./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b 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_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN --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 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 --- 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-6b4ec56 [2022-11-20 11:38:21,591 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:38:21,593 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:38:21,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:38:21,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:38:21,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:38:21,617 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:38:21,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:38:21,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:38:21,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:38:21,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:38:21,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:38:21,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:38:21,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:38:21,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:38:21,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:38:21,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:38:21,631 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:38:21,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:38:21,635 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:38:21,636 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:38:21,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:38:21,639 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:38:21,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:38:21,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:38:21,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:38:21,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:38:21,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:38:21,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:38:21,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:38:21,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:38:21,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:38:21,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:38:21,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:38:21,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:38:21,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:38:21,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:38:21,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:38:21,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:38:21,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:38:21,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:38:21,660 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:38:21,686 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:38:21,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:38:21,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:38:21,687 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:38:21,688 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:38:21,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:38:21,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:38:21,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:38:21,690 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:38:21,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:38:21,691 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:38:21,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:38:21,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:38:21,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:38:21,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:38:21,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:38:21,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:38:21,693 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:38:21,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:38:21,694 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:38:21,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:38:21,695 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:38:21,695 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:38:21,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:38:21,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:38:21,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:38:21,697 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:38:21,697 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:38:21,698 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:38:21,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:38:21,698 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:38:21,699 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:38:21,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:38:21,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 [2022-11-20 11:38:22,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:38:22,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:38:22,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:38:22,072 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:38:22,073 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:38:22,074 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2022-11-20 11:38:25,309 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:38:25,827 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:38:25,828 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2022-11-20 11:38:25,853 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/data/f654da791/48f7c611d81f4435be3ca51f0a89c704/FLAG61a268628 [2022-11-20 11:38:25,871 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/data/f654da791/48f7c611d81f4435be3ca51f0a89c704 [2022-11-20 11:38:25,874 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:38:25,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:38:25,878 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:38:25,878 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:38:25,882 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:38:25,883 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:38:25" (1/1) ... [2022-11-20 11:38:25,885 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a9ab2f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:25, skipping insertion in model container [2022-11-20 11:38:25,885 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:38:25" (1/1) ... [2022-11-20 11:38:25,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:38:25,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:38:26,342 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_c06cc034-11f8-45b4-b68c-db58b5ee2edc/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c[14523,14536] [2022-11-20 11:38:26,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:38:26,634 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:38:26,692 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_c06cc034-11f8-45b4-b68c-db58b5ee2edc/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c[14523,14536] [2022-11-20 11:38:26,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:38:26,954 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:38:26,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:26 WrapperNode [2022-11-20 11:38:26,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:38:26,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:38:26,972 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:38:26,972 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:38:26,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:26" (1/1) ... [2022-11-20 11:38:27,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:26" (1/1) ... [2022-11-20 11:38:27,130 INFO L138 Inliner]: procedures = 93, calls = 353, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 949 [2022-11-20 11:38:27,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:38:27,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:38:27,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:38:27,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:38:27,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:26" (1/1) ... [2022-11-20 11:38:27,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:26" (1/1) ... [2022-11-20 11:38:27,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:26" (1/1) ... [2022-11-20 11:38:27,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:26" (1/1) ... [2022-11-20 11:38:27,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:26" (1/1) ... [2022-11-20 11:38:27,237 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:26" (1/1) ... [2022-11-20 11:38:27,251 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:26" (1/1) ... [2022-11-20 11:38:27,263 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:26" (1/1) ... [2022-11-20 11:38:27,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:38:27,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:38:27,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:38:27,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:38:27,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:26" (1/1) ... [2022-11-20 11:38:27,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:38:27,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:38:27,337 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:38:27,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:38:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:38:27,391 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-20 11:38:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-20 11:38:27,392 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-20 11:38:27,392 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-20 11:38:27,393 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-20 11:38:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-20 11:38:27,394 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-20 11:38:27,394 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-20 11:38:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-20 11:38:27,395 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-20 11:38:27,395 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-20 11:38:27,395 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-20 11:38:27,396 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-11-20 11:38:27,396 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-11-20 11:38:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-20 11:38:27,397 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-20 11:38:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-20 11:38:27,397 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-20 11:38:27,397 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-20 11:38:27,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-20 11:38:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-20 11:38:27,398 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-20 11:38:27,398 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-20 11:38:27,399 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-20 11:38:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-20 11:38:27,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-20 11:38:27,399 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-20 11:38:27,399 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-20 11:38:27,400 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-11-20 11:38:27,400 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-11-20 11:38:27,401 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-20 11:38:27,401 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-20 11:38:27,402 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-11-20 11:38:27,402 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-11-20 11:38:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-20 11:38:27,403 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-20 11:38:27,403 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-20 11:38:27,404 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-20 11:38:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-20 11:38:27,404 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-20 11:38:27,404 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-20 11:38:27,405 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-20 11:38:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:38:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-20 11:38:27,405 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-20 11:38:27,405 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-20 11:38:27,406 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-20 11:38:27,406 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-20 11:38:27,406 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-20 11:38:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-20 11:38:27,407 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-20 11:38:27,407 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-11-20 11:38:27,407 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-11-20 11:38:27,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:38:27,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:38:27,409 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-20 11:38:27,410 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-20 11:38:27,618 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:38:27,628 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:38:29,183 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:38:29,209 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:38:29,209 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:38:29,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:38:29 BoogieIcfgContainer [2022-11-20 11:38:29,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:38:29,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:38:29,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:38:29,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:38:29,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:38:25" (1/3) ... [2022-11-20 11:38:29,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783e4cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:38:29, skipping insertion in model container [2022-11-20 11:38:29,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:38:26" (2/3) ... [2022-11-20 11:38:29,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@783e4cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:38:29, skipping insertion in model container [2022-11-20 11:38:29,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:38:29" (3/3) ... [2022-11-20 11:38:29,228 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product30.cil.c [2022-11-20 11:38:29,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:38:29,252 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:38:29,338 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:38:29,354 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;@2b1d3f85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:38:29,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:38:29,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 605 states, 468 states have (on average 1.6752136752136753) internal successors, (784), 488 states have internal predecessors, (784), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2022-11-20 11:38:29,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 11:38:29,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:29,401 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:29,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:29,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:29,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1554402963, now seen corresponding path program 1 times [2022-11-20 11:38:29,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:29,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598761834] [2022-11-20 11:38:29,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:29,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:30,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:38:30,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:30,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:38:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:30,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:38:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:30,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:38:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:30,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:38:30,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:31,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-20 11:38:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:31,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 11:38:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:31,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-20 11:38:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:38:31,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:31,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598761834] [2022-11-20 11:38:31,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598761834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:31,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:31,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:38:31,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55212724] [2022-11-20 11:38:31,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:31,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:38:31,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:31,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:38:31,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:38:31,113 INFO L87 Difference]: Start difference. First operand has 605 states, 468 states have (on average 1.6752136752136753) internal successors, (784), 488 states have internal predecessors, (784), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:38:42,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:42,366 INFO L93 Difference]: Finished difference Result 1491 states and 2561 transitions. [2022-11-20 11:38:42,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:38:42,373 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-11-20 11:38:42,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:42,410 INFO L225 Difference]: With dead ends: 1491 [2022-11-20 11:38:42,416 INFO L226 Difference]: Without dead ends: 890 [2022-11-20 11:38:42,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:38:42,439 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1600 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 5533 mSolverCounterSat, 442 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 5975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 442 IncrementalHoareTripleChecker+Valid, 5533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:38:42,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 2468 Invalid, 5975 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [442 Valid, 5533 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2022-11-20 11:38:42,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-11-20 11:38:42,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 608. [2022-11-20 11:38:42,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 471 states have (on average 1.6666666666666667) internal successors, (785), 491 states have internal predecessors, (785), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2022-11-20 11:38:42,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1002 transitions. [2022-11-20 11:38:42,852 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1002 transitions. Word has length 67 [2022-11-20 11:38:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:42,854 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 1002 transitions. [2022-11-20 11:38:42,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:38:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1002 transitions. [2022-11-20 11:38:42,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 11:38:42,866 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:42,867 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:42,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:38:42,868 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:42,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:42,868 INFO L85 PathProgramCache]: Analyzing trace with hash -351252067, now seen corresponding path program 1 times [2022-11-20 11:38:42,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:42,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614249876] [2022-11-20 11:38:42,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:42,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:43,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:38:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:43,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:38:43,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:43,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:38:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:43,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:38:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:43,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:38:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:43,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:38:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:43,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:38:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:43,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:38:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:38:43,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:43,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614249876] [2022-11-20 11:38:43,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614249876] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:43,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:43,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:38:43,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45072293] [2022-11-20 11:38:43,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:43,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:38:43,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:43,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:38:43,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:38:43,661 INFO L87 Difference]: Start difference. First operand 608 states and 1002 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:38:52,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:38:52,502 INFO L93 Difference]: Finished difference Result 1481 states and 2519 transitions. [2022-11-20 11:38:52,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:38:52,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-20 11:38:52,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:38:52,513 INFO L225 Difference]: With dead ends: 1481 [2022-11-20 11:38:52,514 INFO L226 Difference]: Without dead ends: 889 [2022-11-20 11:38:52,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:38:52,520 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 920 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 3083 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1373 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 3083 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:38:52,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1373 Invalid, 3292 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [209 Valid, 3083 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-20 11:38:52,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-11-20 11:38:52,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 608. [2022-11-20 11:38:52,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 471 states have (on average 1.664543524416136) internal successors, (784), 491 states have internal predecessors, (784), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2022-11-20 11:38:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1001 transitions. [2022-11-20 11:38:52,723 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1001 transitions. Word has length 68 [2022-11-20 11:38:52,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:38:52,724 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 1001 transitions. [2022-11-20 11:38:52,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:38:52,724 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1001 transitions. [2022-11-20 11:38:52,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 11:38:52,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:38:52,727 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:38:52,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:38:52,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:38:52,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:38:52,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1979877755, now seen corresponding path program 1 times [2022-11-20 11:38:52,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:38:52,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956152538] [2022-11-20 11:38:52,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:38:52,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:38:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:53,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:38:53,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:53,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:38:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:53,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:38:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:53,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:38:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:53,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-20 11:38:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:53,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-20 11:38:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:53,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:38:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:53,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-20 11:38:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:38:53,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:38:53,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:38:53,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956152538] [2022-11-20 11:38:53,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956152538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:38:53,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:38:53,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:38:53,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386957346] [2022-11-20 11:38:53,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:38:53,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:38:53,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:38:53,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:38:53,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:38:53,303 INFO L87 Difference]: Start difference. First operand 608 states and 1001 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:39:01,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:39:01,035 INFO L93 Difference]: Finished difference Result 1476 states and 2505 transitions. [2022-11-20 11:39:01,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:39:01,037 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-11-20 11:39:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:39:01,056 INFO L225 Difference]: With dead ends: 1476 [2022-11-20 11:39:01,057 INFO L226 Difference]: Without dead ends: 853 [2022-11-20 11:39:01,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:39:01,072 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 1484 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 2891 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 2891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:39:01,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 1340 Invalid, 3322 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [431 Valid, 2891 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 11:39:01,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-11-20 11:39:01,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 584. [2022-11-20 11:39:01,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 450 states have (on average 1.6555555555555554) internal successors, (745), 468 states have internal predecessors, (745), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 11:39:01,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 958 transitions. [2022-11-20 11:39:01,315 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 958 transitions. Word has length 68 [2022-11-20 11:39:01,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:39:01,315 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 958 transitions. [2022-11-20 11:39:01,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:39:01,316 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 958 transitions. [2022-11-20 11:39:01,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-20 11:39:01,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:39:01,318 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:39:01,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:39:01,319 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:39:01,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:39:01,319 INFO L85 PathProgramCache]: Analyzing trace with hash 815635743, now seen corresponding path program 1 times [2022-11-20 11:39:01,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:39:01,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057589483] [2022-11-20 11:39:01,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:39:01,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:39:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:01,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:39:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:01,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:39:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:01,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:39:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:01,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:39:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:01,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:39:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:02,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:39:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:02,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:39:02,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:02,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-20 11:39:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:02,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:39:02,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:39:02,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057589483] [2022-11-20 11:39:02,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057589483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:39:02,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:39:02,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:39:02,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874864076] [2022-11-20 11:39:02,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:39:02,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:39:02,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:39:02,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:39:02,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:39:02,038 INFO L87 Difference]: Start difference. First operand 584 states and 958 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:39:11,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:39:11,393 INFO L93 Difference]: Finished difference Result 1439 states and 2436 transitions. [2022-11-20 11:39:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:39:11,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2022-11-20 11:39:11,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:39:11,404 INFO L225 Difference]: With dead ends: 1439 [2022-11-20 11:39:11,404 INFO L226 Difference]: Without dead ends: 847 [2022-11-20 11:39:11,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:39:11,410 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1525 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 2405 SdHoareTripleChecker+Invalid, 5787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:39:11,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 2405 Invalid, 5787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [433 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-20 11:39:11,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-11-20 11:39:11,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 578. [2022-11-20 11:39:11,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 444 states have (on average 1.6486486486486487) internal successors, (732), 462 states have internal predecessors, (732), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 11:39:11,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 945 transitions. [2022-11-20 11:39:11,552 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 945 transitions. Word has length 69 [2022-11-20 11:39:11,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:39:11,553 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 945 transitions. [2022-11-20 11:39:11,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:39:11,553 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 945 transitions. [2022-11-20 11:39:11,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-20 11:39:11,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:39:11,555 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:39:11,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:39:11,555 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:39:11,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:39:11,556 INFO L85 PathProgramCache]: Analyzing trace with hash -691110395, now seen corresponding path program 1 times [2022-11-20 11:39:11,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:39:11,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186892306] [2022-11-20 11:39:11,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:39:11,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:39:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:11,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:39:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:12,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:39:12,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:12,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:39:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:12,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:39:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:12,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:39:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:12,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:39:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:12,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:39:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:12,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-20 11:39:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:39:12,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:39:12,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186892306] [2022-11-20 11:39:12,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186892306] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:39:12,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:39:12,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:39:12,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429686545] [2022-11-20 11:39:12,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:39:12,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:39:12,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:39:12,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:39:12,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:39:12,109 INFO L87 Difference]: Start difference. First operand 578 states and 945 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:39:19,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:39:19,834 INFO L93 Difference]: Finished difference Result 1409 states and 2385 transitions. [2022-11-20 11:39:19,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:39:19,836 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 70 [2022-11-20 11:39:19,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:39:19,845 INFO L225 Difference]: With dead ends: 1409 [2022-11-20 11:39:19,845 INFO L226 Difference]: Without dead ends: 847 [2022-11-20 11:39:19,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:39:19,850 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1468 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1576 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 3149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 426 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:39:19,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1576 Valid, 1320 Invalid, 3149 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [426 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 11:39:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-11-20 11:39:19,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 578. [2022-11-20 11:39:19,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 444 states have (on average 1.6463963963963963) internal successors, (731), 462 states have internal predecessors, (731), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 11:39:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 944 transitions. [2022-11-20 11:39:20,004 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 944 transitions. Word has length 70 [2022-11-20 11:39:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:39:20,005 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 944 transitions. [2022-11-20 11:39:20,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:39:20,006 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 944 transitions. [2022-11-20 11:39:20,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 11:39:20,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:39:20,008 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:39:20,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:39:20,008 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:39:20,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:39:20,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1448488452, now seen corresponding path program 1 times [2022-11-20 11:39:20,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:39:20,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980554207] [2022-11-20 11:39:20,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:39:20,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:39:20,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:20,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:39:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:20,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:39:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:39:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:20,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:39:20,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:20,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:39:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:20,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:39:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:20,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-20 11:39:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:20,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 11:39:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:39:20,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:39:20,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980554207] [2022-11-20 11:39:20,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980554207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:39:20,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:39:20,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:39:20,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257956919] [2022-11-20 11:39:20,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:39:20,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:39:20,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:39:20,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:39:20,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:39:20,745 INFO L87 Difference]: Start difference. First operand 578 states and 944 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:39:30,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:39:30,284 INFO L93 Difference]: Finished difference Result 1427 states and 2405 transitions. [2022-11-20 11:39:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:39:30,288 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-11-20 11:39:30,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:39:30,295 INFO L225 Difference]: With dead ends: 1427 [2022-11-20 11:39:30,295 INFO L226 Difference]: Without dead ends: 841 [2022-11-20 11:39:30,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:39:30,300 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 1501 mSDsluCounter, 2003 mSDsCounter, 0 mSdLazyCounter, 5252 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 5691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 5252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:39:30,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 2422 Invalid, 5691 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [439 Valid, 5252 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-20 11:39:30,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-11-20 11:39:30,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 572. [2022-11-20 11:39:30,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 438 states have (on average 1.639269406392694) internal successors, (718), 456 states have internal predecessors, (718), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 11:39:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 931 transitions. [2022-11-20 11:39:30,440 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 931 transitions. Word has length 71 [2022-11-20 11:39:30,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:39:30,440 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 931 transitions. [2022-11-20 11:39:30,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:39:30,441 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 931 transitions. [2022-11-20 11:39:30,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-20 11:39:30,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:39:30,442 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:39:30,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:39:30,443 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:39:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:39:30,444 INFO L85 PathProgramCache]: Analyzing trace with hash -5126265, now seen corresponding path program 1 times [2022-11-20 11:39:30,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:39:30,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934907639] [2022-11-20 11:39:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:39:30,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:39:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:30,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:39:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:30,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:39:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:30,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:39:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:30,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:39:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:39:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:31,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-20 11:39:31,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:31,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 11:39:31,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:31,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-20 11:39:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:31,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:39:31,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:39:31,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934907639] [2022-11-20 11:39:31,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934907639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:39:31,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:39:31,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:39:31,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165648051] [2022-11-20 11:39:31,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:39:31,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:39:31,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:39:31,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:39:31,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:39:31,017 INFO L87 Difference]: Start difference. First operand 572 states and 931 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:39:38,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:39:38,764 INFO L93 Difference]: Finished difference Result 1397 states and 2356 transitions. [2022-11-20 11:39:38,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:39:38,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 72 [2022-11-20 11:39:38,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:39:38,772 INFO L225 Difference]: With dead ends: 1397 [2022-11-20 11:39:38,773 INFO L226 Difference]: Without dead ends: 841 [2022-11-20 11:39:38,776 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:39:38,777 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 1456 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 2678 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 3116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 2678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:39:38,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 1296 Invalid, 3116 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [438 Valid, 2678 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-20 11:39:38,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-11-20 11:39:38,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 572. [2022-11-20 11:39:38,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 438 states have (on average 1.6369863013698631) internal successors, (717), 456 states have internal predecessors, (717), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 11:39:38,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 930 transitions. [2022-11-20 11:39:38,967 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 930 transitions. Word has length 72 [2022-11-20 11:39:38,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:39:38,968 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 930 transitions. [2022-11-20 11:39:38,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:39:38,968 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 930 transitions. [2022-11-20 11:39:38,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 11:39:38,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:39:38,973 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:39:38,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:39:38,973 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:39:38,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:39:38,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1976267521, now seen corresponding path program 1 times [2022-11-20 11:39:38,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:39:38,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134239470] [2022-11-20 11:39:38,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:39:38,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:39:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:39,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:39:39,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:39,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:39:39,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:39,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:39:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:39,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:39:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:39,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:39:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:39,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:39:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:39,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:39:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:39,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:39:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:39,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:39:39,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:39:39,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134239470] [2022-11-20 11:39:39,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134239470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:39:39,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:39:39,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:39:39,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218683875] [2022-11-20 11:39:39,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:39:39,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:39:39,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:39:39,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:39:39,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:39:39,549 INFO L87 Difference]: Start difference. First operand 572 states and 930 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:39:48,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:39:48,035 INFO L93 Difference]: Finished difference Result 1418 states and 2378 transitions. [2022-11-20 11:39:48,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:39:48,036 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 73 [2022-11-20 11:39:48,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:39:48,043 INFO L225 Difference]: With dead ends: 1418 [2022-11-20 11:39:48,043 INFO L226 Difference]: Without dead ends: 862 [2022-11-20 11:39:48,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:39:48,048 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 850 mSDsluCounter, 984 mSDsCounter, 0 mSdLazyCounter, 2881 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 2881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:39:48,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [958 Valid, 1412 Invalid, 3088 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [207 Valid, 2881 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-11-20 11:39:48,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-11-20 11:39:48,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 577. [2022-11-20 11:39:48,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 443 states have (on average 1.6297968397291196) internal successors, (722), 461 states have internal predecessors, (722), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 11:39:48,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 935 transitions. [2022-11-20 11:39:48,205 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 935 transitions. Word has length 73 [2022-11-20 11:39:48,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:39:48,205 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 935 transitions. [2022-11-20 11:39:48,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:39:48,206 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 935 transitions. [2022-11-20 11:39:48,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-20 11:39:48,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:39:48,208 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:39:48,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:39:48,208 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:39:48,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:39:48,209 INFO L85 PathProgramCache]: Analyzing trace with hash 1518882784, now seen corresponding path program 1 times [2022-11-20 11:39:48,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:39:48,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740176373] [2022-11-20 11:39:48,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:39:48,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:39:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:48,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:39:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:48,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:39:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:48,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:39:48,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:48,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:39:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:48,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:39:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:48,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:39:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:48,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:39:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:48,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:39:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:48,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:39:48,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:39:48,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740176373] [2022-11-20 11:39:48,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740176373] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:39:48,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:39:48,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:39:48,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228351573] [2022-11-20 11:39:48,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:39:48,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:39:48,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:39:48,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:39:48,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:39:48,857 INFO L87 Difference]: Start difference. First operand 577 states and 935 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:39:58,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:39:58,645 INFO L93 Difference]: Finished difference Result 1420 states and 2377 transitions. [2022-11-20 11:39:58,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:39:58,645 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2022-11-20 11:39:58,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:39:58,650 INFO L225 Difference]: With dead ends: 1420 [2022-11-20 11:39:58,651 INFO L226 Difference]: Without dead ends: 835 [2022-11-20 11:39:58,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:39:58,657 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 1458 mSDsluCounter, 2034 mSDsCounter, 0 mSdLazyCounter, 5181 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 5606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 5181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:39:58,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 2460 Invalid, 5606 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [425 Valid, 5181 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-11-20 11:39:58,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-11-20 11:39:58,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 566. [2022-11-20 11:39:58,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 432 states have (on average 1.6273148148148149) internal successors, (703), 450 states have internal predecessors, (703), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 11:39:58,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 916 transitions. [2022-11-20 11:39:58,801 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 916 transitions. Word has length 73 [2022-11-20 11:39:58,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:39:58,801 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 916 transitions. [2022-11-20 11:39:58,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:39:58,802 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 916 transitions. [2022-11-20 11:39:58,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 11:39:58,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:39:58,803 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:39:58,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:39:58,804 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:39:58,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:39:58,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1024412364, now seen corresponding path program 1 times [2022-11-20 11:39:58,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:39:58,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210112432] [2022-11-20 11:39:58,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:39:58,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:39:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:59,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:39:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:59,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:39:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:59,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:39:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:59,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:39:59,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:59,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:39:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:59,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:39:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:59,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:39:59,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:59,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 11:39:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:39:59,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:39:59,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:39:59,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210112432] [2022-11-20 11:39:59,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210112432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:39:59,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:39:59,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:39:59,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749549329] [2022-11-20 11:39:59,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:39:59,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:39:59,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:39:59,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:39:59,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:39:59,405 INFO L87 Difference]: Start difference. First operand 566 states and 916 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:40:07,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:07,819 INFO L93 Difference]: Finished difference Result 1397 states and 2337 transitions. [2022-11-20 11:40:07,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:40:07,820 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-11-20 11:40:07,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:07,826 INFO L225 Difference]: With dead ends: 1397 [2022-11-20 11:40:07,827 INFO L226 Difference]: Without dead ends: 847 [2022-11-20 11:40:07,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:40:07,831 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 818 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 2827 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 3038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 2827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:07,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 1368 Invalid, 3038 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [211 Valid, 2827 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-20 11:40:07,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-11-20 11:40:08,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 572. [2022-11-20 11:40:08,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 438 states have (on average 1.6187214611872147) internal successors, (709), 456 states have internal predecessors, (709), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 11:40:08,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 922 transitions. [2022-11-20 11:40:08,009 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 922 transitions. Word has length 74 [2022-11-20 11:40:08,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:08,009 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 922 transitions. [2022-11-20 11:40:08,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-20 11:40:08,010 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 922 transitions. [2022-11-20 11:40:08,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-20 11:40:08,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:08,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:08,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:40:08,012 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:08,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:08,013 INFO L85 PathProgramCache]: Analyzing trace with hash -820954802, now seen corresponding path program 1 times [2022-11-20 11:40:08,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:08,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445163694] [2022-11-20 11:40:08,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:08,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:08,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:40:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:08,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:40:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:40:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:08,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:40:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:08,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:40:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:08,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-20 11:40:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:08,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:40:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:08,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 11:40:08,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:08,715 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:40:08,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:08,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445163694] [2022-11-20 11:40:08,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445163694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:08,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:08,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:40:08,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108288063] [2022-11-20 11:40:08,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:08,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:40:08,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:08,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:40:08,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:40:08,719 INFO L87 Difference]: Start difference. First operand 572 states and 922 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:40:18,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:18,823 INFO L93 Difference]: Finished difference Result 1400 states and 2338 transitions. [2022-11-20 11:40:18,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:40:18,824 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-11-20 11:40:18,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:18,832 INFO L225 Difference]: With dead ends: 1400 [2022-11-20 11:40:18,832 INFO L226 Difference]: Without dead ends: 835 [2022-11-20 11:40:18,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:40:18,836 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 837 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 5201 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 2406 SdHoareTripleChecker+Invalid, 5411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 5201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:18,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 2406 Invalid, 5411 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [210 Valid, 5201 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-20 11:40:18,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-11-20 11:40:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 566. [2022-11-20 11:40:18,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 432 states have (on average 1.625) internal successors, (702), 450 states have internal predecessors, (702), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-11-20 11:40:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 915 transitions. [2022-11-20 11:40:18,984 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 915 transitions. Word has length 74 [2022-11-20 11:40:18,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:18,985 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 915 transitions. [2022-11-20 11:40:18,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:40:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 915 transitions. [2022-11-20 11:40:18,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 11:40:18,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:18,987 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:18,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:40:18,987 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:18,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:18,988 INFO L85 PathProgramCache]: Analyzing trace with hash -931862683, now seen corresponding path program 1 times [2022-11-20 11:40:18,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:18,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353961] [2022-11-20 11:40:18,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:18,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:19,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:19,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:40:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:19,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:40:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:19,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:40:19,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:19,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:40:19,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:19,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:40:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:19,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:40:19,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:40:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:19,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:40:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:40:19,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:19,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353961] [2022-11-20 11:40:19,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:19,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:19,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:40:19,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487228159] [2022-11-20 11:40:19,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:19,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:40:19,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:19,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:40:19,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:40:19,639 INFO L87 Difference]: Start difference. First operand 566 states and 915 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 11:40:35,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:35,996 INFO L93 Difference]: Finished difference Result 2158 states and 3662 transitions. [2022-11-20 11:40:35,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:40:35,997 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2022-11-20 11:40:35,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:36,014 INFO L225 Difference]: With dead ends: 2158 [2022-11-20 11:40:36,014 INFO L226 Difference]: Without dead ends: 1610 [2022-11-20 11:40:36,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:40:36,019 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 3236 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 5824 mSolverCounterSat, 1177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3374 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 7001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1177 IncrementalHoareTripleChecker+Valid, 5824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:36,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3374 Valid, 2075 Invalid, 7001 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1177 Valid, 5824 Invalid, 0 Unknown, 0 Unchecked, 14.4s Time] [2022-11-20 11:40:36,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2022-11-20 11:40:36,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1224. [2022-11-20 11:40:36,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 896 states have (on average 1.578125) internal successors, (1414), 950 states have internal predecessors, (1414), 273 states have call successors, (273), 51 states have call predecessors, (273), 54 states have return successors, (347), 265 states have call predecessors, (347), 269 states have call successors, (347) [2022-11-20 11:40:36,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 2034 transitions. [2022-11-20 11:40:36,505 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 2034 transitions. Word has length 75 [2022-11-20 11:40:36,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:36,507 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 2034 transitions. [2022-11-20 11:40:36,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-20 11:40:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 2034 transitions. [2022-11-20 11:40:36,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-20 11:40:36,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:36,512 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:36,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:40:36,512 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:36,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:36,513 INFO L85 PathProgramCache]: Analyzing trace with hash 461032549, now seen corresponding path program 1 times [2022-11-20 11:40:36,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:36,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735769163] [2022-11-20 11:40:36,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:36,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:36,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:40:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:37,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:40:37,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:37,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:40:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:37,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:40:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:37,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:40:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:37,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:40:37,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:37,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:40:37,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:37,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-20 11:40:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:37,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:40:37,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:37,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735769163] [2022-11-20 11:40:37,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735769163] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:40:37,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271213001] [2022-11-20 11:40:37,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:37,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:37,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:40:37,179 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:40:37,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:40:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:37,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:40:37,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:40:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:37,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:40:37,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271213001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:37,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:40:37,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-20 11:40:37,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303297812] [2022-11-20 11:40:37,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:37,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:40:37,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:37,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:40:37,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:40:37,777 INFO L87 Difference]: Start difference. First operand 1224 states and 2034 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:40:38,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:38,880 INFO L93 Difference]: Finished difference Result 3544 states and 5964 transitions. [2022-11-20 11:40:38,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:40:38,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2022-11-20 11:40:38,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:38,905 INFO L225 Difference]: With dead ends: 3544 [2022-11-20 11:40:38,905 INFO L226 Difference]: Without dead ends: 2338 [2022-11-20 11:40:38,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:40:38,915 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 879 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:38,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 1870 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:40:38,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-11-20 11:40:39,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 2277. [2022-11-20 11:40:39,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1670 states have (on average 1.592814371257485) internal successors, (2660), 1778 states have internal predecessors, (2660), 503 states have call successors, (503), 92 states have call predecessors, (503), 103 states have return successors, (664), 492 states have call predecessors, (664), 499 states have call successors, (664) [2022-11-20 11:40:39,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3827 transitions. [2022-11-20 11:40:39,895 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3827 transitions. Word has length 75 [2022-11-20 11:40:39,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:39,895 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 3827 transitions. [2022-11-20 11:40:39,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:40:39,896 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3827 transitions. [2022-11-20 11:40:39,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 11:40:39,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:39,897 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:39,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:40:40,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 11:40:40,106 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:40,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:40,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1788067737, now seen corresponding path program 1 times [2022-11-20 11:40:40,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:40,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65569752] [2022-11-20 11:40:40,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:40,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:40,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:40:40,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:40,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:40:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:40,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:40:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:40,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:40:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:40,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:40:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:40,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:40:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:40,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:40:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:40,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:40:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:40,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 11:40:40,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:40,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65569752] [2022-11-20 11:40:40,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65569752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:40:40,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941531866] [2022-11-20 11:40:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:40,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:40:40,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:40:40,792 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:40:40,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:40:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:41,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:40:41,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:40:41,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:40:41,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:40:41,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941531866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:41,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:40:41,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-11-20 11:40:41,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110762895] [2022-11-20 11:40:41,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:41,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:40:41,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:41,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:40:41,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:40:41,333 INFO L87 Difference]: Start difference. First operand 2277 states and 3827 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:40:42,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:40:42,412 INFO L93 Difference]: Finished difference Result 5185 states and 8787 transitions. [2022-11-20 11:40:42,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:40:42,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-11-20 11:40:42,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:40:42,441 INFO L225 Difference]: With dead ends: 5185 [2022-11-20 11:40:42,441 INFO L226 Difference]: Without dead ends: 2926 [2022-11-20 11:40:42,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:40:42,458 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 877 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:40:42,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1806 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:40:42,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2022-11-20 11:40:43,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2718. [2022-11-20 11:40:43,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2013 states have (on average 1.6055638350720318) internal successors, (3232), 2138 states have internal predecessors, (3232), 581 states have call successors, (581), 111 states have call predecessors, (581), 123 states have return successors, (746), 568 states have call predecessors, (746), 577 states have call successors, (746) [2022-11-20 11:40:43,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 4559 transitions. [2022-11-20 11:40:43,534 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 4559 transitions. Word has length 76 [2022-11-20 11:40:43,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:40:43,535 INFO L495 AbstractCegarLoop]: Abstraction has 2718 states and 4559 transitions. [2022-11-20 11:40:43,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:40:43,535 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 4559 transitions. [2022-11-20 11:40:43,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-20 11:40:43,536 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:40:43,536 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:40:43,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:40:43,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c06cc034-11f8-45b4-b68c-db58b5ee2edc/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:40:43,738 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:40:43,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:40:43,738 INFO L85 PathProgramCache]: Analyzing trace with hash -13813102, now seen corresponding path program 1 times [2022-11-20 11:40:43,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:40:43,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155232092] [2022-11-20 11:40:43,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:40:43,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:40:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:44,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:40:44,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:44,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:40:44,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:44,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:40:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:44,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:40:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:44,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:40:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:44,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:40:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:44,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:40:44,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:44,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:40:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:44,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-20 11:40:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:40:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:40:44,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:40:44,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155232092] [2022-11-20 11:40:44,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155232092] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:40:44,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:40:44,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:40:44,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740724313] [2022-11-20 11:40:44,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:40:44,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:40:44,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:40:44,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:40:44,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:40:44,502 INFO L87 Difference]: Start difference. First operand 2718 states and 4559 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 11:41:05,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:05,677 INFO L93 Difference]: Finished difference Result 10012 states and 17830 transitions. [2022-11-20 11:41:05,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:41:05,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2022-11-20 11:41:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:05,749 INFO L225 Difference]: With dead ends: 10012 [2022-11-20 11:41:05,749 INFO L226 Difference]: Without dead ends: 7312 [2022-11-20 11:41:05,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:41:05,771 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 3657 mSDsluCounter, 1933 mSDsCounter, 0 mSdLazyCounter, 6076 mSolverCounterSat, 1258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3800 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 7334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1258 IncrementalHoareTripleChecker+Valid, 6076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:05,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3800 Valid, 2490 Invalid, 7334 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1258 Valid, 6076 Invalid, 0 Unknown, 0 Unchecked, 16.5s Time] [2022-11-20 11:41:05,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7312 states. [2022-11-20 11:41:07,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7312 to 6047. [2022-11-20 11:41:07,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6047 states, 4351 states have (on average 1.5835440128706044) internal successors, (6890), 4696 states have internal predecessors, (6890), 1402 states have call successors, (1402), 216 states have call predecessors, (1402), 293 states have return successors, (2343), 1400 states have call predecessors, (2343), 1396 states have call successors, (2343) [2022-11-20 11:41:07,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6047 states to 6047 states and 10635 transitions. [2022-11-20 11:41:07,901 INFO L78 Accepts]: Start accepts. Automaton has 6047 states and 10635 transitions. Word has length 78 [2022-11-20 11:41:07,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:07,902 INFO L495 AbstractCegarLoop]: Abstraction has 6047 states and 10635 transitions. [2022-11-20 11:41:07,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-20 11:41:07,902 INFO L276 IsEmpty]: Start isEmpty. Operand 6047 states and 10635 transitions. [2022-11-20 11:41:07,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-20 11:41:07,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:07,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:07,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:41:07,904 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:07,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:07,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1593721713, now seen corresponding path program 1 times [2022-11-20 11:41:07,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:07,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653422888] [2022-11-20 11:41:07,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:07,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:08,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:41:08,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:08,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:41:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:08,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:41:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:08,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:41:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:08,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:41:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:08,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:41:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:08,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:41:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:08,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:41:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:08,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 11:41:08,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:08,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 11:41:08,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:08,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653422888] [2022-11-20 11:41:08,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653422888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:08,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:08,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:41:08,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789154392] [2022-11-20 11:41:08,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:08,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:41:08,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:08,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:41:08,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:41:08,359 INFO L87 Difference]: Start difference. First operand 6047 states and 10635 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 11:41:19,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:19,495 INFO L93 Difference]: Finished difference Result 13049 states and 23272 transitions. [2022-11-20 11:41:19,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:41:19,496 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2022-11-20 11:41:19,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:19,557 INFO L225 Difference]: With dead ends: 13049 [2022-11-20 11:41:19,557 INFO L226 Difference]: Without dead ends: 7020 [2022-11-20 11:41:19,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:41:19,589 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1363 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 3079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:19,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 1522 Invalid, 3079 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [392 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-20 11:41:19,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7020 states. [2022-11-20 11:41:22,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7020 to 6055. [2022-11-20 11:41:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6055 states, 4357 states have (on average 1.5822813862749598) internal successors, (6894), 4702 states have internal predecessors, (6894), 1402 states have call successors, (1402), 220 states have call predecessors, (1402), 295 states have return successors, (2333), 1398 states have call predecessors, (2333), 1396 states have call successors, (2333) [2022-11-20 11:41:22,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 10629 transitions. [2022-11-20 11:41:22,261 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 10629 transitions. Word has length 79 [2022-11-20 11:41:22,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:22,262 INFO L495 AbstractCegarLoop]: Abstraction has 6055 states and 10629 transitions. [2022-11-20 11:41:22,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-20 11:41:22,264 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 10629 transitions. [2022-11-20 11:41:22,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 11:41:22,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:22,266 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:22,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:41:22,267 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:22,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:22,268 INFO L85 PathProgramCache]: Analyzing trace with hash -650455551, now seen corresponding path program 1 times [2022-11-20 11:41:22,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:22,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676532325] [2022-11-20 11:41:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:22,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:22,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:41:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:22,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:41:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:22,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:41:22,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:22,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:41:22,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:22,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:41:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:22,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:41:22,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:22,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:41:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:22,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:41:22,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:22,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:41:22,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:22,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-20 11:41:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:41:22,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:22,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676532325] [2022-11-20 11:41:22,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676532325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:22,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:22,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:41:22,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681328886] [2022-11-20 11:41:22,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:22,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:41:22,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:22,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:41:22,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:41:22,930 INFO L87 Difference]: Start difference. First operand 6055 states and 10629 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:41:48,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:41:48,440 INFO L93 Difference]: Finished difference Result 20704 states and 38900 transitions. [2022-11-20 11:41:48,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:41:48,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2022-11-20 11:41:48,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:41:48,591 INFO L225 Difference]: With dead ends: 20704 [2022-11-20 11:41:48,591 INFO L226 Difference]: Without dead ends: 14667 [2022-11-20 11:41:48,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:41:48,648 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 3621 mSDsluCounter, 2028 mSDsCounter, 0 mSdLazyCounter, 5982 mSolverCounterSat, 1241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3763 SdHoareTripleChecker+Valid, 2620 SdHoareTripleChecker+Invalid, 7223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1241 IncrementalHoareTripleChecker+Valid, 5982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:41:48,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3763 Valid, 2620 Invalid, 7223 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1241 Valid, 5982 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2022-11-20 11:41:48,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14667 states. [2022-11-20 11:41:53,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14667 to 12004. [2022-11-20 11:41:53,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12004 states, 8635 states have (on average 1.5792704111175448) internal successors, (13637), 9320 states have internal predecessors, (13637), 2779 states have call successors, (2779), 434 states have call predecessors, (2779), 589 states have return successors, (5226), 2781 states have call predecessors, (5226), 2769 states have call successors, (5226) [2022-11-20 11:41:53,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12004 states to 12004 states and 21642 transitions. [2022-11-20 11:41:53,346 INFO L78 Accepts]: Start accepts. Automaton has 12004 states and 21642 transitions. Word has length 87 [2022-11-20 11:41:53,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:41:53,347 INFO L495 AbstractCegarLoop]: Abstraction has 12004 states and 21642 transitions. [2022-11-20 11:41:53,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-20 11:41:53,348 INFO L276 IsEmpty]: Start isEmpty. Operand 12004 states and 21642 transitions. [2022-11-20 11:41:53,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 11:41:53,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:41:53,350 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:41:53,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:41:53,351 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:41:53,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:41:53,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1775026134, now seen corresponding path program 1 times [2022-11-20 11:41:53,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:41:53,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656657038] [2022-11-20 11:41:53,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:41:53,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:41:53,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:53,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:41:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:53,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:41:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:53,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:41:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:41:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:53,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:41:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:53,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:41:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:41:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:41:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:53,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:41:53,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:53,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-11-20 11:41:53,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:41:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 11:41:53,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:41:53,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656657038] [2022-11-20 11:41:53,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656657038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:41:53,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:41:53,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:41:53,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563201347] [2022-11-20 11:41:53,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:41:53,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:41:53,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:41:53,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:41:53,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:41:53,852 INFO L87 Difference]: Start difference. First operand 12004 states and 21642 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 11:42:08,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:42:08,443 INFO L93 Difference]: Finished difference Result 25897 states and 47846 transitions. [2022-11-20 11:42:08,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:42:08,444 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-11-20 11:42:08,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:42:08,593 INFO L225 Difference]: With dead ends: 25897 [2022-11-20 11:42:08,594 INFO L226 Difference]: Without dead ends: 13911 [2022-11-20 11:42:08,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:42:08,690 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 822 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 2818 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 3014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 2818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:42:08,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 1558 Invalid, 3014 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [196 Valid, 2818 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-11-20 11:42:08,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13911 states. [2022-11-20 11:42:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13911 to 12044. [2022-11-20 11:42:14,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12044 states, 8671 states have (on average 1.5773267212547573) internal successors, (13677), 9348 states have internal predecessors, (13677), 2779 states have call successors, (2779), 450 states have call predecessors, (2779), 593 states have return successors, (5212), 2777 states have call predecessors, (5212), 2769 states have call successors, (5212) [2022-11-20 11:42:14,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12044 states to 12044 states and 21668 transitions. [2022-11-20 11:42:14,245 INFO L78 Accepts]: Start accepts. Automaton has 12044 states and 21668 transitions. Word has length 88 [2022-11-20 11:42:14,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:42:14,246 INFO L495 AbstractCegarLoop]: Abstraction has 12044 states and 21668 transitions. [2022-11-20 11:42:14,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-20 11:42:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 12044 states and 21668 transitions. [2022-11-20 11:42:14,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-20 11:42:14,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:42:14,250 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:42:14,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:42:14,251 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:42:14,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:14,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1227574607, now seen corresponding path program 1 times [2022-11-20 11:42:14,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:14,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18575138] [2022-11-20 11:42:14,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:14,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:14,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:14,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:42:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:14,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:42:14,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:14,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:42:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:14,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:42:14,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:14,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:42:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:14,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:42:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:14,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:42:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:14,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:42:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:14,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:42:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:14,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:42:14,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:14,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-20 11:42:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-20 11:42:14,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:14,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18575138] [2022-11-20 11:42:14,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18575138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:14,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:14,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:42:14,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026848966] [2022-11-20 11:42:14,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:14,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:42:14,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:14,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:42:14,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:42:14,885 INFO L87 Difference]: Start difference. First operand 12044 states and 21668 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-20 11:42:47,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:42:47,771 INFO L93 Difference]: Finished difference Result 41376 states and 83780 transitions. [2022-11-20 11:42:47,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:42:47,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-11-20 11:42:47,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:42:48,099 INFO L225 Difference]: With dead ends: 41376 [2022-11-20 11:42:48,099 INFO L226 Difference]: Without dead ends: 29350 [2022-11-20 11:42:48,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:42:48,224 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 2483 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 6332 mSolverCounterSat, 821 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2625 SdHoareTripleChecker+Valid, 2654 SdHoareTripleChecker+Invalid, 7153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 821 IncrementalHoareTripleChecker+Valid, 6332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:42:48,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2625 Valid, 2654 Invalid, 7153 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [821 Valid, 6332 Invalid, 0 Unknown, 0 Unchecked, 18.6s Time] [2022-11-20 11:42:48,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29350 states. [2022-11-20 11:42:57,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29350 to 24023. [2022-11-20 11:42:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24023 states, 17295 states have (on average 1.5746747614917607) internal successors, (27234), 18644 states have internal predecessors, (27234), 5538 states have call successors, (5538), 894 states have call predecessors, (5538), 1189 states have return successors, (12117), 5548 states have call predecessors, (12117), 5520 states have call successors, (12117) [2022-11-20 11:42:58,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24023 states to 24023 states and 44889 transitions. [2022-11-20 11:42:58,088 INFO L78 Accepts]: Start accepts. Automaton has 24023 states and 44889 transitions. Word has length 97 [2022-11-20 11:42:58,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:42:58,089 INFO L495 AbstractCegarLoop]: Abstraction has 24023 states and 44889 transitions. [2022-11-20 11:42:58,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-20 11:42:58,089 INFO L276 IsEmpty]: Start isEmpty. Operand 24023 states and 44889 transitions. [2022-11-20 11:42:58,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-20 11:42:58,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:42:58,092 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:42:58,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:42:58,092 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:42:58,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:42:58,093 INFO L85 PathProgramCache]: Analyzing trace with hash -203367196, now seen corresponding path program 1 times [2022-11-20 11:42:58,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:42:58,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518851551] [2022-11-20 11:42:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:42:58,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:42:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:58,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:42:58,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:58,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:42:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:58,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:42:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:58,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:42:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:58,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:42:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:58,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:42:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:58,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:42:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:58,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:42:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:58,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:42:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:58,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:42:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:58,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-20 11:42:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:42:58,561 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-20 11:42:58,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:42:58,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518851551] [2022-11-20 11:42:58,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518851551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:42:58,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:42:58,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:42:58,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195403147] [2022-11-20 11:42:58,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:42:58,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:42:58,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:42:58,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:42:58,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:42:58,565 INFO L87 Difference]: Start difference. First operand 24023 states and 44889 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 11:43:18,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:43:18,178 INFO L93 Difference]: Finished difference Result 51819 states and 101298 transitions. [2022-11-20 11:43:18,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:43:18,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2022-11-20 11:43:18,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:43:18,441 INFO L225 Difference]: With dead ends: 51819 [2022-11-20 11:43:18,441 INFO L226 Difference]: Without dead ends: 27814 [2022-11-20 11:43:18,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:43:18,650 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1384 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 2687 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 3085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 2687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:43:18,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 1502 Invalid, 3085 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [398 Valid, 2687 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-20 11:43:18,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27814 states. [2022-11-20 11:43:27,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27814 to 24103. [2022-11-20 11:43:27,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24103 states, 17367 states have (on average 1.5727529222087868) internal successors, (27314), 18716 states have internal predecessors, (27314), 5538 states have call successors, (5538), 910 states have call predecessors, (5538), 1197 states have return successors, (12101), 5540 states have call predecessors, (12101), 5520 states have call successors, (12101) [2022-11-20 11:43:27,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24103 states to 24103 states and 44953 transitions. [2022-11-20 11:43:27,611 INFO L78 Accepts]: Start accepts. Automaton has 24103 states and 44953 transitions. Word has length 98 [2022-11-20 11:43:27,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:43:27,612 INFO L495 AbstractCegarLoop]: Abstraction has 24103 states and 44953 transitions. [2022-11-20 11:43:27,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-20 11:43:27,613 INFO L276 IsEmpty]: Start isEmpty. Operand 24103 states and 44953 transitions. [2022-11-20 11:43:27,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-20 11:43:27,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:43:27,618 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:43:27,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:43:27,618 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:43:27,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:43:27,619 INFO L85 PathProgramCache]: Analyzing trace with hash 770009700, now seen corresponding path program 1 times [2022-11-20 11:43:27,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:43:27,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136862188] [2022-11-20 11:43:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:43:27,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:43:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:27,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:43:28,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 11:43:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:43:28,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 11:43:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:43:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-20 11:43:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 11:43:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:43:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-20 11:43:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-20 11:43:28,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 11:43:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:43:28,215 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-20 11:43:28,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:43:28,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136862188] [2022-11-20 11:43:28,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136862188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:43:28,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:43:28,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:43:28,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955827900] [2022-11-20 11:43:28,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:43:28,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:43:28,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:43:28,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:43:28,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:43:28,219 INFO L87 Difference]: Start difference. First operand 24103 states and 44953 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-20 11:44:10,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:44:10,904 INFO L93 Difference]: Finished difference Result 82076 states and 183786 transitions. [2022-11-20 11:44:10,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:44:10,905 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2022-11-20 11:44:10,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:44:12,099 INFO L225 Difference]: With dead ends: 82076 [2022-11-20 11:44:12,099 INFO L226 Difference]: Without dead ends: 57991 [2022-11-20 11:44:12,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-11-20 11:44:12,496 INFO L413 NwaCegarLoop]: 646 mSDtfsCounter, 3524 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 6105 mSolverCounterSat, 1191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3665 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 7296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1191 IncrementalHoareTripleChecker+Valid, 6105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:44:12,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3665 Valid, 2840 Invalid, 7296 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1191 Valid, 6105 Invalid, 0 Unknown, 0 Unchecked, 16.3s Time] [2022-11-20 11:44:12,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57991 states.