./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS --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 102266cd9873aec631509424dd889c2e48b781667738cfaa50930481a41b1570 --- 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-4e7fbc6 [2022-11-23 02:31:17,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 02:31:17,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 02:31:17,639 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 02:31:17,640 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 02:31:17,641 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 02:31:17,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 02:31:17,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 02:31:17,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 02:31:17,647 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 02:31:17,648 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 02:31:17,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 02:31:17,650 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 02:31:17,651 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 02:31:17,652 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 02:31:17,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 02:31:17,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 02:31:17,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 02:31:17,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 02:31:17,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 02:31:17,662 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 02:31:17,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 02:31:17,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 02:31:17,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 02:31:17,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 02:31:17,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 02:31:17,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 02:31:17,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 02:31:17,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 02:31:17,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 02:31:17,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 02:31:17,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 02:31:17,675 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 02:31:17,676 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 02:31:17,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 02:31:17,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 02:31:17,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 02:31:17,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 02:31:17,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 02:31:17,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 02:31:17,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 02:31:17,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 02:31:17,705 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 02:31:17,706 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 02:31:17,706 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 02:31:17,706 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 02:31:17,707 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 02:31:17,707 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 02:31:17,708 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 02:31:17,708 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 02:31:17,709 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 02:31:17,709 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 02:31:17,709 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 02:31:17,709 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 02:31:17,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 02:31:17,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 02:31:17,710 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 02:31:17,710 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 02:31:17,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 02:31:17,711 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 02:31:17,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 02:31:17,712 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 02:31:17,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 02:31:17,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 02:31:17,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 02:31:17,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 02:31:17,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:31:17,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 02:31:17,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 02:31:17,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 02:31:17,714 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 02:31:17,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 02:31:17,715 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 02:31:17,715 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 02:31:17,715 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 02:31:17,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 02:31:17,716 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 102266cd9873aec631509424dd889c2e48b781667738cfaa50930481a41b1570 [2022-11-23 02:31:18,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 02:31:18,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 02:31:18,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 02:31:18,048 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 02:31:18,049 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 02:31:18,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/product-lines/email_spec27_product13.cil.c [2022-11-23 02:31:21,112 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 02:31:21,436 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 02:31:21,436 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c [2022-11-23 02:31:21,472 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/data/f48eca9ca/2ef191ecada7416dac78b65c42c4b71c/FLAG0a67e20b8 [2022-11-23 02:31:21,493 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/data/f48eca9ca/2ef191ecada7416dac78b65c42c4b71c [2022-11-23 02:31:21,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 02:31:21,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 02:31:21,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 02:31:21,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 02:31:21,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 02:31:21,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:31:21" (1/1) ... [2022-11-23 02:31:21,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47813b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:21, skipping insertion in model container [2022-11-23 02:31:21,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:31:21" (1/1) ... [2022-11-23 02:31:21,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 02:31:21,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 02:31:22,277 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_47b799d9-ee06-43a9-958f-c8cb70bc1553/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c[61687,61700] [2022-11-23 02:31:22,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:31:22,308 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 02:31:22,460 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_47b799d9-ee06-43a9-958f-c8cb70bc1553/sv-benchmarks/c/product-lines/email_spec27_product13.cil.c[61687,61700] [2022-11-23 02:31:22,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 02:31:22,508 INFO L208 MainTranslator]: Completed translation [2022-11-23 02:31:22,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:22 WrapperNode [2022-11-23 02:31:22,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 02:31:22,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 02:31:22,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 02:31:22,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 02:31:22,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:22" (1/1) ... [2022-11-23 02:31:22,577 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:22" (1/1) ... [2022-11-23 02:31:22,621 INFO L138 Inliner]: procedures = 124, calls = 190, calls flagged for inlining = 52, calls inlined = 44, statements flattened = 819 [2022-11-23 02:31:22,621 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 02:31:22,622 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 02:31:22,622 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 02:31:22,623 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 02:31:22,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:22" (1/1) ... [2022-11-23 02:31:22,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:22" (1/1) ... [2022-11-23 02:31:22,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:22" (1/1) ... [2022-11-23 02:31:22,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:22" (1/1) ... [2022-11-23 02:31:22,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:22" (1/1) ... [2022-11-23 02:31:22,683 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:22" (1/1) ... [2022-11-23 02:31:22,702 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:22" (1/1) ... [2022-11-23 02:31:22,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:22" (1/1) ... [2022-11-23 02:31:22,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 02:31:22,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 02:31:22,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 02:31:22,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 02:31:22,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:22" (1/1) ... [2022-11-23 02:31:22,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 02:31:22,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:22,769 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 02:31:22,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 02:31:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-23 02:31:22,825 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-23 02:31:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-23 02:31:22,825 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-23 02:31:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-23 02:31:22,826 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-23 02:31:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-23 02:31:22,826 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-23 02:31:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-23 02:31:22,826 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-23 02:31:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-23 02:31:22,827 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-23 02:31:22,827 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-23 02:31:22,827 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-23 02:31:22,827 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-23 02:31:22,828 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-23 02:31:22,828 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-23 02:31:22,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 02:31:22,829 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-23 02:31:22,829 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-23 02:31:22,829 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-23 02:31:22,829 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-23 02:31:22,829 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-23 02:31:22,829 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-23 02:31:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-23 02:31:22,830 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-23 02:31:22,830 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-11-23 02:31:22,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-11-23 02:31:22,831 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-23 02:31:22,832 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-23 02:31:22,832 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-23 02:31:22,832 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-23 02:31:22,832 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-23 02:31:22,833 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-23 02:31:22,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 02:31:22,833 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-23 02:31:22,834 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-23 02:31:22,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 02:31:22,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 02:31:23,072 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 02:31:23,083 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 02:31:23,916 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 02:31:23,927 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 02:31:23,927 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 02:31:23,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:23 BoogieIcfgContainer [2022-11-23 02:31:23,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 02:31:23,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 02:31:23,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 02:31:23,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 02:31:23,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:31:21" (1/3) ... [2022-11-23 02:31:23,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebbf150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:31:23, skipping insertion in model container [2022-11-23 02:31:23,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:31:22" (2/3) ... [2022-11-23 02:31:23,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ebbf150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:31:23, skipping insertion in model container [2022-11-23 02:31:23,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:31:23" (3/3) ... [2022-11-23 02:31:23,948 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product13.cil.c [2022-11-23 02:31:23,968 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 02:31:23,969 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 02:31:24,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 02:31:24,041 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;@235bebcb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 02:31:24,041 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 02:31:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand has 278 states, 221 states have (on average 1.5475113122171946) internal successors, (342), 223 states have internal predecessors, (342), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2022-11-23 02:31:24,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-23 02:31:24,084 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:24,086 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-23 02:31:24,086 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:24,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:24,094 INFO L85 PathProgramCache]: Analyzing trace with hash -313384498, now seen corresponding path program 1 times [2022-11-23 02:31:24,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:24,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134700044] [2022-11-23 02:31:24,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:24,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:24,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:24,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:24,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:24,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:24,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:24,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 02:31:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:24,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 02:31:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:24,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 02:31:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:24,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-23 02:31:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:24,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-23 02:31:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:24,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 02:31:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:24,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 02:31:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:24,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-23 02:31:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:24,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-23 02:31:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:24,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:31:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 02:31:24,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:24,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134700044] [2022-11-23 02:31:24,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134700044] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:24,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043693811] [2022-11-23 02:31:24,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:24,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:24,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:24,987 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:24,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 02:31:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:25,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1012 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 02:31:25,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:25,356 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-23 02:31:25,356 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:31:25,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043693811] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:25,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:31:25,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-11-23 02:31:25,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738673365] [2022-11-23 02:31:25,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:25,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 02:31:25,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:25,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 02:31:25,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:31:25,396 INFO L87 Difference]: Start difference. First operand has 278 states, 221 states have (on average 1.5475113122171946) internal successors, (342), 223 states have internal predecessors, (342), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:25,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:25,448 INFO L93 Difference]: Finished difference Result 407 states and 598 transitions. [2022-11-23 02:31:25,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 02:31:25,456 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 105 [2022-11-23 02:31:25,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:25,469 INFO L225 Difference]: With dead ends: 407 [2022-11-23 02:31:25,469 INFO L226 Difference]: Without dead ends: 271 [2022-11-23 02:31:25,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:31:25,477 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:25,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:31:25,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-11-23 02:31:25,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2022-11-23 02:31:25,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 215 states have (on average 1.5395348837209302) internal successors, (331), 216 states have internal predecessors, (331), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-23 02:31:25,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 406 transitions. [2022-11-23 02:31:25,554 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 406 transitions. Word has length 105 [2022-11-23 02:31:25,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:25,556 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 406 transitions. [2022-11-23 02:31:25,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.0) internal successors, (62), 2 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:25,556 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 406 transitions. [2022-11-23 02:31:25,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-23 02:31:25,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:25,562 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-23 02:31:25,573 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:25,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 02:31:25,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:25,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:25,770 INFO L85 PathProgramCache]: Analyzing trace with hash 911408720, now seen corresponding path program 1 times [2022-11-23 02:31:25,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:25,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164915737] [2022-11-23 02:31:25,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:25,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:25,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 02:31:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 02:31:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 02:31:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-23 02:31:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-23 02:31:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-23 02:31:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-23 02:31:26,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-23 02:31:26,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-23 02:31:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-23 02:31:26,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-23 02:31:26,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:26,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164915737] [2022-11-23 02:31:26,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164915737] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:26,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2018592059] [2022-11-23 02:31:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:26,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:26,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:26,227 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:26,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 02:31:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:26,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 1013 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 02:31:26,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:26,568 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-23 02:31:26,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:31:26,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2018592059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:26,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:31:26,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-23 02:31:26,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403256362] [2022-11-23 02:31:26,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:26,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:31:26,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:31:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:31:26,571 INFO L87 Difference]: Start difference. First operand 271 states and 406 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:26,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:26,615 INFO L93 Difference]: Finished difference Result 397 states and 579 transitions. [2022-11-23 02:31:26,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:31:26,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 106 [2022-11-23 02:31:26,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:26,618 INFO L225 Difference]: With dead ends: 397 [2022-11-23 02:31:26,619 INFO L226 Difference]: Without dead ends: 274 [2022-11-23 02:31:26,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:31:26,621 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 1 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:26,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 806 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:31:26,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-23 02:31:26,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2022-11-23 02:31:26,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 217 states have (on average 1.5345622119815667) internal successors, (333), 218 states have internal predecessors, (333), 38 states have call successors, (38), 17 states have call predecessors, (38), 17 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2022-11-23 02:31:26,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 408 transitions. [2022-11-23 02:31:26,642 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 408 transitions. Word has length 106 [2022-11-23 02:31:26,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:26,643 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 408 transitions. [2022-11-23 02:31:26,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:26,643 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 408 transitions. [2022-11-23 02:31:26,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-23 02:31:26,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:26,647 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-23 02:31:26,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:26,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:26,854 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:26,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:26,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1386569223, now seen corresponding path program 1 times [2022-11-23 02:31:26,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:26,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597866992] [2022-11-23 02:31:26,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:26,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:27,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:27,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 02:31:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 02:31:27,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 02:31:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-23 02:31:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-23 02:31:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-23 02:31:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-23 02:31:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-23 02:31:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-23 02:31:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-23 02:31:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 02:31:27,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:27,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597866992] [2022-11-23 02:31:27,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597866992] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:27,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461848218] [2022-11-23 02:31:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:27,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:27,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:27,168 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:27,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 02:31:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:31:27,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-23 02:31:27,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:31:27,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461848218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:27,491 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:31:27,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-23 02:31:27,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297450530] [2022-11-23 02:31:27,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:27,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 02:31:27,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:27,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 02:31:27,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:31:27,493 INFO L87 Difference]: Start difference. First operand 273 states and 408 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:27,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:27,522 INFO L93 Difference]: Finished difference Result 571 states and 867 transitions. [2022-11-23 02:31:27,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 02:31:27,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 112 [2022-11-23 02:31:27,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:27,525 INFO L225 Difference]: With dead ends: 571 [2022-11-23 02:31:27,526 INFO L226 Difference]: Without dead ends: 325 [2022-11-23 02:31:27,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 02:31:27,529 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 99 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:27,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 780 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:31:27,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-11-23 02:31:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 317. [2022-11-23 02:31:27,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 250 states have (on average 1.548) internal successors, (387), 251 states have internal predecessors, (387), 49 states have call successors, (49), 17 states have call predecessors, (49), 17 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-11-23 02:31:27,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 484 transitions. [2022-11-23 02:31:27,553 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 484 transitions. Word has length 112 [2022-11-23 02:31:27,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:27,553 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 484 transitions. [2022-11-23 02:31:27,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:27,554 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 484 transitions. [2022-11-23 02:31:27,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-23 02:31:27,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:27,558 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-23 02:31:27,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:27,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:27,765 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:27,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:27,766 INFO L85 PathProgramCache]: Analyzing trace with hash 208664483, now seen corresponding path program 1 times [2022-11-23 02:31:27,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:27,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276178513] [2022-11-23 02:31:27,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:27,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:27,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:27,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:28,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 02:31:28,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:28,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-23 02:31:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:28,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-23 02:31:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:28,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-23 02:31:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-23 02:31:28,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:28,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-23 02:31:28,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:28,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-23 02:31:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:28,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-23 02:31:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:28,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-23 02:31:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:28,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-23 02:31:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:28,056 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 02:31:28,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:28,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276178513] [2022-11-23 02:31:28,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276178513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:28,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572365524] [2022-11-23 02:31:28,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:28,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:28,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:28,059 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:28,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 02:31:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:28,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 1034 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 02:31:28,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:31:28,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:31:28,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572365524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:28,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:31:28,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-23 02:31:28,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637368713] [2022-11-23 02:31:28,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:28,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:31:28,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:28,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:31:28,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:31:28,460 INFO L87 Difference]: Start difference. First operand 317 states and 484 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 02:31:28,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:28,544 INFO L93 Difference]: Finished difference Result 625 states and 958 transitions. [2022-11-23 02:31:28,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:31:28,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-11-23 02:31:28,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:28,549 INFO L225 Difference]: With dead ends: 625 [2022-11-23 02:31:28,549 INFO L226 Difference]: Without dead ends: 319 [2022-11-23 02:31:28,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-23 02:31:28,551 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 117 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:28,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1451 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:31:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-23 02:31:28,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2022-11-23 02:31:28,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 251 states have (on average 1.545816733067729) internal successors, (388), 253 states have internal predecessors, (388), 49 states have call successors, (49), 17 states have call predecessors, (49), 18 states have return successors, (50), 48 states have call predecessors, (50), 48 states have call successors, (50) [2022-11-23 02:31:28,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 487 transitions. [2022-11-23 02:31:28,574 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 487 transitions. Word has length 113 [2022-11-23 02:31:28,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:28,574 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 487 transitions. [2022-11-23 02:31:28,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 02:31:28,575 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 487 transitions. [2022-11-23 02:31:28,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-23 02:31:28,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:28,577 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:28,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:28,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:28,784 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:28,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:28,785 INFO L85 PathProgramCache]: Analyzing trace with hash 986410081, now seen corresponding path program 1 times [2022-11-23 02:31:28,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:28,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075239806] [2022-11-23 02:31:28,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:28,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:28,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:28,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:29,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-23 02:31:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-23 02:31:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-23 02:31:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 02:31:29,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-23 02:31:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-23 02:31:29,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-23 02:31:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-23 02:31:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-23 02:31:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,135 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 02:31:29,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:29,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075239806] [2022-11-23 02:31:29,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075239806] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:29,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345820852] [2022-11-23 02:31:29,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:29,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:29,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:29,138 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:29,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 02:31:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 1035 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 02:31:29,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:29,492 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-23 02:31:29,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 02:31:29,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345820852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:29,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 02:31:29,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-11-23 02:31:29,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611673609] [2022-11-23 02:31:29,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:29,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 02:31:29,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:29,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 02:31:29,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:31:29,495 INFO L87 Difference]: Start difference. First operand 319 states and 487 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 02:31:29,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:29,570 INFO L93 Difference]: Finished difference Result 627 states and 963 transitions. [2022-11-23 02:31:29,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 02:31:29,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (15), 2 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 114 [2022-11-23 02:31:29,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:29,575 INFO L225 Difference]: With dead ends: 627 [2022-11-23 02:31:29,575 INFO L226 Difference]: Without dead ends: 321 [2022-11-23 02:31:29,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-23 02:31:29,579 INFO L413 NwaCegarLoop]: 395 mSDtfsCounter, 116 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:29,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1440 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 02:31:29,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-23 02:31:29,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-11-23 02:31:29,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 252 states have (on average 1.5436507936507937) internal successors, (389), 255 states have internal predecessors, (389), 49 states have call successors, (49), 17 states have call predecessors, (49), 19 states have return successors, (55), 48 states have call predecessors, (55), 48 states have call successors, (55) [2022-11-23 02:31:29,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 493 transitions. [2022-11-23 02:31:29,611 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 493 transitions. Word has length 114 [2022-11-23 02:31:29,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:29,613 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 493 transitions. [2022-11-23 02:31:29,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 02:31:29,614 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 493 transitions. [2022-11-23 02:31:29,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-23 02:31:29,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:29,619 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:29,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:29,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:29,825 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:29,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:29,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1984465576, now seen corresponding path program 1 times [2022-11-23 02:31:29,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:29,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93041089] [2022-11-23 02:31:29,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:29,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:29,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:31:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 02:31:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-23 02:31:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-23 02:31:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-23 02:31:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-23 02:31:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-23 02:31:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-23 02:31:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-23 02:31:30,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:30,037 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 02:31:30,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:30,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93041089] [2022-11-23 02:31:30,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93041089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:30,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:30,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:31:30,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384116928] [2022-11-23 02:31:30,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:30,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:31:30,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:30,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:31:30,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:31:30,040 INFO L87 Difference]: Start difference. First operand 321 states and 493 transitions. Second operand has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 02:31:31,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:31,539 INFO L93 Difference]: Finished difference Result 677 states and 1045 transitions. [2022-11-23 02:31:31,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:31:31,539 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2022-11-23 02:31:31,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:31,542 INFO L225 Difference]: With dead ends: 677 [2022-11-23 02:31:31,542 INFO L226 Difference]: Without dead ends: 379 [2022-11-23 02:31:31,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:31:31,544 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 751 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:31,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 814 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 02:31:31,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-11-23 02:31:31,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 321. [2022-11-23 02:31:31,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 252 states have (on average 1.5436507936507937) internal successors, (389), 255 states have internal predecessors, (389), 49 states have call successors, (49), 17 states have call predecessors, (49), 19 states have return successors, (54), 48 states have call predecessors, (54), 48 states have call successors, (54) [2022-11-23 02:31:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 492 transitions. [2022-11-23 02:31:31,589 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 492 transitions. Word has length 115 [2022-11-23 02:31:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:31,589 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 492 transitions. [2022-11-23 02:31:31,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 02:31:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 492 transitions. [2022-11-23 02:31:31,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-23 02:31:31,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:31,592 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:31,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 02:31:31,592 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:31,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:31,593 INFO L85 PathProgramCache]: Analyzing trace with hash 808233348, now seen corresponding path program 2 times [2022-11-23 02:31:31,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:31,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275896554] [2022-11-23 02:31:31,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:31,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:31,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:31,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:31,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:31,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:31,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:31,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:31,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:31:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:31,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 02:31:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:31,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-23 02:31:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:31,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-23 02:31:31,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:31,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-23 02:31:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:31,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-23 02:31:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:31,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-23 02:31:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-23 02:31:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:31,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-23 02:31:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:31,844 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 02:31:31,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:31,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275896554] [2022-11-23 02:31:31,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275896554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:31,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:31,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 02:31:31,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111208107] [2022-11-23 02:31:31,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:31,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 02:31:31,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:31,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 02:31:31,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 02:31:31,847 INFO L87 Difference]: Start difference. First operand 321 states and 492 transitions. Second operand has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 02:31:33,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:33,277 INFO L93 Difference]: Finished difference Result 679 states and 1048 transitions. [2022-11-23 02:31:33,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 02:31:33,277 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2022-11-23 02:31:33,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:33,280 INFO L225 Difference]: With dead ends: 679 [2022-11-23 02:31:33,280 INFO L226 Difference]: Without dead ends: 381 [2022-11-23 02:31:33,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:31:33,282 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 747 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:33,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 814 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 02:31:33,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-23 02:31:33,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 323. [2022-11-23 02:31:33,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 253 states have (on average 1.541501976284585) internal successors, (390), 257 states have internal predecessors, (390), 49 states have call successors, (49), 17 states have call predecessors, (49), 20 states have return successors, (56), 48 states have call predecessors, (56), 48 states have call successors, (56) [2022-11-23 02:31:33,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 495 transitions. [2022-11-23 02:31:33,317 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 495 transitions. Word has length 116 [2022-11-23 02:31:33,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:33,318 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 495 transitions. [2022-11-23 02:31:33,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-23 02:31:33,318 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 495 transitions. [2022-11-23 02:31:33,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-23 02:31:33,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:33,321 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:33,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 02:31:33,321 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:33,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:33,322 INFO L85 PathProgramCache]: Analyzing trace with hash 355144749, now seen corresponding path program 1 times [2022-11-23 02:31:33,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:33,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500895055] [2022-11-23 02:31:33,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:33,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:33,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:33,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:33,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:33,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:33,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:33,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:33,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:31:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:33,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:31:33,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:33,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-23 02:31:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:33,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 02:31:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:33,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-23 02:31:33,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:33,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-23 02:31:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:33,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 02:31:33,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:33,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:31:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:33,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-23 02:31:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:33,591 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 02:31:33,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:33,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500895055] [2022-11-23 02:31:33,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500895055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:33,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:33,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 02:31:33,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453326198] [2022-11-23 02:31:33,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:33,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:31:33,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:33,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:31:33,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:31:33,594 INFO L87 Difference]: Start difference. First operand 323 states and 495 transitions. Second operand has 11 states, 10 states have (on average 8.1) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 02:31:35,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:35,583 INFO L93 Difference]: Finished difference Result 677 states and 1043 transitions. [2022-11-23 02:31:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:31:35,584 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.1) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2022-11-23 02:31:35,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:35,586 INFO L225 Difference]: With dead ends: 677 [2022-11-23 02:31:35,586 INFO L226 Difference]: Without dead ends: 381 [2022-11-23 02:31:35,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-23 02:31:35,588 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 862 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2615 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 2615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:35,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1100 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 2615 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 02:31:35,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-11-23 02:31:35,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 323. [2022-11-23 02:31:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 253 states have (on average 1.541501976284585) internal successors, (390), 257 states have internal predecessors, (390), 49 states have call successors, (49), 17 states have call predecessors, (49), 20 states have return successors, (55), 48 states have call predecessors, (55), 48 states have call successors, (55) [2022-11-23 02:31:35,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 494 transitions. [2022-11-23 02:31:35,625 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 494 transitions. Word has length 117 [2022-11-23 02:31:35,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:35,625 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 494 transitions. [2022-11-23 02:31:35,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.1) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 02:31:35,625 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 494 transitions. [2022-11-23 02:31:35,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-23 02:31:35,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:35,628 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:35,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 02:31:35,628 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:35,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:35,629 INFO L85 PathProgramCache]: Analyzing trace with hash -675608032, now seen corresponding path program 2 times [2022-11-23 02:31:35,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:35,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546080511] [2022-11-23 02:31:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:35,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:35,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:35,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:31:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:31:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-23 02:31:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-23 02:31:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-23 02:31:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-23 02:31:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:31:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-23 02:31:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 02:31:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:35,925 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-23 02:31:35,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:35,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546080511] [2022-11-23 02:31:35,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546080511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:35,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:35,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 02:31:35,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457682700] [2022-11-23 02:31:35,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:35,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:31:35,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:35,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:31:35,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:31:35,928 INFO L87 Difference]: Start difference. First operand 323 states and 494 transitions. Second operand has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 02:31:37,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:37,960 INFO L93 Difference]: Finished difference Result 679 states and 1049 transitions. [2022-11-23 02:31:37,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 02:31:37,961 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 118 [2022-11-23 02:31:37,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:37,963 INFO L225 Difference]: With dead ends: 679 [2022-11-23 02:31:37,963 INFO L226 Difference]: Without dead ends: 383 [2022-11-23 02:31:37,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-23 02:31:37,967 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 858 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1100 SdHoareTripleChecker+Invalid, 2861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:37,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 1100 Invalid, 2861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 02:31:37,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-23 02:31:37,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 325. [2022-11-23 02:31:37,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 254 states have (on average 1.5393700787401574) internal successors, (391), 259 states have internal predecessors, (391), 49 states have call successors, (49), 17 states have call predecessors, (49), 21 states have return successors, (60), 48 states have call predecessors, (60), 48 states have call successors, (60) [2022-11-23 02:31:38,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 500 transitions. [2022-11-23 02:31:38,002 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 500 transitions. Word has length 118 [2022-11-23 02:31:38,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:38,003 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 500 transitions. [2022-11-23 02:31:38,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-23 02:31:38,004 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 500 transitions. [2022-11-23 02:31:38,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-23 02:31:38,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:38,007 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:38,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 02:31:38,008 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:38,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:38,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1771087954, now seen corresponding path program 1 times [2022-11-23 02:31:38,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:38,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652575679] [2022-11-23 02:31:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:38,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:38,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:38,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:38,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:38,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:38,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:38,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:31:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:38,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:31:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:38,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-23 02:31:38,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:38,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-23 02:31:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:38,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-23 02:31:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:38,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-23 02:31:38,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:38,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-23 02:31:38,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:38,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-23 02:31:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:38,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-23 02:31:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:38,163 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:31:38,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:38,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652575679] [2022-11-23 02:31:38,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652575679] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 02:31:38,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012893144] [2022-11-23 02:31:38,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:38,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 02:31:38,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 02:31:38,165 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 02:31:38,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 02:31:38,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:38,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 02:31:38,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 02:31:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:31:38,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 02:31:38,585 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:31:38,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012893144] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 02:31:38,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 02:31:38,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-11-23 02:31:38,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081370231] [2022-11-23 02:31:38,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 02:31:38,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 02:31:38,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:38,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 02:31:38,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:31:38,588 INFO L87 Difference]: Start difference. First operand 325 states and 500 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 02:31:40,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:40,307 INFO L93 Difference]: Finished difference Result 833 states and 1347 transitions. [2022-11-23 02:31:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 02:31:40,308 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 119 [2022-11-23 02:31:40,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:40,315 INFO L225 Difference]: With dead ends: 833 [2022-11-23 02:31:40,315 INFO L226 Difference]: Without dead ends: 710 [2022-11-23 02:31:40,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-23 02:31:40,317 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 933 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 1822 mSolverCounterSat, 290 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:40,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [978 Valid, 1170 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1822 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 02:31:40,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-11-23 02:31:40,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 628. [2022-11-23 02:31:40,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 493 states have (on average 1.6004056795131847) internal successors, (789), 498 states have internal predecessors, (789), 113 states have call successors, (113), 17 states have call predecessors, (113), 21 states have return successors, (134), 112 states have call predecessors, (134), 112 states have call successors, (134) [2022-11-23 02:31:40,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1036 transitions. [2022-11-23 02:31:40,393 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1036 transitions. Word has length 119 [2022-11-23 02:31:40,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:40,394 INFO L495 AbstractCegarLoop]: Abstraction has 628 states and 1036 transitions. [2022-11-23 02:31:40,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 7 states have internal predecessors, (113), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-23 02:31:40,394 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1036 transitions. [2022-11-23 02:31:40,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-23 02:31:40,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:40,399 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:40,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 02:31:40,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_47b799d9-ee06-43a9-958f-c8cb70bc1553/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 02:31:40,606 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:40,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:40,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1209872817, now seen corresponding path program 1 times [2022-11-23 02:31:40,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:40,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687327345] [2022-11-23 02:31:40,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:40,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:40,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:40,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:40,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:40,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:40,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:40,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:31:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:40,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:31:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:40,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-23 02:31:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:40,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-23 02:31:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:40,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-23 02:31:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:40,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:31:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:40,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-23 02:31:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:40,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-23 02:31:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:40,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:31:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:40,765 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:31:40,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:40,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687327345] [2022-11-23 02:31:40,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687327345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:40,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:40,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:31:40,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329815919] [2022-11-23 02:31:40,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:40,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:31:40,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:40,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:31:40,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:31:40,768 INFO L87 Difference]: Start difference. First operand 628 states and 1036 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:41,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:41,925 INFO L93 Difference]: Finished difference Result 1554 states and 2626 transitions. [2022-11-23 02:31:41,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:31:41,925 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-11-23 02:31:41,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:41,931 INFO L225 Difference]: With dead ends: 1554 [2022-11-23 02:31:41,931 INFO L226 Difference]: Without dead ends: 994 [2022-11-23 02:31:41,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:31:41,934 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 731 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:41,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 689 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 02:31:41,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2022-11-23 02:31:42,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 928. [2022-11-23 02:31:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 928 states, 729 states have (on average 1.6104252400548698) internal successors, (1174), 734 states have internal predecessors, (1174), 177 states have call successors, (177), 17 states have call predecessors, (177), 21 states have return successors, (208), 176 states have call predecessors, (208), 176 states have call successors, (208) [2022-11-23 02:31:42,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1559 transitions. [2022-11-23 02:31:42,018 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1559 transitions. Word has length 125 [2022-11-23 02:31:42,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:42,019 INFO L495 AbstractCegarLoop]: Abstraction has 928 states and 1559 transitions. [2022-11-23 02:31:42,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:42,019 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1559 transitions. [2022-11-23 02:31:42,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-23 02:31:42,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:42,026 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:42,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 02:31:42,026 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:42,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:42,027 INFO L85 PathProgramCache]: Analyzing trace with hash -2036554710, now seen corresponding path program 1 times [2022-11-23 02:31:42,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:42,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938749069] [2022-11-23 02:31:42,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:42,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:42,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:42,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:42,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:42,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:42,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:42,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:31:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:42,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:31:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:42,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-23 02:31:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:42,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-23 02:31:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:42,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-23 02:31:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:42,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-23 02:31:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:42,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-23 02:31:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:42,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-23 02:31:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:42,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-23 02:31:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:42,167 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:31:42,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:42,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938749069] [2022-11-23 02:31:42,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938749069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:42,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:42,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:31:42,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284190099] [2022-11-23 02:31:42,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:42,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:31:42,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:42,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:31:42,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:31:42,170 INFO L87 Difference]: Start difference. First operand 928 states and 1559 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:43,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:43,333 INFO L93 Difference]: Finished difference Result 2269 states and 3871 transitions. [2022-11-23 02:31:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:31:43,334 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2022-11-23 02:31:43,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:43,341 INFO L225 Difference]: With dead ends: 2269 [2022-11-23 02:31:43,342 INFO L226 Difference]: Without dead ends: 1462 [2022-11-23 02:31:43,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:31:43,346 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 729 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 744 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:43,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [744 Valid, 662 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 02:31:43,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-11-23 02:31:43,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1396. [2022-11-23 02:31:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1396 states, 1102 states have (on average 1.616152450090744) internal successors, (1781), 1107 states have internal predecessors, (1781), 272 states have call successors, (272), 17 states have call predecessors, (272), 21 states have return successors, (303), 271 states have call predecessors, (303), 271 states have call successors, (303) [2022-11-23 02:31:43,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1396 states to 1396 states and 2356 transitions. [2022-11-23 02:31:43,519 INFO L78 Accepts]: Start accepts. Automaton has 1396 states and 2356 transitions. Word has length 126 [2022-11-23 02:31:43,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:43,520 INFO L495 AbstractCegarLoop]: Abstraction has 1396 states and 2356 transitions. [2022-11-23 02:31:43,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:43,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1396 states and 2356 transitions. [2022-11-23 02:31:43,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-23 02:31:43,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:43,530 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:43,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 02:31:43,530 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:43,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:43,531 INFO L85 PathProgramCache]: Analyzing trace with hash 755234193, now seen corresponding path program 1 times [2022-11-23 02:31:43,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:43,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358150409] [2022-11-23 02:31:43,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:43,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:43,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:43,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:43,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:43,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:43,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:31:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:43,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:31:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:43,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-23 02:31:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:43,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-23 02:31:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:43,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-23 02:31:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:43,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-23 02:31:43,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:43,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-23 02:31:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:43,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-23 02:31:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:43,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-23 02:31:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:31:43,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:43,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358150409] [2022-11-23 02:31:43,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358150409] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:43,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:43,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:31:43,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827202030] [2022-11-23 02:31:43,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:43,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:31:43,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:43,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:31:43,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:31:43,646 INFO L87 Difference]: Start difference. First operand 1396 states and 2356 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:44,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:44,875 INFO L93 Difference]: Finished difference Result 3316 states and 5712 transitions. [2022-11-23 02:31:44,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:31:44,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-11-23 02:31:44,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:44,903 INFO L225 Difference]: With dead ends: 3316 [2022-11-23 02:31:44,903 INFO L226 Difference]: Without dead ends: 2166 [2022-11-23 02:31:44,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:31:44,909 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 727 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:44,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 662 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 02:31:44,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2166 states. [2022-11-23 02:31:45,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2166 to 2100. [2022-11-23 02:31:45,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2100 states, 1683 states have (on average 1.6209150326797386) internal successors, (2728), 1688 states have internal predecessors, (2728), 395 states have call successors, (395), 17 states have call predecessors, (395), 21 states have return successors, (442), 394 states have call predecessors, (442), 394 states have call successors, (442) [2022-11-23 02:31:45,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2100 states to 2100 states and 3565 transitions. [2022-11-23 02:31:45,165 INFO L78 Accepts]: Start accepts. Automaton has 2100 states and 3565 transitions. Word has length 127 [2022-11-23 02:31:45,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:45,166 INFO L495 AbstractCegarLoop]: Abstraction has 2100 states and 3565 transitions. [2022-11-23 02:31:45,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:45,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2100 states and 3565 transitions. [2022-11-23 02:31:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-23 02:31:45,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:45,180 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:45,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 02:31:45,180 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:45,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:45,181 INFO L85 PathProgramCache]: Analyzing trace with hash -795510101, now seen corresponding path program 1 times [2022-11-23 02:31:45,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:45,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530722275] [2022-11-23 02:31:45,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:45,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:45,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:45,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:45,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:45,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:45,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:45,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:31:45,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:45,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:31:45,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:45,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-23 02:31:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:45,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-23 02:31:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:45,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-23 02:31:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:45,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-23 02:31:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:45,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-23 02:31:45,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:45,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-23 02:31:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:45,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 02:31:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:45,304 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:31:45,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:45,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530722275] [2022-11-23 02:31:45,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530722275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:45,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:45,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:31:45,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891153379] [2022-11-23 02:31:45,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:45,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:31:45,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:45,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:31:45,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:31:45,307 INFO L87 Difference]: Start difference. First operand 2100 states and 3565 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:46,619 INFO L93 Difference]: Finished difference Result 4935 states and 8566 transitions. [2022-11-23 02:31:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:31:46,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-11-23 02:31:46,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:46,638 INFO L225 Difference]: With dead ends: 4935 [2022-11-23 02:31:46,639 INFO L226 Difference]: Without dead ends: 3285 [2022-11-23 02:31:46,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:31:46,646 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 725 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:46,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 661 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 02:31:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3285 states. [2022-11-23 02:31:46,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3285 to 3219. [2022-11-23 02:31:46,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3219 states, 2623 states have (on average 1.6237133053755242) internal successors, (4259), 2628 states have internal predecessors, (4259), 574 states have call successors, (574), 17 states have call predecessors, (574), 21 states have return successors, (647), 573 states have call predecessors, (647), 573 states have call successors, (647) [2022-11-23 02:31:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3219 states to 3219 states and 5480 transitions. [2022-11-23 02:31:46,995 INFO L78 Accepts]: Start accepts. Automaton has 3219 states and 5480 transitions. Word has length 128 [2022-11-23 02:31:46,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:46,995 INFO L495 AbstractCegarLoop]: Abstraction has 3219 states and 5480 transitions. [2022-11-23 02:31:46,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:46,996 INFO L276 IsEmpty]: Start isEmpty. Operand 3219 states and 5480 transitions. [2022-11-23 02:31:47,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-23 02:31:47,009 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:47,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:47,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 02:31:47,010 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:47,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:47,010 INFO L85 PathProgramCache]: Analyzing trace with hash 2137708781, now seen corresponding path program 1 times [2022-11-23 02:31:47,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:47,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078132151] [2022-11-23 02:31:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:47,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:47,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:47,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:47,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:47,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:47,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:47,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:31:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:47,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:31:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:47,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-23 02:31:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:47,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-23 02:31:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:47,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-23 02:31:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:47,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-23 02:31:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:47,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-23 02:31:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:47,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-23 02:31:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:47,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-11-23 02:31:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:31:47,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:47,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078132151] [2022-11-23 02:31:47,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078132151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:47,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:47,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:31:47,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537532665] [2022-11-23 02:31:47,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:47,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:31:47,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:47,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:31:47,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:31:47,134 INFO L87 Difference]: Start difference. First operand 3219 states and 5480 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:48,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:48,650 INFO L93 Difference]: Finished difference Result 7853 states and 13665 transitions. [2022-11-23 02:31:48,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:31:48,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-11-23 02:31:48,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:48,679 INFO L225 Difference]: With dead ends: 7853 [2022-11-23 02:31:48,680 INFO L226 Difference]: Without dead ends: 5316 [2022-11-23 02:31:48,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:31:48,689 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 723 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 221 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 221 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:48,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 687 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [221 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 02:31:48,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5316 states. [2022-11-23 02:31:49,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5316 to 5250. [2022-11-23 02:31:49,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5250 states, 4278 states have (on average 1.6154745208041141) internal successors, (6911), 4283 states have internal predecessors, (6911), 950 states have call successors, (950), 17 states have call predecessors, (950), 21 states have return successors, (1067), 949 states have call predecessors, (1067), 949 states have call successors, (1067) [2022-11-23 02:31:49,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5250 states to 5250 states and 8928 transitions. [2022-11-23 02:31:49,242 INFO L78 Accepts]: Start accepts. Automaton has 5250 states and 8928 transitions. Word has length 129 [2022-11-23 02:31:49,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:49,242 INFO L495 AbstractCegarLoop]: Abstraction has 5250 states and 8928 transitions. [2022-11-23 02:31:49,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 5250 states and 8928 transitions. [2022-11-23 02:31:49,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-11-23 02:31:49,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:49,279 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:49,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 02:31:49,279 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:49,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:49,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1854632113, now seen corresponding path program 1 times [2022-11-23 02:31:49,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:49,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963279524] [2022-11-23 02:31:49,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:49,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:49,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:49,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:49,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:49,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:49,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:31:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:49,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:31:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:49,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-11-23 02:31:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:49,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-23 02:31:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:49,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-23 02:31:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:49,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-23 02:31:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:49,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-23 02:31:49,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:49,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-23 02:31:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:49,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-23 02:31:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:49,421 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:31:49,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:49,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963279524] [2022-11-23 02:31:49,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963279524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:49,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:49,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:31:49,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259553290] [2022-11-23 02:31:49,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:49,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:31:49,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:49,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:31:49,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:31:49,425 INFO L87 Difference]: Start difference. First operand 5250 states and 8928 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:51,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:51,178 INFO L93 Difference]: Finished difference Result 12995 states and 22574 transitions. [2022-11-23 02:31:51,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:31:51,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2022-11-23 02:31:51,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:51,241 INFO L225 Difference]: With dead ends: 12995 [2022-11-23 02:31:51,248 INFO L226 Difference]: Without dead ends: 8804 [2022-11-23 02:31:51,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:31:51,268 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 721 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 736 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:51,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [736 Valid, 663 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 02:31:51,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8804 states. [2022-11-23 02:31:52,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8804 to 8738. [2022-11-23 02:31:52,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8738 states, 7160 states have (on average 1.6124301675977655) internal successors, (11545), 7165 states have internal predecessors, (11545), 1556 states have call successors, (1556), 17 states have call predecessors, (1556), 21 states have return successors, (1751), 1555 states have call predecessors, (1751), 1555 states have call successors, (1751) [2022-11-23 02:31:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8738 states to 8738 states and 14852 transitions. [2022-11-23 02:31:52,198 INFO L78 Accepts]: Start accepts. Automaton has 8738 states and 14852 transitions. Word has length 130 [2022-11-23 02:31:52,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:52,199 INFO L495 AbstractCegarLoop]: Abstraction has 8738 states and 14852 transitions. [2022-11-23 02:31:52,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:52,199 INFO L276 IsEmpty]: Start isEmpty. Operand 8738 states and 14852 transitions. [2022-11-23 02:31:52,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-23 02:31:52,305 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:52,305 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:52,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 02:31:52,305 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:52,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:52,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1741509135, now seen corresponding path program 1 times [2022-11-23 02:31:52,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:52,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614778257] [2022-11-23 02:31:52,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:52,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:52,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:52,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:52,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:52,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:31:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:31:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-23 02:31:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:52,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-23 02:31:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-23 02:31:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:52,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-23 02:31:52,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-23 02:31:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-23 02:31:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:52,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-23 02:31:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:31:52,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:52,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614778257] [2022-11-23 02:31:52,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614778257] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:52,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:52,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:31:52,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478907439] [2022-11-23 02:31:52,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:52,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:31:52,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:52,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:31:52,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:31:52,419 INFO L87 Difference]: Start difference. First operand 8738 states and 14852 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:54,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:54,639 INFO L93 Difference]: Finished difference Result 22654 states and 39280 transitions. [2022-11-23 02:31:54,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:31:54,639 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 131 [2022-11-23 02:31:54,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:54,722 INFO L225 Difference]: With dead ends: 22654 [2022-11-23 02:31:54,723 INFO L226 Difference]: Without dead ends: 15397 [2022-11-23 02:31:54,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:31:54,756 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 719 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:54,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 693 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 02:31:54,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15397 states. [2022-11-23 02:31:56,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15397 to 15331. [2022-11-23 02:31:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15331 states, 12550 states have (on average 1.6024701195219124) internal successors, (20111), 12555 states have internal predecessors, (20111), 2759 states have call successors, (2759), 17 states have call predecessors, (2759), 21 states have return successors, (3098), 2758 states have call predecessors, (3098), 2758 states have call successors, (3098) [2022-11-23 02:31:56,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15331 states to 15331 states and 25968 transitions. [2022-11-23 02:31:56,253 INFO L78 Accepts]: Start accepts. Automaton has 15331 states and 25968 transitions. Word has length 131 [2022-11-23 02:31:56,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:31:56,253 INFO L495 AbstractCegarLoop]: Abstraction has 15331 states and 25968 transitions. [2022-11-23 02:31:56,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:56,254 INFO L276 IsEmpty]: Start isEmpty. Operand 15331 states and 25968 transitions. [2022-11-23 02:31:56,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-23 02:31:56,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:31:56,292 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:31:56,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 02:31:56,292 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:31:56,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:31:56,293 INFO L85 PathProgramCache]: Analyzing trace with hash -873756304, now seen corresponding path program 1 times [2022-11-23 02:31:56,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:31:56,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912576566] [2022-11-23 02:31:56,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:31:56,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:31:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:56,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:31:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:56,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:31:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:31:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:56,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:31:56,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:56,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:31:56,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:56,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:31:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:56,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-23 02:31:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:56,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-23 02:31:56,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:56,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-23 02:31:56,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:56,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-23 02:31:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:56,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-23 02:31:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:56,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-23 02:31:56,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:56,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-23 02:31:56,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:31:56,418 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:31:56,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:31:56,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912576566] [2022-11-23 02:31:56,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912576566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:31:56,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:31:56,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:31:56,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749203307] [2022-11-23 02:31:56,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:31:56,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:31:56,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:31:56,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:31:56,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:31:56,421 INFO L87 Difference]: Start difference. First operand 15331 states and 25968 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:31:59,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:31:59,618 INFO L93 Difference]: Finished difference Result 40610 states and 70263 transitions. [2022-11-23 02:31:59,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:31:59,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2022-11-23 02:31:59,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:31:59,741 INFO L225 Difference]: With dead ends: 40610 [2022-11-23 02:31:59,741 INFO L226 Difference]: Without dead ends: 27367 [2022-11-23 02:31:59,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:31:59,782 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 717 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 904 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 1128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:31:59,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 664 Invalid, 1128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 904 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 02:31:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27367 states. [2022-11-23 02:32:02,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27367 to 27301. [2022-11-23 02:32:02,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27301 states, 22481 states have (on average 1.5977492104443753) internal successors, (35919), 22486 states have internal predecessors, (35919), 4798 states have call successors, (4798), 17 states have call predecessors, (4798), 21 states have return successors, (5411), 4797 states have call predecessors, (5411), 4797 states have call successors, (5411) [2022-11-23 02:32:02,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27301 states to 27301 states and 46128 transitions. [2022-11-23 02:32:02,334 INFO L78 Accepts]: Start accepts. Automaton has 27301 states and 46128 transitions. Word has length 132 [2022-11-23 02:32:02,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:32:02,334 INFO L495 AbstractCegarLoop]: Abstraction has 27301 states and 46128 transitions. [2022-11-23 02:32:02,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:32:02,335 INFO L276 IsEmpty]: Start isEmpty. Operand 27301 states and 46128 transitions. [2022-11-23 02:32:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-23 02:32:02,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:32:02,370 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:32:02,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 02:32:02,371 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:32:02,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:32:02,371 INFO L85 PathProgramCache]: Analyzing trace with hash -500581487, now seen corresponding path program 1 times [2022-11-23 02:32:02,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:32:02,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279713266] [2022-11-23 02:32:02,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:32:02,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:32:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:32:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:32:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:32:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:32:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:32:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-23 02:32:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-23 02:32:02,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-23 02:32:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-23 02:32:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-23 02:32:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-23 02:32:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-23 02:32:02,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:32:02,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:32:02,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279713266] [2022-11-23 02:32:02,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279713266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:32:02,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:32:02,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:32:02,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519753880] [2022-11-23 02:32:02,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:32:02,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:32:02,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:32:02,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:32:02,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:32:02,499 INFO L87 Difference]: Start difference. First operand 27301 states and 46128 transitions. Second operand has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:32:07,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:32:07,491 INFO L93 Difference]: Finished difference Result 74397 states and 127862 transitions. [2022-11-23 02:32:07,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:32:07,507 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2022-11-23 02:32:07,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:32:07,751 INFO L225 Difference]: With dead ends: 74397 [2022-11-23 02:32:07,752 INFO L226 Difference]: Without dead ends: 49916 [2022-11-23 02:32:07,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:32:07,822 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 715 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 730 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:32:07,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [730 Valid, 671 Invalid, 1124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 02:32:07,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49916 states. [2022-11-23 02:32:12,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49916 to 49850. [2022-11-23 02:32:12,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49850 states, 41315 states have (on average 1.5916737262495462) internal successors, (65760), 41320 states have internal predecessors, (65760), 8513 states have call successors, (8513), 17 states have call predecessors, (8513), 21 states have return successors, (9658), 8512 states have call predecessors, (9658), 8512 states have call successors, (9658) [2022-11-23 02:32:12,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49850 states to 49850 states and 83931 transitions. [2022-11-23 02:32:12,538 INFO L78 Accepts]: Start accepts. Automaton has 49850 states and 83931 transitions. Word has length 133 [2022-11-23 02:32:12,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:32:12,539 INFO L495 AbstractCegarLoop]: Abstraction has 49850 states and 83931 transitions. [2022-11-23 02:32:12,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.333333333333334) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:32:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 49850 states and 83931 transitions. [2022-11-23 02:32:12,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-23 02:32:12,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:32:12,594 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:32:12,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 02:32:12,594 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:32:12,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:32:12,595 INFO L85 PathProgramCache]: Analyzing trace with hash 925174768, now seen corresponding path program 1 times [2022-11-23 02:32:12,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:32:12,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781247394] [2022-11-23 02:32:12,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:32:12,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:32:12,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:32:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:32:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:32:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:32:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-23 02:32:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-23 02:32:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-23 02:32:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-23 02:32:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-23 02:32:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-23 02:32:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-23 02:32:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-23 02:32:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-23 02:32:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:32:12,713 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-23 02:32:12,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:32:12,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781247394] [2022-11-23 02:32:12,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781247394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:32:12,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:32:12,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 02:32:12,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746869523] [2022-11-23 02:32:12,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:32:12,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 02:32:12,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:32:12,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 02:32:12,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 02:32:12,716 INFO L87 Difference]: Start difference. First operand 49850 states and 83931 transitions. Second operand has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-23 02:32:20,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:32:20,027 INFO L93 Difference]: Finished difference Result 92883 states and 159993 transitions. [2022-11-23 02:32:20,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 02:32:20,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.5) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 134 [2022-11-23 02:32:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:32:20,662 INFO L225 Difference]: With dead ends: 92883 [2022-11-23 02:32:20,662 INFO L226 Difference]: Without dead ends: 92760 [2022-11-23 02:32:20,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-23 02:32:20,699 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 713 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 02:32:20,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 665 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 02:32:20,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92760 states.