./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5c2801af81eeb5fcd439b1a1907444cd22ba07dc03ae6cb195ad73614e32dad5 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 16:18:03,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:18:03,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:18:03,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:18:03,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:18:03,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:18:03,589 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:18:03,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:18:03,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:18:03,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:18:03,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:18:03,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:18:03,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:18:03,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:18:03,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:18:03,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:18:03,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:18:03,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:18:03,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:18:03,618 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:18:03,619 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:18:03,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:18:03,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:18:03,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:18:03,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:18:03,640 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:18:03,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:18:03,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:18:03,642 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:18:03,643 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:18:03,643 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:18:03,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:18:03,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:18:03,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:18:03,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:18:03,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:18:03,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:18:03,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:18:03,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:18:03,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:18:03,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:18:03,654 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:18:03,706 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:18:03,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:18:03,707 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:18:03,707 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:18:03,708 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:18:03,708 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:18:03,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:18:03,709 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:18:03,709 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:18:03,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:18:03,710 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:18:03,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:18:03,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:18:03,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:18:03,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:18:03,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:18:03,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:18:03,711 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:18:03,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:18:03,712 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:18:03,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:18:03,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:18:03,712 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:18:03,712 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:18:03,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:18:03,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:18:03,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:18:03,713 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:18:03,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:18:03,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:18:03,714 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:18:03,714 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:18:03,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:18:03,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c2801af81eeb5fcd439b1a1907444cd22ba07dc03ae6cb195ad73614e32dad5 [2022-11-21 16:18:03,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:18:03,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:18:03,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:18:03,999 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:18:03,999 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:18:04,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2022-11-21 16:18:07,136 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:18:07,498 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:18:07,500 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c [2022-11-21 16:18:07,527 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/data/3cc799403/bbccd03e5e3a43b6910ddb84bc6fc8c6/FLAG89f295735 [2022-11-21 16:18:07,549 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/data/3cc799403/bbccd03e5e3a43b6910ddb84bc6fc8c6 [2022-11-21 16:18:07,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:18:07,556 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:18:07,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:18:07,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:18:07,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:18:07,561 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:18:07" (1/1) ... [2022-11-21 16:18:07,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@347b160f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:07, skipping insertion in model container [2022-11-21 16:18:07,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:18:07" (1/1) ... [2022-11-21 16:18:07,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:18:07,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:18:08,064 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_393b1046-e8c1-4d92-aef9-f474ae0212c7/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c[62420,62433] [2022-11-21 16:18:08,153 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:18:08,179 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:18:08,344 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_393b1046-e8c1-4d92-aef9-f474ae0212c7/sv-benchmarks/c/product-lines/elevator_spec3_product21.cil.c[62420,62433] [2022-11-21 16:18:08,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:18:08,414 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:18:08,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:08 WrapperNode [2022-11-21 16:18:08,414 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:18:08,415 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:18:08,415 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:18:08,416 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:18:08,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:08" (1/1) ... [2022-11-21 16:18:08,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:08" (1/1) ... [2022-11-21 16:18:08,513 INFO L138 Inliner]: procedures = 90, calls = 345, calls flagged for inlining = 24, calls inlined = 21, statements flattened = 884 [2022-11-21 16:18:08,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:18:08,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:18:08,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:18:08,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:18:08,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:08" (1/1) ... [2022-11-21 16:18:08,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:08" (1/1) ... [2022-11-21 16:18:08,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:08" (1/1) ... [2022-11-21 16:18:08,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:08" (1/1) ... [2022-11-21 16:18:08,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:08" (1/1) ... [2022-11-21 16:18:08,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:08" (1/1) ... [2022-11-21 16:18:08,610 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:08" (1/1) ... [2022-11-21 16:18:08,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:08" (1/1) ... [2022-11-21 16:18:08,635 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:18:08,636 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:18:08,636 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:18:08,636 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:18:08,637 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:08" (1/1) ... [2022-11-21 16:18:08,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:18:08,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:18:08,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:18:08,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:18:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:18:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-21 16:18:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-21 16:18:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-21 16:18:08,730 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-21 16:18:08,730 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-21 16:18:08,731 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-21 16:18:08,731 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-21 16:18:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-21 16:18:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-21 16:18:08,732 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-21 16:18:08,732 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-21 16:18:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-21 16:18:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-21 16:18:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-21 16:18:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-21 16:18:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-21 16:18:08,733 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-21 16:18:08,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-21 16:18:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-21 16:18:08,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-21 16:18:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-21 16:18:08,734 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-21 16:18:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-21 16:18:08,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-21 16:18:08,734 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-21 16:18:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-21 16:18:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-11-21 16:18:08,735 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-11-21 16:18:08,735 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-21 16:18:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-21 16:18:08,736 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-11-21 16:18:08,736 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-11-21 16:18:08,737 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-21 16:18:08,738 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-21 16:18:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-21 16:18:08,738 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-21 16:18:08,738 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-21 16:18:08,738 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-21 16:18:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-21 16:18:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-21 16:18:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:18:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-21 16:18:08,739 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-21 16:18:08,739 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-21 16:18:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-21 16:18:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-21 16:18:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-21 16:18:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-21 16:18:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-21 16:18:08,740 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-21 16:18:08,740 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-21 16:18:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:18:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:18:08,741 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-21 16:18:08,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-21 16:18:08,926 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:18:08,928 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:18:10,370 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:18:10,395 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:18:10,401 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-21 16:18:10,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:18:10 BoogieIcfgContainer [2022-11-21 16:18:10,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:18:10,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:18:10,409 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:18:10,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:18:10,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:18:07" (1/3) ... [2022-11-21 16:18:10,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138c9bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:18:10, skipping insertion in model container [2022-11-21 16:18:10,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:18:08" (2/3) ... [2022-11-21 16:18:10,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138c9bb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:18:10, skipping insertion in model container [2022-11-21 16:18:10,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:18:10" (3/3) ... [2022-11-21 16:18:10,418 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product21.cil.c [2022-11-21 16:18:10,437 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:18:10,437 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:18:10,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:18:10,538 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;@11d13579, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:18:10,539 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 16:18:10,550 INFO L276 IsEmpty]: Start isEmpty. Operand has 588 states, 454 states have (on average 1.6762114537444934) internal successors, (761), 472 states have internal predecessors, (761), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) [2022-11-21 16:18:10,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-21 16:18:10,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:18:10,583 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] [2022-11-21 16:18:10,583 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:18:10,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:10,589 INFO L85 PathProgramCache]: Analyzing trace with hash -803811748, now seen corresponding path program 1 times [2022-11-21 16:18:10,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:10,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199443561] [2022-11-21 16:18:10,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:10,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:11,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:18:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:11,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:18:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:11,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:18:11,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:11,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:18:11,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:11,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:18:11,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:11,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-21 16:18:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:11,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 16:18:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:11,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-21 16:18:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:11,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 16:18:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:11,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:18:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:11,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-21 16:18:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:11,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-21 16:18:11,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:11,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:18:11,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:11,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199443561] [2022-11-21 16:18:11,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199443561] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:18:11,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:18:11,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:18:11,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211308479] [2022-11-21 16:18:11,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:18:11,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:18:11,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:11,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:18:11,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:18:11,998 INFO L87 Difference]: Start difference. First operand has 588 states, 454 states have (on average 1.6762114537444934) internal successors, (761), 472 states have internal predecessors, (761), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:18:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:18:22,582 INFO L93 Difference]: Finished difference Result 1527 states and 2634 transitions. [2022-11-21 16:18:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:18:22,585 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2022-11-21 16:18:22,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:18:22,609 INFO L225 Difference]: With dead ends: 1527 [2022-11-21 16:18:22,610 INFO L226 Difference]: Without dead ends: 939 [2022-11-21 16:18:22,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:18:22,624 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 2331 mSDsluCounter, 2718 mSDsCounter, 0 mSdLazyCounter, 5837 mSolverCounterSat, 785 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2442 SdHoareTripleChecker+Valid, 3222 SdHoareTripleChecker+Invalid, 6622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 5837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:18:22,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2442 Valid, 3222 Invalid, 6622 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [785 Valid, 5837 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-21 16:18:22,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-11-21 16:18:22,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 591. [2022-11-21 16:18:22,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 457 states have (on average 1.6673960612691465) internal successors, (762), 475 states have internal predecessors, (762), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2022-11-21 16:18:22,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 975 transitions. [2022-11-21 16:18:22,963 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 975 transitions. Word has length 99 [2022-11-21 16:18:22,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:18:22,965 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 975 transitions. [2022-11-21 16:18:22,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:18:22,966 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 975 transitions. [2022-11-21 16:18:22,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-21 16:18:22,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:18:22,974 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] [2022-11-21 16:18:22,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:18:22,975 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:18:22,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:22,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1606711870, now seen corresponding path program 1 times [2022-11-21 16:18:22,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:22,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389267178] [2022-11-21 16:18:22,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:22,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:23,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:23,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:18:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:18:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:18:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:23,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:18:23,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:23,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:18:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:23,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 16:18:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:23,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 16:18:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:23,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 16:18:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 16:18:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:23,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:18:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:23,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 16:18:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:23,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 16:18:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:23,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:18:23,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:23,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389267178] [2022-11-21 16:18:23,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389267178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:18:23,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:18:23,709 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:18:23,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122370372] [2022-11-21 16:18:23,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:18:23,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:18:23,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:23,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:18:23,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:18:23,712 INFO L87 Difference]: Start difference. First operand 591 states and 975 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:18:34,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:18:34,167 INFO L93 Difference]: Finished difference Result 1517 states and 2580 transitions. [2022-11-21 16:18:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:18:34,168 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 100 [2022-11-21 16:18:34,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:18:34,176 INFO L225 Difference]: With dead ends: 1517 [2022-11-21 16:18:34,176 INFO L226 Difference]: Without dead ends: 942 [2022-11-21 16:18:34,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:18:34,182 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1685 mSDsluCounter, 2680 mSDsCounter, 0 mSdLazyCounter, 6060 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 3173 SdHoareTripleChecker+Invalid, 6619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 6060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:18:34,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 3173 Invalid, 6619 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [559 Valid, 6060 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-21 16:18:34,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2022-11-21 16:18:34,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 591. [2022-11-21 16:18:34,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 457 states have (on average 1.6652078774617067) internal successors, (761), 475 states have internal predecessors, (761), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2022-11-21 16:18:34,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 974 transitions. [2022-11-21 16:18:34,431 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 974 transitions. Word has length 100 [2022-11-21 16:18:34,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:18:34,432 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 974 transitions. [2022-11-21 16:18:34,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:18:34,432 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 974 transitions. [2022-11-21 16:18:34,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-21 16:18:34,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:18:34,436 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] [2022-11-21 16:18:34,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:18:34,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:18:34,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:34,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2010780664, now seen corresponding path program 1 times [2022-11-21 16:18:34,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:34,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788285335] [2022-11-21 16:18:34,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:34,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:34,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:18:34,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:34,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:18:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:34,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:18:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:34,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:18:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:34,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:18:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-21 16:18:34,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:34,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 16:18:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:34,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-21 16:18:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:34,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 16:18:35,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:35,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:18:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:35,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-21 16:18:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:35,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-21 16:18:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:35,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:18:35,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:35,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788285335] [2022-11-21 16:18:35,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788285335] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:18:35,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:18:35,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:18:35,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799170392] [2022-11-21 16:18:35,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:18:35,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:18:35,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:35,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:18:35,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:18:35,058 INFO L87 Difference]: Start difference. First operand 591 states and 974 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-21 16:18:42,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:18:42,821 INFO L93 Difference]: Finished difference Result 1508 states and 2560 transitions. [2022-11-21 16:18:42,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:18:42,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2022-11-21 16:18:42,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:18:42,831 INFO L225 Difference]: With dead ends: 1508 [2022-11-21 16:18:42,832 INFO L226 Difference]: Without dead ends: 902 [2022-11-21 16:18:42,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:18:42,845 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 2195 mSDsluCounter, 1192 mSDsCounter, 0 mSdLazyCounter, 3084 mSolverCounterSat, 778 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2306 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 3862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 778 IncrementalHoareTripleChecker+Valid, 3084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:18:42,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2306 Valid, 1682 Invalid, 3862 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [778 Valid, 3084 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-21 16:18:42,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2022-11-21 16:18:43,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 567. [2022-11-21 16:18:43,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 436 states have (on average 1.6559633027522935) internal successors, (722), 452 states have internal predecessors, (722), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-21 16:18:43,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 931 transitions. [2022-11-21 16:18:43,005 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 931 transitions. Word has length 100 [2022-11-21 16:18:43,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:18:43,006 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 931 transitions. [2022-11-21 16:18:43,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-21 16:18:43,006 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 931 transitions. [2022-11-21 16:18:43,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-21 16:18:43,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:18:43,010 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] [2022-11-21 16:18:43,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:18:43,010 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:18:43,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:43,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1736673176, now seen corresponding path program 1 times [2022-11-21 16:18:43,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:43,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817315875] [2022-11-21 16:18:43,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:43,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:43,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:18:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:43,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:18:43,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:43,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:18:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:43,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:18:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:43,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:18:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:43,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 16:18:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:43,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 16:18:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:43,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 16:18:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:43,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-21 16:18:43,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:43,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:18:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:43,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 16:18:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:43,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-21 16:18:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:18:43,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:43,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817315875] [2022-11-21 16:18:43,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817315875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:18:43,697 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:18:43,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:18:43,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694202078] [2022-11-21 16:18:43,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:18:43,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:18:43,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:43,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:18:43,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:18:43,699 INFO L87 Difference]: Start difference. First operand 567 states and 931 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:18:52,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:18:52,768 INFO L93 Difference]: Finished difference Result 1471 states and 2491 transitions. [2022-11-21 16:18:52,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:18:52,769 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2022-11-21 16:18:52,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:18:52,775 INFO L225 Difference]: With dead ends: 1471 [2022-11-21 16:18:52,776 INFO L226 Difference]: Without dead ends: 896 [2022-11-21 16:18:52,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:18:52,781 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1680 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 5696 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1791 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 6249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 5696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:18:52,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1791 Valid, 3197 Invalid, 6249 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [553 Valid, 5696 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-21 16:18:52,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2022-11-21 16:18:52,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 561. [2022-11-21 16:18:52,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 430 states have (on average 1.6488372093023256) internal successors, (709), 446 states have internal predecessors, (709), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-21 16:18:52,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 918 transitions. [2022-11-21 16:18:52,965 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 918 transitions. Word has length 101 [2022-11-21 16:18:52,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:18:52,965 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 918 transitions. [2022-11-21 16:18:52,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:18:52,966 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 918 transitions. [2022-11-21 16:18:52,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-21 16:18:52,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:18:52,969 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:18:52,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:18:52,969 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:18:52,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:18:52,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1439435094, now seen corresponding path program 1 times [2022-11-21 16:18:52,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:18:52,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635571823] [2022-11-21 16:18:52,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:18:52,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:18:53,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:53,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:18:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:53,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:18:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:53,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:18:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:53,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:18:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:53,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:18:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:53,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 16:18:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:53,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 16:18:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:53,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-21 16:18:53,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:53,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-21 16:18:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:53,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:18:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:53,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 16:18:53,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:53,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-21 16:18:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:18:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:18:53,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:18:53,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635571823] [2022-11-21 16:18:53,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635571823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:18:53,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:18:53,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:18:53,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897268478] [2022-11-21 16:18:53,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:18:53,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:18:53,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:53,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:18:53,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:18:53,599 INFO L87 Difference]: Start difference. First operand 561 states and 918 transitions. Second operand has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:19:02,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:02,502 INFO L93 Difference]: Finished difference Result 1441 states and 2440 transitions. [2022-11-21 16:19:02,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:19:02,502 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 102 [2022-11-21 16:19:02,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:02,508 INFO L225 Difference]: With dead ends: 1441 [2022-11-21 16:19:02,509 INFO L226 Difference]: Without dead ends: 896 [2022-11-21 16:19:02,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:19:02,513 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 2124 mSDsluCounter, 2652 mSDsCounter, 0 mSdLazyCounter, 5532 mSolverCounterSat, 768 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2234 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 6300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 768 IncrementalHoareTripleChecker+Valid, 5532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:02,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2234 Valid, 3146 Invalid, 6300 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [768 Valid, 5532 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-21 16:19:02,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2022-11-21 16:19:02,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 561. [2022-11-21 16:19:02,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 430 states have (on average 1.6465116279069767) internal successors, (708), 446 states have internal predecessors, (708), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-21 16:19:02,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 917 transitions. [2022-11-21 16:19:02,680 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 917 transitions. Word has length 102 [2022-11-21 16:19:02,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:02,680 INFO L495 AbstractCegarLoop]: Abstraction has 561 states and 917 transitions. [2022-11-21 16:19:02,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:19:02,681 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 917 transitions. [2022-11-21 16:19:02,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-21 16:19:02,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:02,684 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] [2022-11-21 16:19:02,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:19:02,684 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:02,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:02,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1030530245, now seen corresponding path program 1 times [2022-11-21 16:19:02,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:02,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959642082] [2022-11-21 16:19:02,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:02,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:19:03,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:03,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:19:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:03,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:03,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:19:03,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:03,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 16:19:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:03,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-21 16:19:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:03,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-21 16:19:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:03,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-21 16:19:03,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:03,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:19:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:03,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 16:19:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:03,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 16:19:03,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:03,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:19:03,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:03,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959642082] [2022-11-21 16:19:03,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959642082] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:03,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:03,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:19:03,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214240476] [2022-11-21 16:19:03,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:03,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:19:03,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:03,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:19:03,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:19:03,283 INFO L87 Difference]: Start difference. First operand 561 states and 917 transitions. Second operand has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:19:12,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:12,678 INFO L93 Difference]: Finished difference Result 1459 states and 2460 transitions. [2022-11-21 16:19:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:19:12,678 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-11-21 16:19:12,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:12,684 INFO L225 Difference]: With dead ends: 1459 [2022-11-21 16:19:12,684 INFO L226 Difference]: Without dead ends: 890 [2022-11-21 16:19:12,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:19:12,688 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 1108 mSDsluCounter, 2743 mSDsCounter, 0 mSdLazyCounter, 5770 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 3237 SdHoareTripleChecker+Invalid, 6103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 5770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:12,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1219 Valid, 3237 Invalid, 6103 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [333 Valid, 5770 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-11-21 16:19:12,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-11-21 16:19:12,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 555. [2022-11-21 16:19:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 424 states have (on average 1.6391509433962264) internal successors, (695), 440 states have internal predecessors, (695), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-21 16:19:12,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 904 transitions. [2022-11-21 16:19:12,864 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 904 transitions. Word has length 103 [2022-11-21 16:19:12,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:12,865 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 904 transitions. [2022-11-21 16:19:12,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:19:12,865 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 904 transitions. [2022-11-21 16:19:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-21 16:19:12,868 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:12,869 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] [2022-11-21 16:19:12,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 16:19:12,869 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:12,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:12,870 INFO L85 PathProgramCache]: Analyzing trace with hash -610304852, now seen corresponding path program 1 times [2022-11-21 16:19:12,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:12,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038550747] [2022-11-21 16:19:12,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:12,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:13,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:19:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:13,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:13,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:19:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:13,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:13,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:19:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:13,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 16:19:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:13,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 16:19:13,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:13,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-21 16:19:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:13,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-21 16:19:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:13,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:19:13,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:13,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 16:19:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:13,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 16:19:13,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:13,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:19:13,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:13,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038550747] [2022-11-21 16:19:13,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038550747] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:13,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:13,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:19:13,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378837881] [2022-11-21 16:19:13,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:13,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:19:13,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:13,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:19:13,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:19:13,436 INFO L87 Difference]: Start difference. First operand 555 states and 904 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:19:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:22,582 INFO L93 Difference]: Finished difference Result 1429 states and 2411 transitions. [2022-11-21 16:19:22,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:19:22,583 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2022-11-21 16:19:22,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:22,588 INFO L225 Difference]: With dead ends: 1429 [2022-11-21 16:19:22,589 INFO L226 Difference]: Without dead ends: 890 [2022-11-21 16:19:22,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:19:22,592 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1049 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 5596 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1160 SdHoareTripleChecker+Valid, 3254 SdHoareTripleChecker+Invalid, 5929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 5596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:22,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1160 Valid, 3254 Invalid, 5929 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [333 Valid, 5596 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-11-21 16:19:22,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-11-21 16:19:22,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 555. [2022-11-21 16:19:22,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 424 states have (on average 1.6367924528301887) internal successors, (694), 440 states have internal predecessors, (694), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-21 16:19:22,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 903 transitions. [2022-11-21 16:19:22,747 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 903 transitions. Word has length 104 [2022-11-21 16:19:22,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:22,748 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 903 transitions. [2022-11-21 16:19:22,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:19:22,748 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 903 transitions. [2022-11-21 16:19:22,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-21 16:19:22,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:22,751 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] [2022-11-21 16:19:22,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 16:19:22,752 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:22,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:22,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1454612664, now seen corresponding path program 1 times [2022-11-21 16:19:22,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:22,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129308186] [2022-11-21 16:19:22,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:22,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:23,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:19:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:23,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:23,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:19:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:23,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:23,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:19:23,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:23,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 16:19:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:23,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 16:19:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:23,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 16:19:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:23,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 16:19:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:23,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:19:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:23,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-21 16:19:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:23,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 16:19:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:23,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:19:23,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:23,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129308186] [2022-11-21 16:19:23,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129308186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:23,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:23,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:19:23,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046118056] [2022-11-21 16:19:23,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:23,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:19:23,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:23,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:19:23,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:19:23,320 INFO L87 Difference]: Start difference. First operand 555 states and 903 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:19:32,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:32,364 INFO L93 Difference]: Finished difference Result 1450 states and 2433 transitions. [2022-11-21 16:19:32,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 16:19:32,364 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2022-11-21 16:19:32,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:32,369 INFO L225 Difference]: With dead ends: 1450 [2022-11-21 16:19:32,369 INFO L226 Difference]: Without dead ends: 911 [2022-11-21 16:19:32,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:19:32,371 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 2104 mSDsluCounter, 2641 mSDsCounter, 0 mSdLazyCounter, 5460 mSolverCounterSat, 773 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2215 SdHoareTripleChecker+Valid, 3133 SdHoareTripleChecker+Invalid, 6233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 773 IncrementalHoareTripleChecker+Valid, 5460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:32,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2215 Valid, 3133 Invalid, 6233 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [773 Valid, 5460 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-21 16:19:32,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2022-11-21 16:19:32,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 560. [2022-11-21 16:19:32,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 429 states have (on average 1.6293706293706294) internal successors, (699), 445 states have internal predecessors, (699), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-21 16:19:32,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 908 transitions. [2022-11-21 16:19:32,573 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 908 transitions. Word has length 105 [2022-11-21 16:19:32,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:32,574 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 908 transitions. [2022-11-21 16:19:32,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:19:32,574 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 908 transitions. [2022-11-21 16:19:32,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-21 16:19:32,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:32,578 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] [2022-11-21 16:19:32,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 16:19:32,578 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:32,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:32,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2068554199, now seen corresponding path program 1 times [2022-11-21 16:19:32,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:32,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795632870] [2022-11-21 16:19:32,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:32,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:32,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:19:32,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:32,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:33,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:19:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:33,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:33,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:33,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:19:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:33,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-21 16:19:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:33,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 16:19:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:33,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-21 16:19:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:33,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-21 16:19:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:33,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:19:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:33,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-21 16:19:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:33,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 16:19:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:19:33,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:33,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795632870] [2022-11-21 16:19:33,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795632870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:33,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:33,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:19:33,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797710457] [2022-11-21 16:19:33,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:33,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:19:33,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:33,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:19:33,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:19:33,144 INFO L87 Difference]: Start difference. First operand 560 states and 908 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:19:42,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:42,092 INFO L93 Difference]: Finished difference Result 1452 states and 2432 transitions. [2022-11-21 16:19:42,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:19:42,093 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2022-11-21 16:19:42,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:42,099 INFO L225 Difference]: With dead ends: 1452 [2022-11-21 16:19:42,099 INFO L226 Difference]: Without dead ends: 884 [2022-11-21 16:19:42,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:19:42,102 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 2156 mSDsluCounter, 2521 mSDsCounter, 0 mSdLazyCounter, 5429 mSolverCounterSat, 781 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2266 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 6210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 781 IncrementalHoareTripleChecker+Valid, 5429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:42,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2266 Valid, 2990 Invalid, 6210 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [781 Valid, 5429 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-21 16:19:42,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-11-21 16:19:42,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 549. [2022-11-21 16:19:42,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 418 states have (on average 1.6267942583732058) internal successors, (680), 434 states have internal predecessors, (680), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-21 16:19:42,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 889 transitions. [2022-11-21 16:19:42,317 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 889 transitions. Word has length 105 [2022-11-21 16:19:42,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:42,317 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 889 transitions. [2022-11-21 16:19:42,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:19:42,317 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 889 transitions. [2022-11-21 16:19:42,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-21 16:19:42,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:42,321 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] [2022-11-21 16:19:42,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 16:19:42,321 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:42,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:42,322 INFO L85 PathProgramCache]: Analyzing trace with hash 18239601, now seen corresponding path program 1 times [2022-11-21 16:19:42,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:42,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664668611] [2022-11-21 16:19:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:42,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:42,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:19:42,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:42,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:42,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:19:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:42,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:42,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:19:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:42,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 16:19:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:42,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 16:19:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:42,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 16:19:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:42,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 16:19:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:42,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:19:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:42,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-21 16:19:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:42,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 16:19:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:19:42,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:42,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664668611] [2022-11-21 16:19:42,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664668611] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:42,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:42,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:19:42,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364378314] [2022-11-21 16:19:42,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:42,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:19:42,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:42,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:19:42,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:19:42,898 INFO L87 Difference]: Start difference. First operand 549 states and 889 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:19:51,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:19:51,739 INFO L93 Difference]: Finished difference Result 1429 states and 2392 transitions. [2022-11-21 16:19:51,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 16:19:51,739 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2022-11-21 16:19:51,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:19:51,743 INFO L225 Difference]: With dead ends: 1429 [2022-11-21 16:19:51,744 INFO L226 Difference]: Without dead ends: 896 [2022-11-21 16:19:51,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:19:51,746 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 1534 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 5378 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1645 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 5938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 5378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-21 16:19:51,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1645 Valid, 3214 Invalid, 5938 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [560 Valid, 5378 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-21 16:19:51,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 896 states. [2022-11-21 16:19:51,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 555. [2022-11-21 16:19:51,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 424 states have (on average 1.6179245283018868) internal successors, (686), 440 states have internal predecessors, (686), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-21 16:19:51,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 895 transitions. [2022-11-21 16:19:51,966 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 895 transitions. Word has length 106 [2022-11-21 16:19:51,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:19:51,967 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 895 transitions. [2022-11-21 16:19:51,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:19:51,967 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 895 transitions. [2022-11-21 16:19:51,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-21 16:19:51,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:19:51,971 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] [2022-11-21 16:19:51,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 16:19:51,971 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:19:51,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:51,972 INFO L85 PathProgramCache]: Analyzing trace with hash -949111053, now seen corresponding path program 1 times [2022-11-21 16:19:51,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:51,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220789427] [2022-11-21 16:19:51,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:51,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:51,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:52,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:19:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:52,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:52,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:19:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:19:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:52,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:19:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:52,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-21 16:19:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:52,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 16:19:52,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:52,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-21 16:19:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:52,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-21 16:19:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:52,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:19:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:52,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-21 16:19:52,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:52,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-21 16:19:52,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:52,488 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:19:52,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:52,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220789427] [2022-11-21 16:19:52,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220789427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:19:52,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:19:52,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:19:52,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774192739] [2022-11-21 16:19:52,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:19:52,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:19:52,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:19:52,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:19:52,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:19:52,491 INFO L87 Difference]: Start difference. First operand 555 states and 895 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:20:01,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:20:01,668 INFO L93 Difference]: Finished difference Result 1432 states and 2393 transitions. [2022-11-21 16:20:01,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-21 16:20:01,669 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2022-11-21 16:20:01,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:20:01,675 INFO L225 Difference]: With dead ends: 1432 [2022-11-21 16:20:01,675 INFO L226 Difference]: Without dead ends: 884 [2022-11-21 16:20:01,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:20:01,679 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1025 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 5519 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1135 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 5854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 5519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-21 16:20:01,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1135 Valid, 3134 Invalid, 5854 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [335 Valid, 5519 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-21 16:20:01,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-11-21 16:20:01,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 549. [2022-11-21 16:20:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 418 states have (on average 1.624401913875598) internal successors, (679), 434 states have internal predecessors, (679), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-21 16:20:01,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 888 transitions. [2022-11-21 16:20:01,873 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 888 transitions. Word has length 106 [2022-11-21 16:20:01,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:20:01,874 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 888 transitions. [2022-11-21 16:20:01,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-21 16:20:01,874 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 888 transitions. [2022-11-21 16:20:01,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-21 16:20:01,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:20:01,877 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] [2022-11-21 16:20:01,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 16:20:01,878 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:20:01,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:01,878 INFO L85 PathProgramCache]: Analyzing trace with hash 265194798, now seen corresponding path program 1 times [2022-11-21 16:20:01,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:01,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145256047] [2022-11-21 16:20:01,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:01,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:02,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:20:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:02,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:20:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:02,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:20:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:02,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:20:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:02,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:20:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:02,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 16:20:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:02,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 16:20:02,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:02,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 16:20:02,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:02,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:20:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:02,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:20:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:02,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-21 16:20:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:02,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 16:20:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:02,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:20:02,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:02,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145256047] [2022-11-21 16:20:02,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145256047] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:02,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:20:02,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:20:02,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607284696] [2022-11-21 16:20:02,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:02,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:20:02,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:02,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:20:02,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:20:02,454 INFO L87 Difference]: Start difference. First operand 549 states and 888 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-21 16:20:18,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:20:18,390 INFO L93 Difference]: Finished difference Result 2160 states and 3663 transitions. [2022-11-21 16:20:18,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 16:20:18,391 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 107 [2022-11-21 16:20:18,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:20:18,407 INFO L225 Difference]: With dead ends: 2160 [2022-11-21 16:20:18,407 INFO L226 Difference]: Without dead ends: 1629 [2022-11-21 16:20:18,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-11-21 16:20:18,437 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 2543 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 6320 mSolverCounterSat, 1198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2656 SdHoareTripleChecker+Valid, 2819 SdHoareTripleChecker+Invalid, 7518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1198 IncrementalHoareTripleChecker+Valid, 6320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:20:18,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2656 Valid, 2819 Invalid, 7518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1198 Valid, 6320 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-11-21 16:20:18,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-11-21 16:20:18,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1029. [2022-11-21 16:20:18,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 786 states have (on average 1.5877862595419847) internal successors, (1248), 816 states have internal predecessors, (1248), 196 states have call successors, (196), 49 states have call predecessors, (196), 46 states have return successors, (197), 188 states have call predecessors, (197), 192 states have call successors, (197) [2022-11-21 16:20:18,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1641 transitions. [2022-11-21 16:20:18,967 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1641 transitions. Word has length 107 [2022-11-21 16:20:18,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:20:18,968 INFO L495 AbstractCegarLoop]: Abstraction has 1029 states and 1641 transitions. [2022-11-21 16:20:18,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-21 16:20:18,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1641 transitions. [2022-11-21 16:20:18,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-21 16:20:18,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:20:18,971 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] [2022-11-21 16:20:18,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 16:20:18,972 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:20:18,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:18,972 INFO L85 PathProgramCache]: Analyzing trace with hash 143661809, now seen corresponding path program 1 times [2022-11-21 16:20:18,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:18,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844258672] [2022-11-21 16:20:18,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:18,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:20:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:20:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:19,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:20:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:19,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:20:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:19,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:20:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:19,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 16:20:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:19,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 16:20:19,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:19,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 16:20:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:19,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:20:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:19,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:20:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:19,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:20:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:19,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 16:20:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-21 16:20:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:20:19,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:19,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844258672] [2022-11-21 16:20:19,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844258672] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:19,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2084338054] [2022-11-21 16:20:19,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:19,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:19,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:19,574 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:19,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:20:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:19,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:20:19,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:20,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:20,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:20:20,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2084338054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:20,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:20:20,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-21 16:20:20,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183784501] [2022-11-21 16:20:20,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:20,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:20:20,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:20,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:20:20,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:20:20,115 INFO L87 Difference]: Start difference. First operand 1029 states and 1641 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-21 16:20:21,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:20:21,178 INFO L93 Difference]: Finished difference Result 2959 states and 4785 transitions. [2022-11-21 16:20:21,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:20:21,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2022-11-21 16:20:21,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:20:21,189 INFO L225 Difference]: With dead ends: 2959 [2022-11-21 16:20:21,189 INFO L226 Difference]: Without dead ends: 1948 [2022-11-21 16:20:21,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:20:21,195 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 815 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:20:21,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1813 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:20:21,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2022-11-21 16:20:22,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1887. [2022-11-21 16:20:22,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1887 states, 1450 states have (on average 1.6055172413793104) internal successors, (2328), 1510 states have internal predecessors, (2328), 349 states have call successors, (349), 88 states have call predecessors, (349), 87 states have return successors, (364), 338 states have call predecessors, (364), 345 states have call successors, (364) [2022-11-21 16:20:22,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 3041 transitions. [2022-11-21 16:20:22,107 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 3041 transitions. Word has length 112 [2022-11-21 16:20:22,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:20:22,108 INFO L495 AbstractCegarLoop]: Abstraction has 1887 states and 3041 transitions. [2022-11-21 16:20:22,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-21 16:20:22,108 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 3041 transitions. [2022-11-21 16:20:22,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-21 16:20:22,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:20:22,112 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] [2022-11-21 16:20:22,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:22,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 16:20:22,322 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:20:22,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:22,322 INFO L85 PathProgramCache]: Analyzing trace with hash -596198869, now seen corresponding path program 1 times [2022-11-21 16:20:22,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:22,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028619646] [2022-11-21 16:20:22,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:22,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:22,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:20:22,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:22,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:20:22,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:22,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:20:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:22,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:20:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:22,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:20:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:22,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 16:20:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:22,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 16:20:22,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:22,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-21 16:20:22,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:22,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:20:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:22,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 16:20:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:22,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:20:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:22,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-21 16:20:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:22,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 16:20:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:20:22,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:22,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028619646] [2022-11-21 16:20:22,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028619646] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:20:22,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976921277] [2022-11-21 16:20:22,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:22,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:20:22,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:20:22,933 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:20:22,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:20:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:23,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 16:20:23,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:20:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:20:23,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 16:20:23,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976921277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:23,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 16:20:23,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-11-21 16:20:23,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924378711] [2022-11-21 16:20:23,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:23,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 16:20:23,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:23,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 16:20:23,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:20:23,469 INFO L87 Difference]: Start difference. First operand 1887 states and 3041 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-21 16:20:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:20:24,429 INFO L93 Difference]: Finished difference Result 4227 states and 6851 transitions. [2022-11-21 16:20:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 16:20:24,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-11-21 16:20:24,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:20:24,444 INFO L225 Difference]: With dead ends: 4227 [2022-11-21 16:20:24,444 INFO L226 Difference]: Without dead ends: 2358 [2022-11-21 16:20:24,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:20:24,454 INFO L413 NwaCegarLoop]: 971 mSDtfsCounter, 813 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1752 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 16:20:24,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1752 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 16:20:24,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2022-11-21 16:20:25,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2311. [2022-11-21 16:20:25,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2311 states, 1779 states have (on average 1.6172006745362564) internal successors, (2877), 1854 states have internal predecessors, (2877), 425 states have call successors, (425), 106 states have call predecessors, (425), 106 states have return successors, (444), 413 states have call predecessors, (444), 421 states have call successors, (444) [2022-11-21 16:20:25,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 3746 transitions. [2022-11-21 16:20:25,321 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 3746 transitions. Word has length 113 [2022-11-21 16:20:25,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:20:25,321 INFO L495 AbstractCegarLoop]: Abstraction has 2311 states and 3746 transitions. [2022-11-21 16:20:25,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-21 16:20:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 3746 transitions. [2022-11-21 16:20:25,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-21 16:20:25,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:20:25,327 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] [2022-11-21 16:20:25,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:20:25,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_393b1046-e8c1-4d92-aef9-f474ae0212c7/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-21 16:20:25,535 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:20:25,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:20:25,536 INFO L85 PathProgramCache]: Analyzing trace with hash 426526902, now seen corresponding path program 1 times [2022-11-21 16:20:25,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:20:25,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752365660] [2022-11-21 16:20:25,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:20:25,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:20:25,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:20:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:25,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:20:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:25,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:20:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:26,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:20:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:26,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:20:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 16:20:26,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:26,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 16:20:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:26,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 16:20:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:26,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 16:20:26,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:26,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-21 16:20:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:26,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-21 16:20:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:26,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:20:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:26,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-21 16:20:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:26,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-21 16:20:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:20:26,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:20:26,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:20:26,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752365660] [2022-11-21 16:20:26,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752365660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:20:26,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:20:26,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:20:26,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454451774] [2022-11-21 16:20:26,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:20:26,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:20:26,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:20:26,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:20:26,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:20:26,067 INFO L87 Difference]: Start difference. First operand 2311 states and 3746 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-21 16:20:57,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:20:57,780 INFO L93 Difference]: Finished difference Result 11585 states and 21020 transitions. [2022-11-21 16:20:57,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 16:20:57,781 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2022-11-21 16:20:57,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:20:57,864 INFO L225 Difference]: With dead ends: 11585 [2022-11-21 16:20:57,864 INFO L226 Difference]: Without dead ends: 9292 [2022-11-21 16:20:57,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-21 16:20:57,885 INFO L413 NwaCegarLoop]: 806 mSDtfsCounter, 2914 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 9078 mSolverCounterSat, 1987 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3032 SdHoareTripleChecker+Valid, 3990 SdHoareTripleChecker+Invalid, 11065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1987 IncrementalHoareTripleChecker+Valid, 9078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2022-11-21 16:20:57,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3032 Valid, 3990 Invalid, 11065 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1987 Valid, 9078 Invalid, 0 Unknown, 0 Unchecked, 22.2s Time] [2022-11-21 16:20:57,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9292 states. [2022-11-21 16:21:00,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9292 to 5551. [2022-11-21 16:21:00,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5551 states, 4015 states have (on average 1.5825653798256538) internal successors, (6354), 4320 states have internal predecessors, (6354), 1266 states have call successors, (1266), 206 states have call predecessors, (1266), 269 states have return successors, (2000), 1260 states have call predecessors, (2000), 1260 states have call successors, (2000) [2022-11-21 16:21:00,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5551 states to 5551 states and 9620 transitions. [2022-11-21 16:21:00,932 INFO L78 Accepts]: Start accepts. Automaton has 5551 states and 9620 transitions. Word has length 116 [2022-11-21 16:21:00,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:21:00,932 INFO L495 AbstractCegarLoop]: Abstraction has 5551 states and 9620 transitions. [2022-11-21 16:21:00,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-21 16:21:00,933 INFO L276 IsEmpty]: Start isEmpty. Operand 5551 states and 9620 transitions. [2022-11-21 16:21:00,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-21 16:21:00,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:21:00,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:21:00,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 16:21:00,936 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:21:00,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:00,937 INFO L85 PathProgramCache]: Analyzing trace with hash 2137028789, now seen corresponding path program 1 times [2022-11-21 16:21:00,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:00,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579904184] [2022-11-21 16:21:00,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:00,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:01,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:21:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:01,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:21:01,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:01,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:21:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:01,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:21:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:01,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:21:01,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:01,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 16:21:01,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:01,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 16:21:01,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:01,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 16:21:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:01,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-21 16:21:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:01,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-21 16:21:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:01,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 16:21:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:01,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:21:01,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:01,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-21 16:21:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:01,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 16:21:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 16:21:01,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:01,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579904184] [2022-11-21 16:21:01,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579904184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:01,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:01,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:21:01,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731589781] [2022-11-21 16:21:01,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:01,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:21:01,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:01,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:21:01,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:21:01,347 INFO L87 Difference]: Start difference. First operand 5551 states and 9620 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-21 16:21:12,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:21:12,807 INFO L93 Difference]: Finished difference Result 12543 states and 22225 transitions. [2022-11-21 16:21:12,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:21:12,808 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2022-11-21 16:21:12,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:21:12,859 INFO L225 Difference]: With dead ends: 12543 [2022-11-21 16:21:12,860 INFO L226 Difference]: Without dead ends: 7010 [2022-11-21 16:21:12,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:21:12,904 INFO L413 NwaCegarLoop]: 522 mSDtfsCounter, 978 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1089 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 3419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-21 16:21:12,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1089 Valid, 1858 Invalid, 3419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-21 16:21:12,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7010 states. [2022-11-21 16:21:15,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7010 to 5559. [2022-11-21 16:21:15,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5559 states, 4021 states have (on average 1.5811987067893558) internal successors, (6358), 4326 states have internal predecessors, (6358), 1266 states have call successors, (1266), 210 states have call predecessors, (1266), 271 states have return successors, (1990), 1258 states have call predecessors, (1990), 1260 states have call successors, (1990) [2022-11-21 16:21:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5559 states to 5559 states and 9614 transitions. [2022-11-21 16:21:15,962 INFO L78 Accepts]: Start accepts. Automaton has 5559 states and 9614 transitions. Word has length 118 [2022-11-21 16:21:15,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:21:15,963 INFO L495 AbstractCegarLoop]: Abstraction has 5559 states and 9614 transitions. [2022-11-21 16:21:15,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-21 16:21:15,963 INFO L276 IsEmpty]: Start isEmpty. Operand 5559 states and 9614 transitions. [2022-11-21 16:21:15,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-21 16:21:15,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:21:15,970 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] [2022-11-21 16:21:15,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 16:21:15,970 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:21:15,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:21:15,971 INFO L85 PathProgramCache]: Analyzing trace with hash 933674371, now seen corresponding path program 1 times [2022-11-21 16:21:15,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:21:15,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813631433] [2022-11-21 16:21:15,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:21:15,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:21:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:21:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:21:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:21:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:21:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:21:16,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 16:21:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 16:21:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 16:21:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 16:21:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-21 16:21:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 16:21:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 16:21:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:21:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 16:21:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-21 16:21:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:21:16,590 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 16:21:16,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:21:16,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813631433] [2022-11-21 16:21:16,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813631433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:21:16,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:21:16,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:21:16,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496030975] [2022-11-21 16:21:16,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:21:16,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:21:16,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:21:16,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:21:16,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:21:16,595 INFO L87 Difference]: Start difference. First operand 5559 states and 9614 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-21 16:21:53,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:21:53,994 INFO L93 Difference]: Finished difference Result 24090 states and 45704 transitions. [2022-11-21 16:21:53,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 16:21:53,995 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2022-11-21 16:21:53,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:21:54,163 INFO L225 Difference]: With dead ends: 24090 [2022-11-21 16:21:54,163 INFO L226 Difference]: Without dead ends: 18549 [2022-11-21 16:21:54,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-21 16:21:54,227 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 4958 mSDsluCounter, 3172 mSDsCounter, 0 mSdLazyCounter, 8545 mSolverCounterSat, 2933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5076 SdHoareTripleChecker+Valid, 4043 SdHoareTripleChecker+Invalid, 11478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2933 IncrementalHoareTripleChecker+Valid, 8545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:21:54,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5076 Valid, 4043 Invalid, 11478 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2933 Valid, 8545 Invalid, 0 Unknown, 0 Unchecked, 20.8s Time] [2022-11-21 16:21:54,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18549 states. [2022-11-21 16:22:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18549 to 11084. [2022-11-21 16:22:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11084 states, 8020 states have (on average 1.5753117206982543) internal successors, (12634), 8625 states have internal predecessors, (12634), 2513 states have call successors, (2513), 414 states have call predecessors, (2513), 550 states have return successors, (4401), 2507 states have call predecessors, (4401), 2503 states have call successors, (4401) [2022-11-21 16:22:00,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11084 states to 11084 states and 19548 transitions. [2022-11-21 16:22:00,701 INFO L78 Accepts]: Start accepts. Automaton has 11084 states and 19548 transitions. Word has length 126 [2022-11-21 16:22:00,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:22:00,702 INFO L495 AbstractCegarLoop]: Abstraction has 11084 states and 19548 transitions. [2022-11-21 16:22:00,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-21 16:22:00,702 INFO L276 IsEmpty]: Start isEmpty. Operand 11084 states and 19548 transitions. [2022-11-21 16:22:00,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-21 16:22:00,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:22:00,707 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] [2022-11-21 16:22:00,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 16:22:00,708 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:22:00,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:22:00,708 INFO L85 PathProgramCache]: Analyzing trace with hash 287034073, now seen corresponding path program 1 times [2022-11-21 16:22:00,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:22:00,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65105042] [2022-11-21 16:22:00,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:22:00,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:22:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:00,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:22:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:01,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:01,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:22:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:01,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:01,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:22:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:01,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 16:22:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 16:22:01,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:01,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 16:22:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:01,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 16:22:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:01,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 16:22:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:01,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-21 16:22:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:01,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 16:22:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:01,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:22:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:01,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-21 16:22:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:01,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-21 16:22:01,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-21 16:22:01,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:22:01,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65105042] [2022-11-21 16:22:01,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65105042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:22:01,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:22:01,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:22:01,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884221190] [2022-11-21 16:22:01,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:22:01,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:22:01,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:22:01,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:22:01,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:22:01,122 INFO L87 Difference]: Start difference. First operand 11084 states and 19548 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 16:22:17,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:22:17,515 INFO L93 Difference]: Finished difference Result 24885 states and 45614 transitions. [2022-11-21 16:22:17,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:22:17,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2022-11-21 16:22:17,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:22:17,649 INFO L225 Difference]: With dead ends: 24885 [2022-11-21 16:22:17,649 INFO L226 Difference]: Without dead ends: 13819 [2022-11-21 16:22:17,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:22:17,765 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 987 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 3420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-21 16:22:17,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1100 Valid, 1858 Invalid, 3420 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [321 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-21 16:22:17,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13819 states. [2022-11-21 16:22:24,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13819 to 11124. [2022-11-21 16:22:24,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11124 states, 8056 states have (on average 1.5732373386295928) internal successors, (12674), 8653 states have internal predecessors, (12674), 2513 states have call successors, (2513), 430 states have call predecessors, (2513), 554 states have return successors, (4387), 2503 states have call predecessors, (4387), 2503 states have call successors, (4387) [2022-11-21 16:22:24,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11124 states to 11124 states and 19574 transitions. [2022-11-21 16:22:24,998 INFO L78 Accepts]: Start accepts. Automaton has 11124 states and 19574 transitions. Word has length 127 [2022-11-21 16:22:24,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:22:25,000 INFO L495 AbstractCegarLoop]: Abstraction has 11124 states and 19574 transitions. [2022-11-21 16:22:25,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-21 16:22:25,000 INFO L276 IsEmpty]: Start isEmpty. Operand 11124 states and 19574 transitions. [2022-11-21 16:22:25,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-21 16:22:25,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:22:25,007 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:22:25,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 16:22:25,008 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:22:25,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:22:25,008 INFO L85 PathProgramCache]: Analyzing trace with hash -321888826, now seen corresponding path program 1 times [2022-11-21 16:22:25,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:22:25,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463669364] [2022-11-21 16:22:25,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:22:25,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:22:25,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:22:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:25,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:22:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:22:25,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:22:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 16:22:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 16:22:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 16:22:25,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 16:22:25,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:22:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-21 16:22:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 16:22:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:22:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:22:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-21 16:22:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-21 16:22:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:22:25,577 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 16:22:25,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:22:25,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463669364] [2022-11-21 16:22:25,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463669364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:22:25,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:22:25,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:22:25,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730104509] [2022-11-21 16:22:25,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:22:25,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:22:25,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:22:25,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:22:25,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:22:25,580 INFO L87 Difference]: Start difference. First operand 11124 states and 19574 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 16:23:18,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:23:18,695 INFO L93 Difference]: Finished difference Result 48166 states and 96349 transitions. [2022-11-21 16:23:18,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-21 16:23:18,696 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2022-11-21 16:23:18,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:23:19,014 INFO L225 Difference]: With dead ends: 48166 [2022-11-21 16:23:19,014 INFO L226 Difference]: Without dead ends: 37060 [2022-11-21 16:23:19,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-11-21 16:23:19,148 INFO L413 NwaCegarLoop]: 842 mSDtfsCounter, 3951 mSDsluCounter, 3106 mSDsCounter, 0 mSdLazyCounter, 8656 mSolverCounterSat, 2456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4070 SdHoareTripleChecker+Valid, 3948 SdHoareTripleChecker+Invalid, 11112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2456 IncrementalHoareTripleChecker+Valid, 8656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.4s IncrementalHoareTripleChecker+Time [2022-11-21 16:23:19,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4070 Valid, 3948 Invalid, 11112 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2456 Valid, 8656 Invalid, 0 Unknown, 0 Unchecked, 21.4s Time] [2022-11-21 16:23:19,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37060 states. [2022-11-21 16:23:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37060 to 22207. [2022-11-21 16:23:32,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22207 states, 16084 states have (on average 1.5699452872419797) internal successors, (25251), 17273 states have internal predecessors, (25251), 5008 states have call successors, (5008), 854 states have call predecessors, (5008), 1114 states have return successors, (9833), 5002 states have call predecessors, (9833), 4990 states have call successors, (9833) [2022-11-21 16:23:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22207 states to 22207 states and 40092 transitions. [2022-11-21 16:23:32,884 INFO L78 Accepts]: Start accepts. Automaton has 22207 states and 40092 transitions. Word has length 137 [2022-11-21 16:23:32,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:23:32,885 INFO L495 AbstractCegarLoop]: Abstraction has 22207 states and 40092 transitions. [2022-11-21 16:23:32,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-21 16:23:32,885 INFO L276 IsEmpty]: Start isEmpty. Operand 22207 states and 40092 transitions. [2022-11-21 16:23:32,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-21 16:23:32,894 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:23:32,895 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:23:32,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 16:23:32,895 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:23:32,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:23:32,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1387835441, now seen corresponding path program 1 times [2022-11-21 16:23:32,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:23:32,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000459816] [2022-11-21 16:23:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:23:32,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:23:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:23:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:23:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:23:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:23:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 16:23:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 16:23:33,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 16:23:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 16:23:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:23:33,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 16:23:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-21 16:23:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:23:33,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:23:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-21 16:23:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-21 16:23:33,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:23:33,349 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-21 16:23:33,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:23:33,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000459816] [2022-11-21 16:23:33,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000459816] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:23:33,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:23:33,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:23:33,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330260628] [2022-11-21 16:23:33,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:23:33,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:23:33,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:23:33,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:23:33,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:23:33,352 INFO L87 Difference]: Start difference. First operand 22207 states and 40092 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 16:24:00,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 16:24:00,515 INFO L93 Difference]: Finished difference Result 49771 states and 95590 transitions. [2022-11-21 16:24:00,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-21 16:24:00,516 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2022-11-21 16:24:00,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 16:24:00,737 INFO L225 Difference]: With dead ends: 49771 [2022-11-21 16:24:00,737 INFO L226 Difference]: Without dead ends: 27582 [2022-11-21 16:24:00,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-21 16:24:00,936 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1541 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 3440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-21 16:24:00,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1653 Valid, 1717 Invalid, 3440 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [528 Valid, 2912 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-21 16:24:00,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27582 states. [2022-11-21 16:24:13,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27582 to 22287. [2022-11-21 16:24:13,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22287 states, 16156 states have (on average 1.5679004704134687) internal successors, (25331), 17345 states have internal predecessors, (25331), 5008 states have call successors, (5008), 870 states have call predecessors, (5008), 1122 states have return successors, (9817), 4994 states have call predecessors, (9817), 4990 states have call successors, (9817) [2022-11-21 16:24:13,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22287 states to 22287 states and 40156 transitions. [2022-11-21 16:24:13,947 INFO L78 Accepts]: Start accepts. Automaton has 22287 states and 40156 transitions. Word has length 138 [2022-11-21 16:24:13,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 16:24:13,948 INFO L495 AbstractCegarLoop]: Abstraction has 22287 states and 40156 transitions. [2022-11-21 16:24:13,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 16:24:13,948 INFO L276 IsEmpty]: Start isEmpty. Operand 22287 states and 40156 transitions. [2022-11-21 16:24:13,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-11-21 16:24:13,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 16:24:13,954 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 16:24:13,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 16:24:13,954 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 16:24:13,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:24:13,955 INFO L85 PathProgramCache]: Analyzing trace with hash 477742835, now seen corresponding path program 1 times [2022-11-21 16:24:13,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:24:13,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563571652] [2022-11-21 16:24:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:24:13,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:24:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:24:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-21 16:24:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 16:24:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-21 16:24:14,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-21 16:24:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-21 16:24:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-21 16:24:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 16:24:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-21 16:24:14,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-21 16:24:14,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-21 16:24:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-21 16:24:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-21 16:24:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-21 16:24:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 16:24:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-21 16:24:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:24:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-21 16:24:14,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:24:14,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563571652] [2022-11-21 16:24:14,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563571652] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:24:14,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:24:14,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 16:24:14,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710779631] [2022-11-21 16:24:14,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:24:14,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:24:14,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:24:14,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:24:14,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-21 16:24:14,506 INFO L87 Difference]: Start difference. First operand 22287 states and 40156 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17)