25,795 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 17:14:25,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:25,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265316764] [2022-11-25 17:14:25,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265316764] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:14:25,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321230452] [2022-11-25 17:14:25,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:25,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:14:25,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:14:25,800 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:14:25,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 17:14:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:26,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 1716 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 17:14:26,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:14:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:14:26,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:14:26,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321230452] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:26,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:14:26,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2022-11-25 17:14:26,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240343738] [2022-11-25 17:14:26,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:26,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 17:14:26,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:26,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 17:14:26,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-25 17:14:26,557 INFO L87 Difference]: Start difference. First operand 4168 states and 6969 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-25 17:14:33,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:14:33,959 INFO L93 Difference]: Finished difference Result 12626 states and 22344 transitions. [2022-11-25 17:14:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 17:14:33,959 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 127 [2022-11-25 17:14:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:14:34,010 INFO L225 Difference]: With dead ends: 12626 [2022-11-25 17:14:34,010 INFO L226 Difference]: Without dead ends: 8536 [2022-11-25 17:14:34,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-25 17:14:34,043 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 2858 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 2854 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2993 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 3501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 17:14:34,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2993 Valid, 1621 Invalid, 3501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2854 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-25 17:14:34,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8536 states. [2022-11-25 17:14:37,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8536 to 8323. [2022-11-25 17:14:37,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8323 states, 6365 states have (on average 1.599057344854674) internal successors, (10178), 6558 states have internal predecessors, (10178), 1503 states have call successors, (1503), 331 states have call predecessors, (1503), 454 states have return successors, (2846), 1585 states have call predecessors, (2846), 1498 states have call successors, (2846) [2022-11-25 17:14:37,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8323 states to 8323 states and 14527 transitions. [2022-11-25 17:14:37,777 INFO L78 Accepts]: Start accepts. Automaton has 8323 states and 14527 transitions. Word has length 127 [2022-11-25 17:14:37,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:14:37,778 INFO L495 AbstractCegarLoop]: Abstraction has 8323 states and 14527 transitions. [2022-11-25 17:14:37,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 5 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-25 17:14:37,778 INFO L276 IsEmpty]: Start isEmpty. Operand 8323 states and 14527 transitions. [2022-11-25 17:14:37,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-25 17:14:37,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:14:37,787 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:14:37,801 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 17:14:38,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-25 17:14:38,001 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:14:38,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:14:38,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1363452713, now seen corresponding path program 1 times [2022-11-25 17:14:38,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:14:38,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021308461] [2022-11-25 17:14:38,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:14:38,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:14:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:38,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:14:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:38,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:14:38,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:38,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:14:38,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:38,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:14:38,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:38,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:14:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:38,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:14:38,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:39,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:14:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:39,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:14:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:39,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:14:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:39,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 17:14:39,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:39,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:14:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:39,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 17:14:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:39,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-25 17:14:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:39,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-25 17:14:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:14:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:14:39,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:14:39,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021308461] [2022-11-25 17:14:39,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021308461] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:14:39,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:14:39,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 17:14:39,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571563336] [2022-11-25 17:14:39,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:14:39,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 17:14:39,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:14:39,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 17:14:39,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-25 17:14:39,191 INFO L87 Difference]: Start difference. First operand 8323 states and 14527 transitions. Second operand has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-25 17:15:16,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:15:16,004 INFO L93 Difference]: Finished difference Result 29620 states and 60666 transitions. [2022-11-25 17:15:16,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-11-25 17:15:16,008 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 126 [2022-11-25 17:15:16,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:15:16,238 INFO L225 Difference]: With dead ends: 29620 [2022-11-25 17:15:16,238 INFO L226 Difference]: Without dead ends: 21383 [2022-11-25 17:15:16,324 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 771 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=543, Invalid=2109, Unknown=0, NotChecked=0, Total=2652 [2022-11-25 17:15:16,330 INFO L413 NwaCegarLoop]: 680 mSDtfsCounter, 6449 mSDsluCounter, 3968 mSDsCounter, 0 mSdLazyCounter, 10562 mSolverCounterSat, 2294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6491 SdHoareTripleChecker+Valid, 4648 SdHoareTripleChecker+Invalid, 12856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2294 IncrementalHoareTripleChecker+Valid, 10562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:15:16,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6491 Valid, 4648 Invalid, 12856 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2294 Valid, 10562 Invalid, 0 Unknown, 0 Unchecked, 16.8s Time] [2022-11-25 17:15:16,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21383 states. [2022-11-25 17:15:24,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21383 to 15961. [2022-11-25 17:15:24,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15961 states, 12211 states have (on average 1.5952829416100238) internal successors, (19480), 12582 states have internal predecessors, (19480), 2873 states have call successors, (2873), 627 states have call predecessors, (2873), 876 states have return successors, (6886), 3055 states have call predecessors, (6886), 2868 states have call successors, (6886) [2022-11-25 17:15:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15961 states to 15961 states and 29239 transitions. [2022-11-25 17:15:24,679 INFO L78 Accepts]: Start accepts. Automaton has 15961 states and 29239 transitions. Word has length 126 [2022-11-25 17:15:24,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:15:24,679 INFO L495 AbstractCegarLoop]: Abstraction has 15961 states and 29239 transitions. [2022-11-25 17:15:24,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.3076923076923075) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-25 17:15:24,680 INFO L276 IsEmpty]: Start isEmpty. Operand 15961 states and 29239 transitions. [2022-11-25 17:15:24,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-25 17:15:24,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:15:24,689 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:15:24,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-25 17:15:24,689 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:15:24,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:15:24,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1835465392, now seen corresponding path program 1 times [2022-11-25 17:15:24,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:15:24,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632474524] [2022-11-25 17:15:24,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:15:24,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:15:24,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:25,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:15:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:25,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:25,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:15:25,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:25,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:15:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:25,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:25,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:15:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:26,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:15:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:15:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:26,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:15:26,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:26,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 17:15:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:26,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 17:15:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:26,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-25 17:15:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:26,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-25 17:15:26,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:26,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-25 17:15:26,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:15:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:15:26,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:15:26,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632474524] [2022-11-25 17:15:26,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632474524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:15:26,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 17:15:26,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-25 17:15:26,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065722293] [2022-11-25 17:15:26,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:15:26,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 17:15:26,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:15:26,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 17:15:26,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-25 17:15:26,420 INFO L87 Difference]: Start difference. First operand 15961 states and 29239 transitions. Second operand has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-25 17:16:09,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 17:16:09,394 INFO L93 Difference]: Finished difference Result 57484 states and 119622 transitions. [2022-11-25 17:16:09,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-25 17:16:09,394 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 128 [2022-11-25 17:16:09,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 17:16:09,888 INFO L225 Difference]: With dead ends: 57484 [2022-11-25 17:16:09,888 INFO L226 Difference]: Without dead ends: 41617 [2022-11-25 17:16:10,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2022-11-25 17:16:10,063 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 3451 mSDsluCounter, 3119 mSDsCounter, 0 mSdLazyCounter, 8226 mSolverCounterSat, 1143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3528 SdHoareTripleChecker+Valid, 3602 SdHoareTripleChecker+Invalid, 9369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1143 IncrementalHoareTripleChecker+Valid, 8226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2022-11-25 17:16:10,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3528 Valid, 3602 Invalid, 9369 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1143 Valid, 8226 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2022-11-25 17:16:10,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41617 states. [2022-11-25 17:16:25,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41617 to 31965. [2022-11-25 17:16:25,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31965 states, 24536 states have (on average 1.5952885555917835) internal successors, (39142), 25223 states have internal predecessors, (39142), 5660 states have call successors, (5660), 1215 states have call predecessors, (5660), 1768 states have return successors, (14653), 6134 states have call predecessors, (14653), 5655 states have call successors, (14653) [2022-11-25 17:16:25,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31965 states to 31965 states and 59455 transitions. [2022-11-25 17:16:25,858 INFO L78 Accepts]: Start accepts. Automaton has 31965 states and 59455 transitions. Word has length 128 [2022-11-25 17:16:25,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 17:16:25,859 INFO L495 AbstractCegarLoop]: Abstraction has 31965 states and 59455 transitions. [2022-11-25 17:16:25,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.083333333333334) internal successors, (97), 6 states have internal predecessors, (97), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-25 17:16:25,859 INFO L276 IsEmpty]: Start isEmpty. Operand 31965 states and 59455 transitions. [2022-11-25 17:16:25,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-25 17:16:25,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 17:16:25,872 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 17:16:25,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-25 17:16:25,873 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 17:16:25,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 17:16:25,873 INFO L85 PathProgramCache]: Analyzing trace with hash -2016846430, now seen corresponding path program 1 times [2022-11-25 17:16:25,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 17:16:25,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566671495] [2022-11-25 17:16:25,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:25,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 17:16:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:26,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:16:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:26,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:16:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:26,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-25 17:16:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:26,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-25 17:16:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:26,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:16:26,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:26,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-25 17:16:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:26,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:16:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:26,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 17:16:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:26,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-25 17:16:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:26,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 17:16:27,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:27,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-25 17:16:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:27,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-25 17:16:27,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:27,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-25 17:16:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:27,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-25 17:16:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:27,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-25 17:16:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-25 17:16:27,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 17:16:27,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566671495] [2022-11-25 17:16:27,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566671495] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 17:16:27,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362472898] [2022-11-25 17:16:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 17:16:27,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 17:16:27,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 17:16:27,097 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 17:16:27,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_770a0ffc-77b0-4d03-84f3-d8682ee85a21/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 17:16:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 17:16:27,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 1735 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 17:16:27,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 17:16:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-25 17:16:27,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 17:16:27,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362472898] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 17:16:27,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 17:16:27,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 16 [2022-11-25 17:16:27,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143608075] [2022-11-25 17:16:27,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 17:16:27,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 17:16:27,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 17:16:27,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 17:16:27,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-25 17:16:27,512 INFO L87 Difference]: Start difference. First operand 31965 states and 59455 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15)