./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec8_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec8_product33.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8 --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 110ae467dd0e6a723852f1756a5d5c5e6a5ea34b8ae8b082c6ae77d9e8e89434 --- 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-2329fc7 [2022-12-13 15:19:43,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:19:43,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:19:43,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:19:43,924 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:19:43,925 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:19:43,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:19:43,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:19:43,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:19:43,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:19:43,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:19:43,933 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:19:43,933 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:19:43,934 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:19:43,935 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:19:43,936 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:19:43,937 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:19:43,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:19:43,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:19:43,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:19:43,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:19:43,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:19:43,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:19:43,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:19:43,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:19:43,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:19:43,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:19:43,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:19:43,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:19:43,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:19:43,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:19:43,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:19:43,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:19:43,954 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:19:43,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:19:43,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:19:43,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:19:43,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:19:43,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:19:43,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:19:43,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:19:43,959 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:19:43,979 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:19:43,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:19:43,980 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:19:43,980 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:19:43,981 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:19:43,981 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:19:43,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:19:43,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:19:43,982 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:19:43,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:19:43,982 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:19:43,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:19:43,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:19:43,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:19:43,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:19:43,983 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:19:43,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:19:43,984 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:19:43,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:19:43,984 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:19:43,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:19:43,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:19:43,985 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:19:43,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:19:43,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:19:43,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:19:43,986 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:19:43,986 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:19:43,986 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:19:43,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:19:43,986 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:19:43,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:19:43,987 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:19:43,987 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:19:43,987 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:19:43,987 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 110ae467dd0e6a723852f1756a5d5c5e6a5ea34b8ae8b082c6ae77d9e8e89434 [2022-12-13 15:19:44,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:19:44,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:19:44,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:19:44,180 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:19:44,180 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:19:44,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/email_spec8_product33.cil.c [2022-12-13 15:19:46,722 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:19:46,975 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:19:46,975 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/sv-benchmarks/c/product-lines/email_spec8_product33.cil.c [2022-12-13 15:19:46,994 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/data/40e743dae/69f8e538b83e4fb7828a0514f37c3a36/FLAG1a726cc8a [2022-12-13 15:19:47,005 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/data/40e743dae/69f8e538b83e4fb7828a0514f37c3a36 [2022-12-13 15:19:47,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:19:47,008 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:19:47,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:19:47,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:19:47,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:19:47,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:19:47" (1/1) ... [2022-12-13 15:19:47,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@668078d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:47, skipping insertion in model container [2022-12-13 15:19:47,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:19:47" (1/1) ... [2022-12-13 15:19:47,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:19:47,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:19:47,277 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/sv-benchmarks/c/product-lines/email_spec8_product33.cil.c[11621,11634] [2022-12-13 15:19:47,418 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,421 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,472 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,474 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,476 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,501 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,507 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,519 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,521 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,541 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:19:47,553 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:19:47,580 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_5e74bd67-b5e8-475a-afa2-af9946d637b4/sv-benchmarks/c/product-lines/email_spec8_product33.cil.c[11621,11634] [2022-12-13 15:19:47,610 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,611 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,617 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,617 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,619 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,624 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,626 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,631 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,633 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 15:19:47,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:19:47,666 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:19:47,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:47 WrapperNode [2022-12-13 15:19:47,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:19:47,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:19:47,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:19:47,667 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:19:47,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:47" (1/1) ... [2022-12-13 15:19:47,696 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:47" (1/1) ... [2022-12-13 15:19:47,736 INFO L138 Inliner]: procedures = 135, calls = 233, calls flagged for inlining = 66, calls inlined = 61, statements flattened = 1084 [2022-12-13 15:19:47,736 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:19:47,737 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:19:47,737 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:19:47,737 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:19:47,743 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:47" (1/1) ... [2022-12-13 15:19:47,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:47" (1/1) ... [2022-12-13 15:19:47,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:47" (1/1) ... [2022-12-13 15:19:47,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:47" (1/1) ... [2022-12-13 15:19:47,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:47" (1/1) ... [2022-12-13 15:19:47,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:47" (1/1) ... [2022-12-13 15:19:47,768 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:47" (1/1) ... [2022-12-13 15:19:47,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:47" (1/1) ... [2022-12-13 15:19:47,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:19:47,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:19:47,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:19:47,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:19:47,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:47" (1/1) ... [2022-12-13 15:19:47,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:19:47,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:19:47,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:19:47,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:19:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-13 15:19:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-13 15:19:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-13 15:19:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-13 15:19:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-13 15:19:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-13 15:19:47,834 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-13 15:19:47,834 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-13 15:19:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-13 15:19:47,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-13 15:19:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-13 15:19:47,835 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-13 15:19:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-13 15:19:47,835 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-13 15:19:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-13 15:19:47,835 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-13 15:19:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-13 15:19:47,835 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-13 15:19:47,835 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-13 15:19:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-13 15:19:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-13 15:19:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-13 15:19:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-13 15:19:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-12-13 15:19:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-12-13 15:19:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-13 15:19:47,836 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-13 15:19:47,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:19:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-13 15:19:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-13 15:19:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-13 15:19:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-13 15:19:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-13 15:19:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-13 15:19:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-13 15:19:47,837 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-13 15:19:47,837 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-13 15:19:47,838 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-13 15:19:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-13 15:19:47,838 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-13 15:19:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-13 15:19:47,838 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-13 15:19:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-13 15:19:47,838 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-13 15:19:47,838 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-13 15:19:47,838 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-13 15:19:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-13 15:19:47,839 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-13 15:19:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:19:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-13 15:19:47,839 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-13 15:19:47,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:19:47,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:19:48,007 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:19:48,009 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:19:48,568 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:19:48,578 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:19:48,578 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 15:19:48,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:19:48 BoogieIcfgContainer [2022-12-13 15:19:48,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:19:48,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:19:48,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:19:48,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:19:48,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:19:47" (1/3) ... [2022-12-13 15:19:48,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f74619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:19:48, skipping insertion in model container [2022-12-13 15:19:48,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:19:47" (2/3) ... [2022-12-13 15:19:48,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f74619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:19:48, skipping insertion in model container [2022-12-13 15:19:48,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:19:48" (3/3) ... [2022-12-13 15:19:48,589 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec8_product33.cil.c [2022-12-13 15:19:48,604 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:19:48,605 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:19:48,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:19:48,660 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;@b129448, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:19:48,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 15:19:48,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 389 states, 300 states have (on average 1.5) internal successors, (450), 304 states have internal predecessors, (450), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-12-13 15:19:48,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 15:19:48,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:48,680 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:19:48,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:48,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:48,684 INFO L85 PathProgramCache]: Analyzing trace with hash 827259601, now seen corresponding path program 1 times [2022-12-13 15:19:48,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:48,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793378804] [2022-12-13 15:19:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:48,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:49,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:19:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:49,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:19:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:49,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:19:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:49,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 15:19:49,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:49,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 15:19:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:49,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 15:19:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:49,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:19:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:49,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 15:19:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:49,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 15:19:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:49,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 15:19:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:49,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 15:19:49,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:49,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 15:19:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:49,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 15:19:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:49,263 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 15:19:49,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:49,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793378804] [2022-12-13 15:19:49,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793378804] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:19:49,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507304328] [2022-12-13 15:19:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:49,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:49,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:19:49,266 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:19:49,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:19:49,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:49,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 15:19:49,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:19:49,515 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 15:19:49,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:19:49,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507304328] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:49,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:19:49,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-12-13 15:19:49,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287881445] [2022-12-13 15:19:49,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:49,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:19:49,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:49,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:19:49,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:19:49,544 INFO L87 Difference]: Start difference. First operand has 389 states, 300 states have (on average 1.5) internal successors, (450), 304 states have internal predecessors, (450), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:19:49,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:49,588 INFO L93 Difference]: Finished difference Result 619 states and 898 transitions. [2022-12-13 15:19:49,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:19:49,590 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 101 [2022-12-13 15:19:49,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:49,598 INFO L225 Difference]: With dead ends: 619 [2022-12-13 15:19:49,599 INFO L226 Difference]: Without dead ends: 382 [2022-12-13 15:19:49,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:19:49,605 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:49,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:19:49,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-12-13 15:19:49,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-12-13 15:19:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 294 states have (on average 1.4931972789115646) internal successors, (439), 297 states have internal predecessors, (439), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-12-13 15:19:49,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 564 transitions. [2022-12-13 15:19:49,650 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 564 transitions. Word has length 101 [2022-12-13 15:19:49,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:49,651 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 564 transitions. [2022-12-13 15:19:49,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:19:49,651 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 564 transitions. [2022-12-13 15:19:49,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 15:19:49,654 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:49,654 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:19:49,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:19:49,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 15:19:49,856 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:49,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:49,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1955888924, now seen corresponding path program 1 times [2022-12-13 15:19:49,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:49,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069876359] [2022-12-13 15:19:49,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:49,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:19:50,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:19:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:19:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 15:19:50,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 15:19:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 15:19:50,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 15:19:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 15:19:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 15:19:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 15:19:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:19:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 15:19:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 15:19:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-12-13 15:19:50,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:50,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069876359] [2022-12-13 15:19:50,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069876359] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:19:50,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035985315] [2022-12-13 15:19:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:50,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:50,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:19:50,191 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:19:50,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:19:50,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 1067 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:19:50,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:19:50,408 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 15:19:50,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:19:50,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035985315] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:50,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:19:50,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-12-13 15:19:50,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151217712] [2022-12-13 15:19:50,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:50,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:19:50,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:50,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:19:50,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:19:50,410 INFO L87 Difference]: Start difference. First operand 382 states and 564 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:19:50,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:50,447 INFO L93 Difference]: Finished difference Result 609 states and 879 transitions. [2022-12-13 15:19:50,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:19:50,448 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 102 [2022-12-13 15:19:50,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:50,450 INFO L225 Difference]: With dead ends: 609 [2022-12-13 15:19:50,450 INFO L226 Difference]: Without dead ends: 385 [2022-12-13 15:19:50,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:19:50,452 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 1 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:50,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1122 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:19:50,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-12-13 15:19:50,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 384. [2022-12-13 15:19:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 296 states have (on average 1.489864864864865) internal successors, (441), 299 states have internal predecessors, (441), 63 states have call successors, (63), 24 states have call predecessors, (63), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-12-13 15:19:50,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 566 transitions. [2022-12-13 15:19:50,479 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 566 transitions. Word has length 102 [2022-12-13 15:19:50,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:50,479 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 566 transitions. [2022-12-13 15:19:50,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:19:50,480 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 566 transitions. [2022-12-13 15:19:50,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-12-13 15:19:50,482 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:50,482 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:19:50,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:19:50,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:50,684 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:50,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:50,686 INFO L85 PathProgramCache]: Analyzing trace with hash -745029444, now seen corresponding path program 1 times [2022-12-13 15:19:50,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:50,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710345121] [2022-12-13 15:19:50,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:50,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:50,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:19:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:19:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:19:50,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 15:19:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 15:19:50,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 15:19:50,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 15:19:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:50,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 15:19:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 15:19:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 15:19:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 15:19:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 15:19:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 15:19:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,012 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 15:19:51,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:51,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710345121] [2022-12-13 15:19:51,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710345121] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:19:51,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728138949] [2022-12-13 15:19:51,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:51,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:51,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:19:51,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:19:51,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:19:51,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 1094 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:19:51,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:19:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 15:19:51,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:19:51,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728138949] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:51,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:19:51,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-12-13 15:19:51,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857620707] [2022-12-13 15:19:51,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:51,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:19:51,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:51,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:19:51,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:19:51,215 INFO L87 Difference]: Start difference. First operand 384 states and 566 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:19:51,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:51,245 INFO L93 Difference]: Finished difference Result 803 states and 1199 transitions. [2022-12-13 15:19:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:19:51,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2022-12-13 15:19:51,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:51,251 INFO L225 Difference]: With dead ends: 803 [2022-12-13 15:19:51,251 INFO L226 Difference]: Without dead ends: 446 [2022-12-13 15:19:51,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:19:51,253 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 115 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:51,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 1096 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:19:51,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-12-13 15:19:51,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 438. [2022-12-13 15:19:51,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 339 states have (on average 1.5073746312684366) internal successors, (511), 342 states have internal predecessors, (511), 74 states have call successors, (74), 24 states have call predecessors, (74), 24 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-12-13 15:19:51,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 658 transitions. [2022-12-13 15:19:51,272 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 658 transitions. Word has length 111 [2022-12-13 15:19:51,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:51,272 INFO L495 AbstractCegarLoop]: Abstraction has 438 states and 658 transitions. [2022-12-13 15:19:51,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:19:51,272 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 658 transitions. [2022-12-13 15:19:51,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-12-13 15:19:51,274 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:51,274 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:19:51,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:19:51,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-12-13 15:19:51,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:51,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:51,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1339832561, now seen corresponding path program 1 times [2022-12-13 15:19:51,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:51,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059094605] [2022-12-13 15:19:51,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:51,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:51,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:19:51,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:19:51,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:19:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 15:19:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 15:19:51,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 15:19:51,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 15:19:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 15:19:51,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 15:19:51,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 15:19:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 15:19:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 15:19:51,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 15:19:51,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,652 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 15:19:51,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:51,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059094605] [2022-12-13 15:19:51,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059094605] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:19:51,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226445265] [2022-12-13 15:19:51,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:51,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:51,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:19:51,654 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:19:51,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:19:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:51,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 1101 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 15:19:51,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:19:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 15:19:51,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:19:51,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226445265] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:51,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:19:51,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-12-13 15:19:51,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567474874] [2022-12-13 15:19:51,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:51,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:19:51,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:51,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:19:51,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:19:51,931 INFO L87 Difference]: Start difference. First operand 438 states and 658 transitions. Second operand has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 15:19:52,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:52,002 INFO L93 Difference]: Finished difference Result 867 states and 1306 transitions. [2022-12-13 15:19:52,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:19:52,003 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 112 [2022-12-13 15:19:52,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:52,006 INFO L225 Difference]: With dead ends: 867 [2022-12-13 15:19:52,006 INFO L226 Difference]: Without dead ends: 440 [2022-12-13 15:19:52,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:19:52,009 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 133 mSDsluCounter, 1512 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2067 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:52,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 2067 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:19:52,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-12-13 15:19:52,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2022-12-13 15:19:52,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 340 states have (on average 1.5058823529411764) internal successors, (512), 344 states have internal predecessors, (512), 74 states have call successors, (74), 24 states have call predecessors, (74), 25 states have return successors, (75), 73 states have call predecessors, (75), 73 states have call successors, (75) [2022-12-13 15:19:52,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 661 transitions. [2022-12-13 15:19:52,032 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 661 transitions. Word has length 112 [2022-12-13 15:19:52,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:52,033 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 661 transitions. [2022-12-13 15:19:52,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.25) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 15:19:52,033 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 661 transitions. [2022-12-13 15:19:52,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-12-13 15:19:52,035 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:52,036 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:19:52,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 15:19:52,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:52,236 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:52,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:52,237 INFO L85 PathProgramCache]: Analyzing trace with hash -345346834, now seen corresponding path program 1 times [2022-12-13 15:19:52,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:52,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623496698] [2022-12-13 15:19:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:52,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:52,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:52,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:19:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:52,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:19:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:52,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:19:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:52,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:19:52,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:52,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 15:19:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:52,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 15:19:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:52,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 15:19:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:52,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 15:19:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:52,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 15:19:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:52,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 15:19:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 15:19:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:52,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 15:19:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:19:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 15:19:52,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:52,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623496698] [2022-12-13 15:19:52,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623496698] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:19:52,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797318020] [2022-12-13 15:19:52,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:52,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:52,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:19:52,421 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:19:52,422 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:19:52,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:52,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1102 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 15:19:52,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:19:52,666 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 15:19:52,667 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:19:52,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797318020] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:52,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:19:52,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-12-13 15:19:52,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376210873] [2022-12-13 15:19:52,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:52,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:19:52,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:52,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:19:52,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:19:52,668 INFO L87 Difference]: Start difference. First operand 440 states and 661 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 15:19:52,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:52,727 INFO L93 Difference]: Finished difference Result 869 states and 1311 transitions. [2022-12-13 15:19:52,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:19:52,728 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-12-13 15:19:52,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:52,729 INFO L225 Difference]: With dead ends: 869 [2022-12-13 15:19:52,730 INFO L226 Difference]: Without dead ends: 442 [2022-12-13 15:19:52,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:19:52,731 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 132 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:52,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 2056 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:19:52,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2022-12-13 15:19:52,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2022-12-13 15:19:52,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 341 states have (on average 1.5043988269794721) internal successors, (513), 346 states have internal predecessors, (513), 74 states have call successors, (74), 24 states have call predecessors, (74), 26 states have return successors, (80), 73 states have call predecessors, (80), 73 states have call successors, (80) [2022-12-13 15:19:52,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 667 transitions. [2022-12-13 15:19:52,746 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 667 transitions. Word has length 113 [2022-12-13 15:19:52,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:52,746 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 667 transitions. [2022-12-13 15:19:52,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 15:19:52,746 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 667 transitions. [2022-12-13 15:19:52,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-12-13 15:19:52,748 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:52,748 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:19:52,754 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:19:52,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:19:52,949 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:52,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:52,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1612890018, now seen corresponding path program 1 times [2022-12-13 15:19:52,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:52,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259114717] [2022-12-13 15:19:52,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:52,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:53,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:19:53,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:19:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:53,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:19:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:53,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:19:53,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:53,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:19:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:53,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 15:19:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:53,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:19:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:53,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 15:19:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 15:19:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:53,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 15:19:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:53,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 15:19:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:53,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 15:19:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:53,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 15:19:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:53,217 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 15:19:53,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:53,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259114717] [2022-12-13 15:19:53,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259114717] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:53,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:53,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:19:53,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48781021] [2022-12-13 15:19:53,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:53,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:19:53,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:53,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:19:53,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:19:53,218 INFO L87 Difference]: Start difference. First operand 442 states and 667 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 15:19:55,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:55,095 INFO L93 Difference]: Finished difference Result 1076 states and 1633 transitions. [2022-12-13 15:19:55,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:19:55,095 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 114 [2022-12-13 15:19:55,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:55,100 INFO L225 Difference]: With dead ends: 1076 [2022-12-13 15:19:55,100 INFO L226 Difference]: Without dead ends: 657 [2022-12-13 15:19:55,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:19:55,102 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1487 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 3022 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 3621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 3022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:55,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1504 Valid, 1044 Invalid, 3621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 3022 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 15:19:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-12-13 15:19:55,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 442. [2022-12-13 15:19:55,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 341 states have (on average 1.5043988269794721) internal successors, (513), 346 states have internal predecessors, (513), 74 states have call successors, (74), 24 states have call predecessors, (74), 26 states have return successors, (79), 73 states have call predecessors, (79), 73 states have call successors, (79) [2022-12-13 15:19:55,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 666 transitions. [2022-12-13 15:19:55,152 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 666 transitions. Word has length 114 [2022-12-13 15:19:55,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:55,152 INFO L495 AbstractCegarLoop]: Abstraction has 442 states and 666 transitions. [2022-12-13 15:19:55,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 15:19:55,152 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 666 transitions. [2022-12-13 15:19:55,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-13 15:19:55,153 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:55,154 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:19:55,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:19:55,154 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:55,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:55,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1193438081, now seen corresponding path program 2 times [2022-12-13 15:19:55,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:55,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534396609] [2022-12-13 15:19:55,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:55,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:55,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:55,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:19:55,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:55,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:19:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:55,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:19:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:55,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:19:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:55,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:19:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:55,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 15:19:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:55,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 15:19:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:55,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 15:19:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:55,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 15:19:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:55,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 15:19:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:55,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 15:19:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:55,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 15:19:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:55,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 15:19:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 15:19:55,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:55,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534396609] [2022-12-13 15:19:55,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534396609] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:55,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:55,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:19:55,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973119294] [2022-12-13 15:19:55,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:55,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:19:55,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:55,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:19:55,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:19:55,290 INFO L87 Difference]: Start difference. First operand 442 states and 666 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 15:19:57,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:57,120 INFO L93 Difference]: Finished difference Result 1078 states and 1636 transitions. [2022-12-13 15:19:57,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:19:57,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 115 [2022-12-13 15:19:57,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:57,123 INFO L225 Difference]: With dead ends: 1078 [2022-12-13 15:19:57,123 INFO L226 Difference]: Without dead ends: 659 [2022-12-13 15:19:57,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:19:57,125 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 1469 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 3002 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1486 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 3595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 3002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:57,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1486 Valid, 1044 Invalid, 3595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 3002 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 15:19:57,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-12-13 15:19:57,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 444. [2022-12-13 15:19:57,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 342 states have (on average 1.5029239766081872) internal successors, (514), 348 states have internal predecessors, (514), 74 states have call successors, (74), 24 states have call predecessors, (74), 27 states have return successors, (81), 73 states have call predecessors, (81), 73 states have call successors, (81) [2022-12-13 15:19:57,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 669 transitions. [2022-12-13 15:19:57,154 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 669 transitions. Word has length 115 [2022-12-13 15:19:57,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:57,154 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 669 transitions. [2022-12-13 15:19:57,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-12-13 15:19:57,154 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 669 transitions. [2022-12-13 15:19:57,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-13 15:19:57,155 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:57,156 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:19:57,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:19:57,156 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:57,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:57,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1780926243, now seen corresponding path program 1 times [2022-12-13 15:19:57,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:57,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811432796] [2022-12-13 15:19:57,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:57,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:57,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:57,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:19:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:57,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:19:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:57,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:19:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:57,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:19:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:57,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:19:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:57,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:19:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:57,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 15:19:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:57,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 15:19:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:57,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:19:57,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:57,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 15:19:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:57,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 15:19:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:57,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 15:19:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:57,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 15:19:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:57,321 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 15:19:57,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:57,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811432796] [2022-12-13 15:19:57,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811432796] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:57,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:57,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 15:19:57,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450182215] [2022-12-13 15:19:57,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:57,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:19:57,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:57,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:19:57,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:19:57,322 INFO L87 Difference]: Start difference. First operand 444 states and 669 transitions. Second operand has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 15:19:59,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:59,604 INFO L93 Difference]: Finished difference Result 1076 states and 1631 transitions. [2022-12-13 15:19:59,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:19:59,605 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 116 [2022-12-13 15:19:59,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:59,608 INFO L225 Difference]: With dead ends: 1076 [2022-12-13 15:19:59,608 INFO L226 Difference]: Without dead ends: 659 [2022-12-13 15:19:59,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-12-13 15:19:59,610 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1554 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 5089 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 5725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 5089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:59,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 1362 Invalid, 5725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 5089 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 15:19:59,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-12-13 15:19:59,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 444. [2022-12-13 15:19:59,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 342 states have (on average 1.5029239766081872) internal successors, (514), 348 states have internal predecessors, (514), 74 states have call successors, (74), 24 states have call predecessors, (74), 27 states have return successors, (80), 73 states have call predecessors, (80), 73 states have call successors, (80) [2022-12-13 15:19:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 668 transitions. [2022-12-13 15:19:59,651 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 668 transitions. Word has length 116 [2022-12-13 15:19:59,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:59,652 INFO L495 AbstractCegarLoop]: Abstraction has 444 states and 668 transitions. [2022-12-13 15:19:59,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 8 states have internal predecessors, (80), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 15:19:59,652 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 668 transitions. [2022-12-13 15:19:59,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-13 15:19:59,654 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:59,654 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:19:59,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:19:59,654 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:59,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:59,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1953819643, now seen corresponding path program 2 times [2022-12-13 15:19:59,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:59,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465296510] [2022-12-13 15:19:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:59,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:59,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:19:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:59,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:19:59,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:59,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:19:59,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:59,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:19:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:59,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:19:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:59,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:19:59,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:59,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 15:19:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:59,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 15:19:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:59,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 15:19:59,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:59,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 15:19:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:59,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 15:19:59,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:59,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 15:19:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:59,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 15:19:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:59,826 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 15:19:59,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:59,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465296510] [2022-12-13 15:19:59,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465296510] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:59,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:59,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 15:19:59,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417687815] [2022-12-13 15:19:59,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:59,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 15:19:59,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:59,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 15:19:59,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:19:59,829 INFO L87 Difference]: Start difference. First operand 444 states and 668 transitions. Second operand has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 15:20:02,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:02,094 INFO L93 Difference]: Finished difference Result 1078 states and 1637 transitions. [2022-12-13 15:20:02,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:20:02,094 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 117 [2022-12-13 15:20:02,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:02,097 INFO L225 Difference]: With dead ends: 1078 [2022-12-13 15:20:02,097 INFO L226 Difference]: Without dead ends: 661 [2022-12-13 15:20:02,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-12-13 15:20:02,099 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1647 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 4871 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1647 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 5511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 4871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:02,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1647 Valid, 1362 Invalid, 5511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 4871 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-13 15:20:02,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2022-12-13 15:20:02,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 446. [2022-12-13 15:20:02,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 343 states have (on average 1.501457725947522) internal successors, (515), 350 states have internal predecessors, (515), 74 states have call successors, (74), 24 states have call predecessors, (74), 28 states have return successors, (85), 73 states have call predecessors, (85), 73 states have call successors, (85) [2022-12-13 15:20:02,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 674 transitions. [2022-12-13 15:20:02,138 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 674 transitions. Word has length 117 [2022-12-13 15:20:02,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:20:02,139 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 674 transitions. [2022-12-13 15:20:02,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.363636363636363) internal successors, (81), 8 states have internal predecessors, (81), 4 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-12-13 15:20:02,139 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 674 transitions. [2022-12-13 15:20:02,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-12-13 15:20:02,141 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:02,141 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:02,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:20:02,142 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:02,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:02,142 INFO L85 PathProgramCache]: Analyzing trace with hash -310085064, now seen corresponding path program 1 times [2022-12-13 15:20:02,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:02,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542003986] [2022-12-13 15:20:02,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:02,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:02,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:20:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:02,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:20:02,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:02,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:20:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:02,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:20:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:02,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:20:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:02,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:20:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:02,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 15:20:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:02,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 15:20:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:02,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 15:20:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:02,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 15:20:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:02,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 15:20:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:02,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 15:20:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:02,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 15:20:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:02,291 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-12-13 15:20:02,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:20:02,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542003986] [2022-12-13 15:20:02,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542003986] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:20:02,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310315923] [2022-12-13 15:20:02,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:02,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:20:02,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:20:02,292 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:20:02,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:20:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:02,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:20:02,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:20:02,491 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:20:02,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:20:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:20:02,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310315923] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:20:02,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:20:02,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-12-13 15:20:02,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029910588] [2022-12-13 15:20:02,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:20:02,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 15:20:02,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:20:02,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 15:20:02,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:20:02,561 INFO L87 Difference]: Start difference. First operand 446 states and 674 transitions. Second operand has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2022-12-13 15:20:05,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:05,856 INFO L93 Difference]: Finished difference Result 1807 states and 2945 transitions. [2022-12-13 15:20:05,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 15:20:05,856 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) Word has length 118 [2022-12-13 15:20:05,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:05,861 INFO L225 Difference]: With dead ends: 1807 [2022-12-13 15:20:05,862 INFO L226 Difference]: Without dead ends: 1392 [2022-12-13 15:20:05,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2022-12-13 15:20:05,864 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 3846 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 5981 mSolverCounterSat, 1507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3848 SdHoareTripleChecker+Valid, 3162 SdHoareTripleChecker+Invalid, 7488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1507 IncrementalHoareTripleChecker+Valid, 5981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:05,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3848 Valid, 3162 Invalid, 7488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1507 Valid, 5981 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-13 15:20:05,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1392 states. [2022-12-13 15:20:05,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1392 to 799. [2022-12-13 15:20:05,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 632 states have (on average 1.5601265822784811) internal successors, (986), 639 states have internal predecessors, (986), 138 states have call successors, (138), 24 states have call predecessors, (138), 28 states have return successors, (159), 137 states have call predecessors, (159), 137 states have call successors, (159) [2022-12-13 15:20:05,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1283 transitions. [2022-12-13 15:20:05,928 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1283 transitions. Word has length 118 [2022-12-13 15:20:05,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:20:05,928 INFO L495 AbstractCegarLoop]: Abstraction has 799 states and 1283 transitions. [2022-12-13 15:20:05,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 9.642857142857142) internal successors, (135), 11 states have internal predecessors, (135), 4 states have call successors, (31), 6 states have call predecessors, (31), 3 states have return successors, (24), 3 states have call predecessors, (24), 4 states have call successors, (24) [2022-12-13 15:20:05,929 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1283 transitions. [2022-12-13 15:20:05,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-12-13 15:20:05,931 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:05,931 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:05,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 15:20:06,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 15:20:06,133 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:06,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:06,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1558417906, now seen corresponding path program 1 times [2022-12-13 15:20:06,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:06,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015584551] [2022-12-13 15:20:06,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:06,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:06,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:06,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:20:06,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:06,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:20:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:06,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:20:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:06,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:20:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:06,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:20:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:06,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:20:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:06,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 15:20:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 15:20:06,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:06,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 15:20:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:06,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 15:20:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:06,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 15:20:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:06,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 15:20:06,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:06,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 15:20:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:06,244 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:20:06,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:20:06,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015584551] [2022-12-13 15:20:06,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015584551] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:06,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:06,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:20:06,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024541540] [2022-12-13 15:20:06,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:06,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:20:06,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:20:06,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:20:06,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:20:06,246 INFO L87 Difference]: Start difference. First operand 799 states and 1283 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:07,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:07,626 INFO L93 Difference]: Finished difference Result 2068 states and 3388 transitions. [2022-12-13 15:20:07,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:20:07,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 121 [2022-12-13 15:20:07,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:07,631 INFO L225 Difference]: With dead ends: 2068 [2022-12-13 15:20:07,631 INFO L226 Difference]: Without dead ends: 1347 [2022-12-13 15:20:07,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:20:07,632 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 1446 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 2437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:07,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 898 Invalid, 2437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 15:20:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2022-12-13 15:20:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 1124. [2022-12-13 15:20:07,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 893 states have (on average 1.58006718924972) internal successors, (1411), 900 states have internal predecessors, (1411), 202 states have call successors, (202), 24 states have call predecessors, (202), 28 states have return successors, (233), 201 states have call predecessors, (233), 201 states have call successors, (233) [2022-12-13 15:20:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1846 transitions. [2022-12-13 15:20:07,714 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1846 transitions. Word has length 121 [2022-12-13 15:20:07,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:20:07,714 INFO L495 AbstractCegarLoop]: Abstraction has 1124 states and 1846 transitions. [2022-12-13 15:20:07,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:07,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1846 transitions. [2022-12-13 15:20:07,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-13 15:20:07,718 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:07,718 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:07,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:20:07,718 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:07,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:07,718 INFO L85 PathProgramCache]: Analyzing trace with hash -783601292, now seen corresponding path program 1 times [2022-12-13 15:20:07,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:07,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948828613] [2022-12-13 15:20:07,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:07,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:20:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:07,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:20:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:07,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:20:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:07,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:20:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:07,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:20:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:07,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:20:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:07,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 15:20:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:07,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 15:20:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:07,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 15:20:07,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:07,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 15:20:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:07,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 15:20:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:07,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 15:20:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:07,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 15:20:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:20:07,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:20:07,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948828613] [2022-12-13 15:20:07,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948828613] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:07,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:07,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:20:07,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500092508] [2022-12-13 15:20:07,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:07,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:20:07,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:20:07,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:20:07,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:20:07,805 INFO L87 Difference]: Start difference. First operand 1124 states and 1846 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:09,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:09,078 INFO L93 Difference]: Finished difference Result 2873 states and 4772 transitions. [2022-12-13 15:20:09,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:20:09,078 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-12-13 15:20:09,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:09,083 INFO L225 Difference]: With dead ends: 2873 [2022-12-13 15:20:09,084 INFO L226 Difference]: Without dead ends: 1880 [2022-12-13 15:20:09,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:20:09,086 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1419 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1782 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 2442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 1782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:09,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 876 Invalid, 2442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 1782 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 15:20:09,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2022-12-13 15:20:09,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1657. [2022-12-13 15:20:09,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1331 states have (on average 1.59053343350864) internal successors, (2117), 1338 states have internal predecessors, (2117), 297 states have call successors, (297), 24 states have call predecessors, (297), 28 states have return successors, (328), 296 states have call predecessors, (328), 296 states have call successors, (328) [2022-12-13 15:20:09,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2742 transitions. [2022-12-13 15:20:09,210 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2742 transitions. Word has length 122 [2022-12-13 15:20:09,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:20:09,211 INFO L495 AbstractCegarLoop]: Abstraction has 1657 states and 2742 transitions. [2022-12-13 15:20:09,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:09,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2742 transitions. [2022-12-13 15:20:09,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-12-13 15:20:09,215 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:09,215 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:09,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:20:09,215 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:09,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:09,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1220034332, now seen corresponding path program 1 times [2022-12-13 15:20:09,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:09,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815731256] [2022-12-13 15:20:09,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:09,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:09,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:09,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:20:09,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:09,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:20:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:09,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:20:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:09,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:20:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:09,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:20:09,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:09,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:20:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:09,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 15:20:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:09,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 15:20:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:09,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 15:20:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:09,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 15:20:09,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:09,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 15:20:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:09,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 15:20:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:09,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 15:20:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:20:09,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:20:09,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815731256] [2022-12-13 15:20:09,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815731256] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:09,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:09,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:20:09,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19963160] [2022-12-13 15:20:09,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:09,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:20:09,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:20:09,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:20:09,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:20:09,305 INFO L87 Difference]: Start difference. First operand 1657 states and 2742 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:10,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:10,652 INFO L93 Difference]: Finished difference Result 4080 states and 6858 transitions. [2022-12-13 15:20:10,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:20:10,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-12-13 15:20:10,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:10,660 INFO L225 Difference]: With dead ends: 4080 [2022-12-13 15:20:10,660 INFO L226 Difference]: Without dead ends: 2689 [2022-12-13 15:20:10,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:20:10,663 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1428 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 664 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1443 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 664 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:10,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1443 Valid, 871 Invalid, 2448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [664 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 15:20:10,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2689 states. [2022-12-13 15:20:10,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2689 to 2466. [2022-12-13 15:20:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2017 states have (on average 1.5984134853743184) internal successors, (3224), 2024 states have internal predecessors, (3224), 420 states have call successors, (420), 24 states have call predecessors, (420), 28 states have return successors, (467), 419 states have call predecessors, (467), 419 states have call successors, (467) [2022-12-13 15:20:10,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4111 transitions. [2022-12-13 15:20:10,856 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4111 transitions. Word has length 123 [2022-12-13 15:20:10,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:20:10,857 INFO L495 AbstractCegarLoop]: Abstraction has 2466 states and 4111 transitions. [2022-12-13 15:20:10,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:10,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4111 transitions. [2022-12-13 15:20:10,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-12-13 15:20:10,862 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:10,863 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:10,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:20:10,863 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:10,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:10,863 INFO L85 PathProgramCache]: Analyzing trace with hash 776702101, now seen corresponding path program 1 times [2022-12-13 15:20:10,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:10,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750837566] [2022-12-13 15:20:10,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:10,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:10,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:20:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:10,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:20:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:10,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:20:10,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:10,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:20:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:20:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:10,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:20:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:10,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 15:20:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:10,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 15:20:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:10,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 15:20:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:10,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 15:20:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:10,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 15:20:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:10,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 15:20:10,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:10,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 15:20:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:10,939 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:20:10,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:20:10,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750837566] [2022-12-13 15:20:10,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750837566] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:10,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:10,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:20:10,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397328773] [2022-12-13 15:20:10,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:10,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:20:10,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:20:10,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:20:10,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:20:10,941 INFO L87 Difference]: Start difference. First operand 2466 states and 4111 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:12,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:12,607 INFO L93 Difference]: Finished difference Result 5964 states and 10118 transitions. [2022-12-13 15:20:12,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:20:12,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-12-13 15:20:12,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:12,623 INFO L225 Difference]: With dead ends: 5964 [2022-12-13 15:20:12,623 INFO L226 Difference]: Without dead ends: 3983 [2022-12-13 15:20:12,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:20:12,629 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1408 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1799 mSolverCounterSat, 660 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1423 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 2459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 660 IncrementalHoareTripleChecker+Valid, 1799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:12,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1423 Valid, 871 Invalid, 2459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [660 Valid, 1799 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 15:20:12,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3983 states. [2022-12-13 15:20:12,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3983 to 3760. [2022-12-13 15:20:12,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3760 states, 3132 states have (on average 1.603448275862069) internal successors, (5022), 3139 states have internal predecessors, (5022), 599 states have call successors, (599), 24 states have call predecessors, (599), 28 states have return successors, (672), 598 states have call predecessors, (672), 598 states have call successors, (672) [2022-12-13 15:20:12,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3760 states to 3760 states and 6293 transitions. [2022-12-13 15:20:12,988 INFO L78 Accepts]: Start accepts. Automaton has 3760 states and 6293 transitions. Word has length 124 [2022-12-13 15:20:12,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:20:12,988 INFO L495 AbstractCegarLoop]: Abstraction has 3760 states and 6293 transitions. [2022-12-13 15:20:12,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:12,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3760 states and 6293 transitions. [2022-12-13 15:20:12,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-12-13 15:20:12,993 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:12,994 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:12,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 15:20:12,994 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:12,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:12,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1859394648, now seen corresponding path program 1 times [2022-12-13 15:20:12,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:12,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069325533] [2022-12-13 15:20:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:12,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:13,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:20:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:13,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:20:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:13,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:20:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:13,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:20:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:13,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:20:13,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:13,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:20:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:13,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 15:20:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:13,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:20:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:13,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 15:20:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:13,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 15:20:13,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:13,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 15:20:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:13,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 15:20:13,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:13,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 15:20:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:20:13,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:20:13,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069325533] [2022-12-13 15:20:13,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069325533] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:13,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:13,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:20:13,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438971396] [2022-12-13 15:20:13,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:13,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:20:13,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:20:13,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:20:13,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:20:13,070 INFO L87 Difference]: Start difference. First operand 3760 states and 6293 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:14,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:14,957 INFO L93 Difference]: Finished difference Result 9067 states and 15482 transitions. [2022-12-13 15:20:14,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:20:14,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-12-13 15:20:14,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:14,974 INFO L225 Difference]: With dead ends: 9067 [2022-12-13 15:20:14,974 INFO L226 Difference]: Without dead ends: 6124 [2022-12-13 15:20:14,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:20:14,979 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 1407 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 1803 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1422 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 2468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 1803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:14,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1422 Valid, 907 Invalid, 2468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 1803 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 15:20:14,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6124 states. [2022-12-13 15:20:15,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6124 to 5901. [2022-12-13 15:20:15,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5901 states, 4897 states have (on average 1.5985297120686135) internal successors, (7828), 4904 states have internal predecessors, (7828), 975 states have call successors, (975), 24 states have call predecessors, (975), 28 states have return successors, (1092), 974 states have call predecessors, (1092), 974 states have call successors, (1092) [2022-12-13 15:20:15,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5901 states to 5901 states and 9895 transitions. [2022-12-13 15:20:15,414 INFO L78 Accepts]: Start accepts. Automaton has 5901 states and 9895 transitions. Word has length 125 [2022-12-13 15:20:15,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:20:15,414 INFO L495 AbstractCegarLoop]: Abstraction has 5901 states and 9895 transitions. [2022-12-13 15:20:15,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:15,415 INFO L276 IsEmpty]: Start isEmpty. Operand 5901 states and 9895 transitions. [2022-12-13 15:20:15,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-12-13 15:20:15,422 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:15,422 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:15,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 15:20:15,422 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:15,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:15,423 INFO L85 PathProgramCache]: Analyzing trace with hash 433004377, now seen corresponding path program 1 times [2022-12-13 15:20:15,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:15,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986314844] [2022-12-13 15:20:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:15,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:20:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:20:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:20:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:20:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:20:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:20:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 15:20:15,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 15:20:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 15:20:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 15:20:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 15:20:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 15:20:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 15:20:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,501 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:20:15,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:20:15,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986314844] [2022-12-13 15:20:15,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986314844] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:15,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:15,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:20:15,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439190726] [2022-12-13 15:20:15,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:15,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:20:15,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:20:15,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:20:15,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:20:15,502 INFO L87 Difference]: Start difference. First operand 5901 states and 9895 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:17,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:17,633 INFO L93 Difference]: Finished difference Result 14684 states and 25095 transitions. [2022-12-13 15:20:17,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:20:17,634 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 126 [2022-12-13 15:20:17,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:17,663 INFO L225 Difference]: With dead ends: 14684 [2022-12-13 15:20:17,663 INFO L226 Difference]: Without dead ends: 10002 [2022-12-13 15:20:17,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:20:17,682 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 1573 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1670 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 1670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:17,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 904 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 1670 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 15:20:17,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10002 states. [2022-12-13 15:20:18,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10002 to 9779. [2022-12-13 15:20:18,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9779 states, 8169 states have (on average 1.5971355123026074) internal successors, (13047), 8176 states have internal predecessors, (13047), 1581 states have call successors, (1581), 24 states have call predecessors, (1581), 28 states have return successors, (1776), 1580 states have call predecessors, (1776), 1580 states have call successors, (1776) [2022-12-13 15:20:18,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9779 states to 9779 states and 16404 transitions. [2022-12-13 15:20:18,476 INFO L78 Accepts]: Start accepts. Automaton has 9779 states and 16404 transitions. Word has length 126 [2022-12-13 15:20:18,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:20:18,476 INFO L495 AbstractCegarLoop]: Abstraction has 9779 states and 16404 transitions. [2022-12-13 15:20:18,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:18,477 INFO L276 IsEmpty]: Start isEmpty. Operand 9779 states and 16404 transitions. [2022-12-13 15:20:18,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-12-13 15:20:18,488 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:18,488 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:18,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 15:20:18,488 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:18,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:18,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1929234490, now seen corresponding path program 1 times [2022-12-13 15:20:18,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:18,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428048273] [2022-12-13 15:20:18,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:18,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:18,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:18,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:20:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:18,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:20:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:18,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:20:18,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:18,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:20:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:18,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:20:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:18,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:20:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:18,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 15:20:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:18,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 15:20:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:18,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 15:20:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:18,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 15:20:18,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:18,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 15:20:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:18,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 15:20:18,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:18,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 15:20:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:20:18,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:20:18,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428048273] [2022-12-13 15:20:18,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428048273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:18,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:18,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:20:18,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028131590] [2022-12-13 15:20:18,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:18,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:20:18,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:20:18,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:20:18,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:20:18,577 INFO L87 Difference]: Start difference. First operand 9779 states and 16404 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:20,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:20,963 INFO L93 Difference]: Finished difference Result 25393 states and 43376 transitions. [2022-12-13 15:20:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:20:20,964 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 127 [2022-12-13 15:20:20,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:21,004 INFO L225 Difference]: With dead ends: 25393 [2022-12-13 15:20:21,005 INFO L226 Difference]: Without dead ends: 17315 [2022-12-13 15:20:21,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:20:21,019 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 1426 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 1793 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1441 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 2449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 1793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:21,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1441 Valid, 935 Invalid, 2449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 1793 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 15:20:21,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17315 states. [2022-12-13 15:20:22,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17315 to 17092. [2022-12-13 15:20:22,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17092 states, 14279 states have (on average 1.5892569507668604) internal successors, (22693), 14286 states have internal predecessors, (22693), 2784 states have call successors, (2784), 24 states have call predecessors, (2784), 28 states have return successors, (3123), 2783 states have call predecessors, (3123), 2783 states have call successors, (3123) [2022-12-13 15:20:22,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17092 states to 17092 states and 28600 transitions. [2022-12-13 15:20:22,410 INFO L78 Accepts]: Start accepts. Automaton has 17092 states and 28600 transitions. Word has length 127 [2022-12-13 15:20:22,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:20:22,411 INFO L495 AbstractCegarLoop]: Abstraction has 17092 states and 28600 transitions. [2022-12-13 15:20:22,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:22,411 INFO L276 IsEmpty]: Start isEmpty. Operand 17092 states and 28600 transitions. [2022-12-13 15:20:22,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-13 15:20:22,425 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:22,425 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:22,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 15:20:22,425 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:22,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:22,425 INFO L85 PathProgramCache]: Analyzing trace with hash -709818470, now seen corresponding path program 1 times [2022-12-13 15:20:22,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:22,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100838731] [2022-12-13 15:20:22,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:22,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:22,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:20:22,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:22,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:20:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:22,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:20:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:22,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:20:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:22,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:20:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:22,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:20:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:22,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 15:20:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:22,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 15:20:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:22,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 15:20:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:22,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 15:20:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:22,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 15:20:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:22,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 15:20:22,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:22,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 15:20:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:20:22,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:20:22,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100838731] [2022-12-13 15:20:22,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100838731] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:22,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:22,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:20:22,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214056137] [2022-12-13 15:20:22,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:22,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:20:22,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:20:22,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:20:22,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:20:22,505 INFO L87 Difference]: Start difference. First operand 17092 states and 28600 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:26,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:26,164 INFO L93 Difference]: Finished difference Result 45369 states and 77389 transitions. [2022-12-13 15:20:26,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:20:26,165 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 128 [2022-12-13 15:20:26,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:26,236 INFO L225 Difference]: With dead ends: 45369 [2022-12-13 15:20:26,236 INFO L226 Difference]: Without dead ends: 30655 [2022-12-13 15:20:26,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:20:26,264 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1436 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1451 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:26,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1451 Valid, 874 Invalid, 2439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 1784 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 15:20:26,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30655 states. [2022-12-13 15:20:28,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30655 to 30432. [2022-12-13 15:20:28,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30432 states, 25580 states have (on average 1.585457388584832) internal successors, (40556), 25587 states have internal predecessors, (40556), 4823 states have call successors, (4823), 24 states have call predecessors, (4823), 28 states have return successors, (5436), 4822 states have call predecessors, (5436), 4822 states have call successors, (5436) [2022-12-13 15:20:28,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30432 states to 30432 states and 50815 transitions. [2022-12-13 15:20:28,964 INFO L78 Accepts]: Start accepts. Automaton has 30432 states and 50815 transitions. Word has length 128 [2022-12-13 15:20:28,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:20:28,964 INFO L495 AbstractCegarLoop]: Abstraction has 30432 states and 50815 transitions. [2022-12-13 15:20:28,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:28,965 INFO L276 IsEmpty]: Start isEmpty. Operand 30432 states and 50815 transitions. [2022-12-13 15:20:28,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-12-13 15:20:28,982 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:28,982 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:28,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 15:20:28,982 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:28,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:28,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1274785960, now seen corresponding path program 1 times [2022-12-13 15:20:28,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:28,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999084761] [2022-12-13 15:20:28,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:28,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:29,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:20:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:29,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:20:29,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:29,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:20:29,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:29,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:20:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:29,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:20:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:29,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:20:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:29,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 15:20:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:29,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 15:20:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:29,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 15:20:29,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:29,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 15:20:29,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:29,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 15:20:29,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:29,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 15:20:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:29,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 15:20:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:20:29,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:20:29,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999084761] [2022-12-13 15:20:29,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999084761] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:29,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:29,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:20:29,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133297580] [2022-12-13 15:20:29,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:29,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:20:29,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:20:29,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:20:29,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:20:29,056 INFO L87 Difference]: Start difference. First operand 30432 states and 50815 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:34,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:34,728 INFO L93 Difference]: Finished difference Result 83106 states and 140913 transitions. [2022-12-13 15:20:34,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:20:34,728 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 129 [2022-12-13 15:20:34,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:34,863 INFO L225 Difference]: With dead ends: 83106 [2022-12-13 15:20:34,863 INFO L226 Difference]: Without dead ends: 55864 [2022-12-13 15:20:34,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:20:34,907 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1499 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 2395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 670 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:34,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 872 Invalid, 2395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [670 Valid, 1725 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 15:20:34,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55864 states. [2022-12-13 15:20:39,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55864 to 55641. [2022-12-13 15:20:39,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55641 states, 47074 states have (on average 1.5802141309427709) internal successors, (74387), 47081 states have internal predecessors, (74387), 8538 states have call successors, (8538), 24 states have call predecessors, (8538), 28 states have return successors, (9683), 8537 states have call predecessors, (9683), 8537 states have call successors, (9683) [2022-12-13 15:20:39,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55641 states to 55641 states and 92608 transitions. [2022-12-13 15:20:39,599 INFO L78 Accepts]: Start accepts. Automaton has 55641 states and 92608 transitions. Word has length 129 [2022-12-13 15:20:39,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:20:39,599 INFO L495 AbstractCegarLoop]: Abstraction has 55641 states and 92608 transitions. [2022-12-13 15:20:39,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:39,599 INFO L276 IsEmpty]: Start isEmpty. Operand 55641 states and 92608 transitions. [2022-12-13 15:20:39,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-12-13 15:20:39,621 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:39,621 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:39,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 15:20:39,621 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:39,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:39,621 INFO L85 PathProgramCache]: Analyzing trace with hash -543713350, now seen corresponding path program 1 times [2022-12-13 15:20:39,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:39,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475647376] [2022-12-13 15:20:39,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:39,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:39,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:20:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:39,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:20:39,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:39,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:20:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:39,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:20:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:39,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:20:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:39,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:20:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:39,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:20:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:39,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 15:20:39,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:39,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 15:20:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:39,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 15:20:39,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:39,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 15:20:39,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:39,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 15:20:39,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:39,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 15:20:39,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:39,688 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:20:39,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:20:39,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475647376] [2022-12-13 15:20:39,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475647376] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:39,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:39,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:20:39,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978060669] [2022-12-13 15:20:39,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:39,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:20:39,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:20:39,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:20:39,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:20:39,690 INFO L87 Difference]: Start difference. First operand 55641 states and 92608 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:48,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:48,603 INFO L93 Difference]: Finished difference Result 104162 states and 176899 transitions. [2022-12-13 15:20:48,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:20:48,604 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 130 [2022-12-13 15:20:48,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:48,879 INFO L225 Difference]: With dead ends: 104162 [2022-12-13 15:20:48,879 INFO L226 Difference]: Without dead ends: 103938 [2022-12-13 15:20:48,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 15:20:48,912 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 1399 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1815 mSolverCounterSat, 656 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 2471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 656 IncrementalHoareTripleChecker+Valid, 1815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:48,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 874 Invalid, 2471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [656 Valid, 1815 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 15:20:48,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103938 states. [2022-12-13 15:20:57,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103938 to 103715. [2022-12-13 15:20:57,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103715 states, 88349 states have (on average 1.573509603957034) internal successors, (139018), 88356 states have internal predecessors, (139018), 15337 states have call successors, (15337), 24 states have call predecessors, (15337), 28 states have return successors, (17528), 15336 states have call predecessors, (17528), 15336 states have call successors, (17528) [2022-12-13 15:20:57,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103715 states to 103715 states and 171883 transitions. [2022-12-13 15:20:57,436 INFO L78 Accepts]: Start accepts. Automaton has 103715 states and 171883 transitions. Word has length 130 [2022-12-13 15:20:57,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:20:57,436 INFO L495 AbstractCegarLoop]: Abstraction has 103715 states and 171883 transitions. [2022-12-13 15:20:57,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:20:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 103715 states and 171883 transitions. [2022-12-13 15:20:57,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-12-13 15:20:57,463 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:57,463 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:20:57,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 15:20:57,463 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:57,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:57,463 INFO L85 PathProgramCache]: Analyzing trace with hash -808213529, now seen corresponding path program 1 times [2022-12-13 15:20:57,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:57,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372027857] [2022-12-13 15:20:57,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:57,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:57,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:20:57,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:57,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:20:57,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:57,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:20:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:57,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:20:57,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:57,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:20:57,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:57,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:20:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:57,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 15:20:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:57,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 15:20:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:57,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 15:20:57,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:57,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 15:20:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:57,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:20:57,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:57,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 15:20:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:57,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 15:20:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:57,718 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:20:57,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:20:57,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372027857] [2022-12-13 15:20:57,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372027857] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:57,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:20:57,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-12-13 15:20:57,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094800785] [2022-12-13 15:20:57,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:57,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 15:20:57,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:20:57,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 15:20:57,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2022-12-13 15:20:57,720 INFO L87 Difference]: Start difference. First operand 103715 states and 171883 transitions. Second operand has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-12-13 15:21:20,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:21:20,143 INFO L93 Difference]: Finished difference Result 207840 states and 356289 transitions. [2022-12-13 15:21:20,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-13 15:21:20,144 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 131 [2022-12-13 15:21:20,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:21:20,780 INFO L225 Difference]: With dead ends: 207840 [2022-12-13 15:21:20,780 INFO L226 Difference]: Without dead ends: 207622 [2022-12-13 15:21:20,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1284 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=872, Invalid=3820, Unknown=0, NotChecked=0, Total=4692 [2022-12-13 15:21:20,845 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 5517 mSDsluCounter, 2890 mSDsCounter, 0 mSdLazyCounter, 13716 mSolverCounterSat, 3533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5517 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 17249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3533 IncrementalHoareTripleChecker+Valid, 13716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-12-13 15:21:20,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5517 Valid, 3150 Invalid, 17249 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3533 Valid, 13716 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-12-13 15:21:20,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207622 states. [2022-12-13 15:21:37,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207622 to 206742. [2022-12-13 15:21:38,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206742 states, 176143 states have (on average 1.5741017241672959) internal successors, (277267), 176050 states have internal predecessors, (277267), 30523 states have call successors, (30523), 65 states have call predecessors, (30523), 75 states have return successors, (38194), 30634 states have call predecessors, (38194), 30520 states have call successors, (38194) [2022-12-13 15:21:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206742 states to 206742 states and 345984 transitions. [2022-12-13 15:21:38,901 INFO L78 Accepts]: Start accepts. Automaton has 206742 states and 345984 transitions. Word has length 131 [2022-12-13 15:21:38,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:21:38,901 INFO L495 AbstractCegarLoop]: Abstraction has 206742 states and 345984 transitions. [2022-12-13 15:21:38,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.625) internal successors, (90), 12 states have internal predecessors, (90), 6 states have call successors, (15), 7 states have call predecessors, (15), 4 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-12-13 15:21:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 206742 states and 345984 transitions. [2022-12-13 15:21:38,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-13 15:21:38,960 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:21:38,960 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:21:38,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 15:21:38,960 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:21:38,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:21:38,960 INFO L85 PathProgramCache]: Analyzing trace with hash 387858403, now seen corresponding path program 1 times [2022-12-13 15:21:38,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:21:38,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400466906] [2022-12-13 15:21:38,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:21:38,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:21:38,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:39,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:21:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:39,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:21:39,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:39,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:21:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:39,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:21:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:39,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:21:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:39,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:21:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:39,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 15:21:39,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:39,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 15:21:39,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:39,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 15:21:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:39,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 15:21:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:39,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:21:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:39,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 15:21:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:39,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 15:21:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:39,202 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:21:39,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:21:39,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400466906] [2022-12-13 15:21:39,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400466906] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:21:39,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:21:39,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-12-13 15:21:39,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908072136] [2022-12-13 15:21:39,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:21:39,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 15:21:39,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:21:39,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 15:21:39,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:21:39,204 INFO L87 Difference]: Start difference. First operand 206742 states and 345984 transitions. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-12-13 15:21:59,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:21:59,085 INFO L93 Difference]: Finished difference Result 209450 states and 356606 transitions. [2022-12-13 15:21:59,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 15:21:59,086 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 132 [2022-12-13 15:21:59,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:21:59,979 INFO L225 Difference]: With dead ends: 209450 [2022-12-13 15:21:59,979 INFO L226 Difference]: Without dead ends: 207582 [2022-12-13 15:22:00,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=245, Invalid=811, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 15:22:00,059 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 3279 mSDsluCounter, 1582 mSDsCounter, 0 mSdLazyCounter, 5835 mSolverCounterSat, 1587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3294 SdHoareTripleChecker+Valid, 1763 SdHoareTripleChecker+Invalid, 7422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1587 IncrementalHoareTripleChecker+Valid, 5835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 15:22:00,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3294 Valid, 1763 Invalid, 7422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1587 Valid, 5835 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 15:22:00,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207582 states. [2022-12-13 15:22:17,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207582 to 206833. [2022-12-13 15:22:17,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206833 states, 176209 states have (on average 1.574039918505865) internal successors, (277360), 176121 states have internal predecessors, (277360), 30545 states have call successors, (30545), 68 states have call predecessors, (30545), 78 states have return successors, (38226), 30654 states have call predecessors, (38226), 30542 states have call successors, (38226) [2022-12-13 15:22:18,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206833 states to 206833 states and 346131 transitions. [2022-12-13 15:22:18,712 INFO L78 Accepts]: Start accepts. Automaton has 206833 states and 346131 transitions. Word has length 132 [2022-12-13 15:22:18,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:22:18,713 INFO L495 AbstractCegarLoop]: Abstraction has 206833 states and 346131 transitions. [2022-12-13 15:22:18,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 8 states have internal predecessors, (91), 5 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-12-13 15:22:18,713 INFO L276 IsEmpty]: Start isEmpty. Operand 206833 states and 346131 transitions. [2022-12-13 15:22:18,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-13 15:22:18,756 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:22:18,756 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:22:18,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 15:22:18,756 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:22:18,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:22:18,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1070746074, now seen corresponding path program 1 times [2022-12-13 15:22:18,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:22:18,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777031487] [2022-12-13 15:22:18,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:22:18,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:22:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:18,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:22:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:18,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:22:18,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:18,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:22:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:18,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:22:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:22:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:18,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:22:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:18,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 15:22:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:18,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 15:22:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:18,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 15:22:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:18,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 15:22:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:18,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:22:18,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:18,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 15:22:18,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:18,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 15:22:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:18,870 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:22:18,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:22:18,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777031487] [2022-12-13 15:22:18,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777031487] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:22:18,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:22:18,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:22:18,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629823360] [2022-12-13 15:22:18,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:22:18,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:22:18,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:22:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:22:18,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:22:18,872 INFO L87 Difference]: Start difference. First operand 206833 states and 346131 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:22:49,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:22:49,528 INFO L93 Difference]: Finished difference Result 313319 states and 542763 transitions. [2022-12-13 15:22:49,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 15:22:49,528 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2022-12-13 15:22:49,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:22:50,515 INFO L225 Difference]: With dead ends: 313319 [2022-12-13 15:22:50,515 INFO L226 Difference]: Without dead ends: 312685 [2022-12-13 15:22:50,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2022-12-13 15:22:50,611 INFO L413 NwaCegarLoop]: 271 mSDtfsCounter, 3812 mSDsluCounter, 1240 mSDsCounter, 0 mSdLazyCounter, 5477 mSolverCounterSat, 1901 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3822 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 7378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1901 IncrementalHoareTripleChecker+Valid, 5477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 15:22:50,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3822 Valid, 1511 Invalid, 7378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1901 Valid, 5477 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 15:22:50,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312685 states. [2022-12-13 15:23:19,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312685 to 310769. [2022-12-13 15:23:19,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310769 states, 264676 states have (on average 1.5737921080868684) internal successors, (416545), 264511 states have internal predecessors, (416545), 45906 states have call successors, (45906), 157 states have call predecessors, (45906), 186 states have return successors, (64475), 46130 states have call predecessors, (64475), 45898 states have call successors, (64475) [2022-12-13 15:23:20,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310769 states to 310769 states and 526926 transitions. [2022-12-13 15:23:20,832 INFO L78 Accepts]: Start accepts. Automaton has 310769 states and 526926 transitions. Word has length 132 [2022-12-13 15:23:20,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:23:20,832 INFO L495 AbstractCegarLoop]: Abstraction has 310769 states and 526926 transitions. [2022-12-13 15:23:20,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:23:20,832 INFO L276 IsEmpty]: Start isEmpty. Operand 310769 states and 526926 transitions. [2022-12-13 15:23:20,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-12-13 15:23:20,905 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:23:20,905 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:23:20,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 15:23:20,905 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:23:20,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:23:20,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1979456741, now seen corresponding path program 1 times [2022-12-13 15:23:20,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:23:20,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491431494] [2022-12-13 15:23:20,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:23:20,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:23:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:20,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:23:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:20,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:23:20,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:20,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:23:20,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:20,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:23:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:20,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:23:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:20,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:23:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:20,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 15:23:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:21,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 15:23:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 15:23:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:21,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 15:23:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:21,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 15:23:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:21,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 15:23:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:21,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 15:23:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:23:21,008 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-13 15:23:21,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:23:21,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491431494] [2022-12-13 15:23:21,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491431494] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:23:21,009 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:23:21,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:23:21,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897822057] [2022-12-13 15:23:21,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:23:21,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:23:21,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:23:21,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:23:21,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:23:21,010 INFO L87 Difference]: Start difference. First operand 310769 states and 526926 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:23:49,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:23:49,778 INFO L93 Difference]: Finished difference Result 315166 states and 543168 transitions. [2022-12-13 15:23:49,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 15:23:49,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 132 [2022-12-13 15:23:49,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:23:50,796 INFO L225 Difference]: With dead ends: 315166 [2022-12-13 15:23:50,796 INFO L226 Difference]: Without dead ends: 312906 [2022-12-13 15:23:50,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:23:50,893 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 1895 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 640 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 15:23:50,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1909 Valid, 717 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [640 Valid, 1649 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 15:23:51,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312906 states. [2022-12-13 15:24:21,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312906 to 310802. [2022-12-13 15:24:21,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310802 states, 264716 states have (on average 1.5737809577056165) internal successors, (416605), 264552 states have internal predecessors, (416605), 45861 states have call successors, (45861), 193 states have call predecessors, (45861), 224 states have return successors, (64407), 46084 states have call predecessors, (64407), 45854 states have call successors, (64407) [2022-12-13 15:24:22,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310802 states to 310802 states and 526873 transitions. [2022-12-13 15:24:22,233 INFO L78 Accepts]: Start accepts. Automaton has 310802 states and 526873 transitions. Word has length 132 [2022-12-13 15:24:22,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:24:22,233 INFO L495 AbstractCegarLoop]: Abstraction has 310802 states and 526873 transitions. [2022-12-13 15:24:22,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-12-13 15:24:22,233 INFO L276 IsEmpty]: Start isEmpty. Operand 310802 states and 526873 transitions. [2022-12-13 15:24:23,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-12-13 15:24:23,206 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:24:23,207 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:24:23,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 15:24:23,207 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:24:23,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:24:23,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1860267196, now seen corresponding path program 1 times [2022-12-13 15:24:23,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:24:23,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097347366] [2022-12-13 15:24:23,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:24:23,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:24:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:24:23,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:24:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:24:23,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:24:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:24:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:24:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 15:24:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:24:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:24:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:24:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:24:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 15:24:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 15:24:23,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 15:24:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 15:24:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:24:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:24:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 15:24:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:24:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-12-13 15:24:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-12-13 15:24:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-12-13 15:24:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-12-13 15:24:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-12-13 15:24:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:23,630 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-12-13 15:24:23,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:24:23,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097347366] [2022-12-13 15:24:23,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097347366] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:24:23,630 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:24:23,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:24:23,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469422463] [2022-12-13 15:24:23,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:24:23,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 15:24:23,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:24:23,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 15:24:23,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:24:23,632 INFO L87 Difference]: Start difference. First operand 310802 states and 526873 transitions. Second operand has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-13 15:24:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:24:57,132 INFO L93 Difference]: Finished difference Result 314192 states and 541731 transitions. [2022-12-13 15:24:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 15:24:57,133 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 226 [2022-12-13 15:24:57,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:24:58,169 INFO L225 Difference]: With dead ends: 314192 [2022-12-13 15:24:58,169 INFO L226 Difference]: Without dead ends: 312915 [2022-12-13 15:24:58,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=160, Invalid=440, Unknown=0, NotChecked=0, Total=600 [2022-12-13 15:24:58,266 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 1175 mSDsluCounter, 1114 mSDsCounter, 0 mSdLazyCounter, 3622 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1175 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 4190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 3622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 15:24:58,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1175 Valid, 1301 Invalid, 4190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 3622 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 15:24:58,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312915 states. [2022-12-13 15:25:31,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312915 to 310802. [2022-12-13 15:25:31,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310802 states, 264716 states have (on average 1.5737696248054518) internal successors, (416602), 264552 states have internal predecessors, (416602), 45861 states have call successors, (45861), 193 states have call predecessors, (45861), 224 states have return successors, (64407), 46084 states have call predecessors, (64407), 45854 states have call successors, (64407) [2022-12-13 15:25:32,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310802 states to 310802 states and 526870 transitions. [2022-12-13 15:25:32,376 INFO L78 Accepts]: Start accepts. Automaton has 310802 states and 526870 transitions. Word has length 226 [2022-12-13 15:25:32,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:25:32,376 INFO L495 AbstractCegarLoop]: Abstraction has 310802 states and 526870 transitions. [2022-12-13 15:25:32,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-13 15:25:32,376 INFO L276 IsEmpty]: Start isEmpty. Operand 310802 states and 526870 transitions. [2022-12-13 15:25:33,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-12-13 15:25:33,579 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:25:33,580 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:25:33,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 15:25:33,580 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:25:33,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:25:33,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2016247738, now seen corresponding path program 1 times [2022-12-13 15:25:33,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:25:33,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127669462] [2022-12-13 15:25:33,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:25:33,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:25:33,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:25:33,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:25:33,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:25:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:25:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:25:33,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:25:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 15:25:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:25:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:25:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:25:33,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:25:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 15:25:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 15:25:33,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 15:25:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 15:25:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:25:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:25:33,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 15:25:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:25:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-12-13 15:25:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-12-13 15:25:33,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-12-13 15:25:33,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-12-13 15:25:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-12-13 15:25:33,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:25:33,834 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-12-13 15:25:33,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:25:33,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127669462] [2022-12-13 15:25:33,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127669462] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:25:33,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:25:33,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:25:33,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266108492] [2022-12-13 15:25:33,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:25:33,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 15:25:33,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:25:33,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 15:25:33,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:25:33,835 INFO L87 Difference]: Start difference. First operand 310802 states and 526870 transitions. Second operand has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-13 15:26:05,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:26:05,298 INFO L93 Difference]: Finished difference Result 313331 states and 540411 transitions. [2022-12-13 15:26:05,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 15:26:05,299 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 226 [2022-12-13 15:26:05,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:26:06,250 INFO L225 Difference]: With dead ends: 313331 [2022-12-13 15:26:06,250 INFO L226 Difference]: Without dead ends: 312051 [2022-12-13 15:26:06,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2022-12-13 15:26:06,337 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 1348 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 3423 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1348 SdHoareTripleChecker+Valid, 1171 SdHoareTripleChecker+Invalid, 4033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 3423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-12-13 15:26:06,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1348 Valid, 1171 Invalid, 4033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 3423 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-12-13 15:26:06,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312051 states. [2022-12-13 15:26:37,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312051 to 309602. [2022-12-13 15:26:37,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309602 states, 263829 states have (on average 1.574436472108828) internal successors, (415382), 263639 states have internal predecessors, (415382), 45619 states have call successors, (45619), 139 states have call predecessors, (45619), 153 states have return successors, (64102), 45836 states have call predecessors, (64102), 45614 states have call successors, (64102) [2022-12-13 15:26:38,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309602 states to 309602 states and 525103 transitions. [2022-12-13 15:26:38,628 INFO L78 Accepts]: Start accepts. Automaton has 309602 states and 525103 transitions. Word has length 226 [2022-12-13 15:26:38,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:26:38,629 INFO L495 AbstractCegarLoop]: Abstraction has 309602 states and 525103 transitions. [2022-12-13 15:26:38,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 3 states have call successors, (25), 7 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2022-12-13 15:26:38,629 INFO L276 IsEmpty]: Start isEmpty. Operand 309602 states and 525103 transitions. [2022-12-13 15:26:39,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-12-13 15:26:39,742 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:26:39,742 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:26:39,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 15:26:39,743 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:26:39,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:26:39,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1782459419, now seen corresponding path program 1 times [2022-12-13 15:26:39,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:26:39,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113805439] [2022-12-13 15:26:39,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:26:39,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:26:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:26:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:26:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:26:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:26:40,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:26:40,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:26:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 15:26:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:26:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:26:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 15:26:40,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:26:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-12-13 15:26:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 15:26:40,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:26:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-12-13 15:26:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 15:26:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 15:26:40,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 15:26:40,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:26:40,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-12-13 15:26:40,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-12-13 15:26:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-12-13 15:26:40,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-12-13 15:26:40,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-12-13 15:26:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,396 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 15:26:40,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:26:40,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113805439] [2022-12-13 15:26:40,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113805439] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:26:40,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819342024] [2022-12-13 15:26:40,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:26:40,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:26:40,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:26:40,398 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:26:40,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 15:26:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:40,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 15:26:40,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:26:40,837 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-13 15:26:40,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:26:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-12-13 15:26:41,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819342024] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:26:41,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 15:26:41,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 9, 10] total 38 [2022-12-13 15:26:41,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227917939] [2022-12-13 15:26:41,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 15:26:41,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-13 15:26:41,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:26:41,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-13 15:26:41,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1301, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 15:26:41,297 INFO L87 Difference]: Start difference. First operand 309602 states and 525103 transitions. Second operand has 38 states, 36 states have (on average 9.86111111111111) internal successors, (355), 30 states have internal predecessors, (355), 12 states have call successors, (63), 10 states have call predecessors, (63), 16 states have return successors, (61), 15 states have call predecessors, (61), 12 states have call successors, (61) [2022-12-13 15:29:05,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:29:05,782 INFO L93 Difference]: Finished difference Result 940144 states and 1646206 transitions. [2022-12-13 15:29:05,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 218 states. [2022-12-13 15:29:05,784 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 9.86111111111111) internal successors, (355), 30 states have internal predecessors, (355), 12 states have call successors, (63), 10 states have call predecessors, (63), 16 states have return successors, (61), 15 states have call predecessors, (61), 12 states have call successors, (61) Word has length 227 [2022-12-13 15:29:05,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:29:09,707 INFO L225 Difference]: With dead ends: 940144 [2022-12-13 15:29:09,707 INFO L226 Difference]: Without dead ends: 932877 [2022-12-13 15:29:10,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 767 GetRequests, 515 SyntacticMatches, 0 SemanticMatches, 252 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24359 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=5946, Invalid=58316, Unknown=0, NotChecked=0, Total=64262 [2022-12-13 15:29:10,033 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 17106 mSDsluCounter, 7179 mSDsCounter, 0 mSdLazyCounter, 89222 mSolverCounterSat, 16911 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17106 SdHoareTripleChecker+Valid, 7476 SdHoareTripleChecker+Invalid, 106133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 16911 IncrementalHoareTripleChecker+Valid, 89222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:29:10,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17106 Valid, 7476 Invalid, 106133 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [16911 Valid, 89222 Invalid, 0 Unknown, 0 Unchecked, 38.5s Time] [2022-12-13 15:29:10,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932877 states. [2022-12-13 15:30:48,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932877 to 920666. [2022-12-13 15:30:49,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 920666 states, 784645 states have (on average 1.574891830063277) internal successors, (1235731), 783801 states have internal predecessors, (1235731), 135555 states have call successors, (135555), 391 states have call predecessors, (135555), 465 states have return successors, (212946), 136508 states have call predecessors, (212946), 135541 states have call successors, (212946) [2022-12-13 15:30:52,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 920666 states to 920666 states and 1584232 transitions. [2022-12-13 15:30:52,601 INFO L78 Accepts]: Start accepts. Automaton has 920666 states and 1584232 transitions. Word has length 227 [2022-12-13 15:30:52,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:30:52,601 INFO L495 AbstractCegarLoop]: Abstraction has 920666 states and 1584232 transitions. [2022-12-13 15:30:52,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 9.86111111111111) internal successors, (355), 30 states have internal predecessors, (355), 12 states have call successors, (63), 10 states have call predecessors, (63), 16 states have return successors, (61), 15 states have call predecessors, (61), 12 states have call successors, (61) [2022-12-13 15:30:52,601 INFO L276 IsEmpty]: Start isEmpty. Operand 920666 states and 1584232 transitions. [2022-12-13 15:30:56,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-12-13 15:30:56,739 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:30:56,739 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:30:56,745 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 15:30:56,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 15:30:56,941 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:30:56,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:30:56,942 INFO L85 PathProgramCache]: Analyzing trace with hash 871520346, now seen corresponding path program 1 times [2022-12-13 15:30:56,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:30:56,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175236124] [2022-12-13 15:30:56,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:30:56,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:30:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:30:57,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:30:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 15:30:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 15:30:57,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 15:30:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:30:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 15:30:57,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 15:30:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:30:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 15:30:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-12-13 15:30:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:30:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 15:30:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-12-13 15:30:57,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-12-13 15:30:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 15:30:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 15:30:57,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 15:30:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 15:30:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:30:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-12-13 15:30:57,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-12-13 15:30:57,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2022-12-13 15:30:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-12-13 15:30:57,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-12-13 15:30:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 28 proven. 14 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-12-13 15:30:57,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:30:57,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175236124] [2022-12-13 15:30:57,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175236124] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:30:57,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016449122] [2022-12-13 15:30:57,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:30:57,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:30:57,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:30:57,573 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:30:57,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e74bd67-b5e8-475a-afa2-af9946d637b4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 15:30:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:30:57,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 1693 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:30:57,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:30:57,926 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-12-13 15:30:57,926 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:30:57,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016449122] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:30:57,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:30:57,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [20] total 23 [2022-12-13 15:30:57,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964332112] [2022-12-13 15:30:57,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:30:57,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:30:57,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:30:57,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:30:57,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2022-12-13 15:30:57,927 INFO L87 Difference]: Start difference. First operand 920666 states and 1584232 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 3 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21)