./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec3_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec3_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa --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 bcbcb0270b2ee5ae38e5dd3a933d2995b5c0488c9590f16a6543c0c656cfb023 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 00:34:45,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 00:34:45,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 00:34:45,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 00:34:45,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 00:34:45,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 00:34:45,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 00:34:45,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 00:34:45,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 00:34:45,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 00:34:45,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 00:34:45,911 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 00:34:45,911 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 00:34:45,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 00:34:45,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 00:34:45,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 00:34:45,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 00:34:45,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 00:34:45,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 00:34:45,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 00:34:45,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 00:34:45,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 00:34:45,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 00:34:45,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 00:34:45,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 00:34:45,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 00:34:45,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 00:34:45,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 00:34:45,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 00:34:45,929 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 00:34:45,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 00:34:45,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 00:34:45,931 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 00:34:45,931 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 00:34:45,932 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 00:34:45,932 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 00:34:45,933 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 00:34:45,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 00:34:45,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 00:34:45,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 00:34:45,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 00:34:45,935 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 00:34:45,951 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 00:34:45,951 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 00:34:45,952 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 00:34:45,952 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 00:34:45,952 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 00:34:45,952 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 00:34:45,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 00:34:45,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 00:34:45,953 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 00:34:45,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 00:34:45,953 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 00:34:45,953 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 00:34:45,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 00:34:45,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 00:34:45,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 00:34:45,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 00:34:45,954 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 00:34:45,954 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 00:34:45,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 00:34:45,954 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 00:34:45,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 00:34:45,955 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 00:34:45,955 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 00:34:45,955 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 00:34:45,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:34:45,955 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 00:34:45,955 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 00:34:45,955 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 00:34:45,956 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 00:34:45,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 00:34:45,956 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 00:34:45,956 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 00:34:45,956 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 00:34:45,956 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 00:34:45,956 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bcbcb0270b2ee5ae38e5dd3a933d2995b5c0488c9590f16a6543c0c656cfb023 [2021-12-07 00:34:46,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 00:34:46,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 00:34:46,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 00:34:46,163 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 00:34:46,164 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 00:34:46,165 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/email_spec3_product30.cil.c [2021-12-07 00:34:46,216 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/data/6b528f9c7/b4b23e8ff28045a8a61230c462127631/FLAGb44f4ef2d [2021-12-07 00:34:46,652 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 00:34:46,652 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/sv-benchmarks/c/product-lines/email_spec3_product30.cil.c [2021-12-07 00:34:46,667 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/data/6b528f9c7/b4b23e8ff28045a8a61230c462127631/FLAGb44f4ef2d [2021-12-07 00:34:46,678 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/data/6b528f9c7/b4b23e8ff28045a8a61230c462127631 [2021-12-07 00:34:46,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 00:34:46,681 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 00:34:46,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 00:34:46,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 00:34:46,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 00:34:46,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:34:46" (1/1) ... [2021-12-07 00:34:46,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f393c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:46, skipping insertion in model container [2021-12-07 00:34:46,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 12:34:46" (1/1) ... [2021-12-07 00:34:46,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 00:34:46,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 00:34:46,889 WARN L230 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_4e045348-f406-4001-bb0f-0b98f1030415/sv-benchmarks/c/product-lines/email_spec3_product30.cil.c[5243,5256] [2021-12-07 00:34:47,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:34:47,066 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 00:34:47,079 WARN L230 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_4e045348-f406-4001-bb0f-0b98f1030415/sv-benchmarks/c/product-lines/email_spec3_product30.cil.c[5243,5256] [2021-12-07 00:34:47,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 00:34:47,159 INFO L208 MainTranslator]: Completed translation [2021-12-07 00:34:47,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:47 WrapperNode [2021-12-07 00:34:47,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 00:34:47,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 00:34:47,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 00:34:47,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 00:34:47,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:47" (1/1) ... [2021-12-07 00:34:47,188 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:47" (1/1) ... [2021-12-07 00:34:47,227 INFO L137 Inliner]: procedures = 132, calls = 227, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 941 [2021-12-07 00:34:47,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 00:34:47,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 00:34:47,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 00:34:47,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 00:34:47,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:47" (1/1) ... [2021-12-07 00:34:47,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:47" (1/1) ... [2021-12-07 00:34:47,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:47" (1/1) ... [2021-12-07 00:34:47,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:47" (1/1) ... [2021-12-07 00:34:47,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:47" (1/1) ... [2021-12-07 00:34:47,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:47" (1/1) ... [2021-12-07 00:34:47,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:47" (1/1) ... [2021-12-07 00:34:47,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 00:34:47,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 00:34:47,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 00:34:47,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 00:34:47,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:47" (1/1) ... [2021-12-07 00:34:47,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 00:34:47,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:34:47,319 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 00:34:47,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 00:34:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-07 00:34:47,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-07 00:34:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-07 00:34:47,349 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-07 00:34:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-07 00:34:47,349 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-07 00:34:47,349 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-07 00:34:47,350 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-07 00:34:47,350 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-07 00:34:47,350 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-07 00:34:47,350 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-07 00:34:47,350 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-07 00:34:47,350 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-07 00:34:47,350 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-07 00:34:47,350 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-07 00:34:47,350 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-07 00:34:47,350 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-07 00:34:47,350 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-07 00:34:47,351 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-07 00:34:47,351 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-07 00:34:47,351 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-07 00:34:47,351 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-07 00:34:47,351 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-07 00:34:47,351 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-07 00:34:47,351 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-07 00:34:47,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 00:34:47,351 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-07 00:34:47,351 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-07 00:34:47,351 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-07 00:34:47,351 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-07 00:34:47,351 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-07 00:34:47,351 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-07 00:34:47,351 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-07 00:34:47,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-07 00:34:47,352 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-07 00:34:47,352 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-07 00:34:47,352 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-07 00:34:47,352 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-07 00:34:47,352 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-07 00:34:47,352 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-07 00:34:47,352 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-07 00:34:47,352 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-07 00:34:47,352 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-07 00:34:47,352 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-07 00:34:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-07 00:34:47,353 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-07 00:34:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-07 00:34:47,353 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-07 00:34:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 00:34:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-07 00:34:47,353 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-07 00:34:47,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 00:34:47,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 00:34:47,513 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 00:34:47,515 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 00:34:48,025 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 00:34:48,034 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 00:34:48,034 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-07 00:34:48,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:34:48 BoogieIcfgContainer [2021-12-07 00:34:48,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 00:34:48,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 00:34:48,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 00:34:48,040 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 00:34:48,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 12:34:46" (1/3) ... [2021-12-07 00:34:48,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d04182a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:34:48, skipping insertion in model container [2021-12-07 00:34:48,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 12:34:47" (2/3) ... [2021-12-07 00:34:48,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d04182a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 12:34:48, skipping insertion in model container [2021-12-07 00:34:48,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 12:34:48" (3/3) ... [2021-12-07 00:34:48,042 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product30.cil.c [2021-12-07 00:34:48,046 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 00:34:48,046 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 00:34:48,084 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 00:34:48,089 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 00:34:48,089 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 00:34:48,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 274 states have (on average 1.510948905109489) internal successors, (414), 280 states have internal predecessors, (414), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) [2021-12-07 00:34:48,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-07 00:34:48,125 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:48,126 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:34:48,126 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:34:48,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:48,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1804830783, now seen corresponding path program 1 times [2021-12-07 00:34:48,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:48,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238694760] [2021-12-07 00:34:48,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:48,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:48,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:34:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:34:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:34:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:34:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:34:48,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-07 00:34:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-07 00:34:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-07 00:34:48,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:34:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-07 00:34:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-07 00:34:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-07 00:34:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:34:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-07 00:34:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-07 00:34:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-07 00:34:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-07 00:34:48,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:48,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238694760] [2021-12-07 00:34:48,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238694760] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:48,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1957437801] [2021-12-07 00:34:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:48,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:48,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:34:48,523 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:34:48,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 00:34:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:48,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-07 00:34:48,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:34:48,895 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-07 00:34:48,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:34:48,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1957437801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:34:48,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:34:48,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-07 00:34:48,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880407801] [2021-12-07 00:34:48,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:34:48,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 00:34:48,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:48,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 00:34:48,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:34:48,924 INFO L87 Difference]: Start difference. First operand has 358 states, 274 states have (on average 1.510948905109489) internal successors, (414), 280 states have internal predecessors, (414), 58 states have call successors, (58), 24 states have call predecessors, (58), 24 states have return successors, (58), 57 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:34:48,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:48,967 INFO L93 Difference]: Finished difference Result 561 states and 814 transitions. [2021-12-07 00:34:48,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 00:34:48,969 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 130 [2021-12-07 00:34:48,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:48,980 INFO L225 Difference]: With dead ends: 561 [2021-12-07 00:34:48,981 INFO L226 Difference]: Without dead ends: 350 [2021-12-07 00:34:48,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:34:48,988 INFO L933 BasicCegarLoop]: 524 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, 524 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 [2021-12-07 00:34:48,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:34:49,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-07 00:34:49,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 350. [2021-12-07 00:34:49,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 268 states have (on average 1.5037313432835822) internal successors, (403), 272 states have internal predecessors, (403), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-12-07 00:34:49,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 516 transitions. [2021-12-07 00:34:49,040 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 516 transitions. Word has length 130 [2021-12-07 00:34:49,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:49,041 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 516 transitions. [2021-12-07 00:34:49,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:34:49,041 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 516 transitions. [2021-12-07 00:34:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-07 00:34:49,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:49,047 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:34:49,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 00:34:49,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:49,248 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:34:49,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:49,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1084620292, now seen corresponding path program 1 times [2021-12-07 00:34:49,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:49,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446325176] [2021-12-07 00:34:49,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:49,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:34:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:34:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:34:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:34:49,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:34:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-07 00:34:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-07 00:34:49,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-07 00:34:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-07 00:34:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:34:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:34:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-07 00:34:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-07 00:34:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-07 00:34:49,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:34:49,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-07 00:34:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,407 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-07 00:34:49,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:49,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446325176] [2021-12-07 00:34:49,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446325176] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:49,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428946056] [2021-12-07 00:34:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:49,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:49,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:34:49,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:34:49,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 00:34:49,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:49,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 1199 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-07 00:34:49,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:34:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-07 00:34:49,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:34:49,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428946056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:34:49,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:34:49,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-07 00:34:49,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587029365] [2021-12-07 00:34:49,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:34:49,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:34:49,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:49,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:34:49,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:34:49,720 INFO L87 Difference]: Start difference. First operand 350 states and 516 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:34:49,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:49,752 INFO L93 Difference]: Finished difference Result 550 states and 791 transitions. [2021-12-07 00:34:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:34:49,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 131 [2021-12-07 00:34:49,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:49,758 INFO L225 Difference]: With dead ends: 550 [2021-12-07 00:34:49,758 INFO L226 Difference]: Without dead ends: 353 [2021-12-07 00:34:49,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:34:49,761 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 1 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1026 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 [2021-12-07 00:34:49,762 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1026 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:34:49,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-12-07 00:34:49,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 352. [2021-12-07 00:34:49,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 270 states have (on average 1.5) internal successors, (405), 274 states have internal predecessors, (405), 58 states have call successors, (58), 24 states have call predecessors, (58), 23 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2021-12-07 00:34:49,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 518 transitions. [2021-12-07 00:34:49,791 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 518 transitions. Word has length 131 [2021-12-07 00:34:49,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:49,791 INFO L470 AbstractCegarLoop]: Abstraction has 352 states and 518 transitions. [2021-12-07 00:34:49,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:34:49,792 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 518 transitions. [2021-12-07 00:34:49,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-07 00:34:49,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:49,795 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:34:49,816 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 00:34:49,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:49,997 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:34:49,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:49,999 INFO L85 PathProgramCache]: Analyzing trace with hash 877084948, now seen corresponding path program 1 times [2021-12-07 00:34:50,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:50,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109493393] [2021-12-07 00:34:50,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:50,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:34:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:34:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:34:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:34:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:34:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-07 00:34:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-07 00:34:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-07 00:34:50,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-07 00:34:50,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-07 00:34:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-07 00:34:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 00:34:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:34:50,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:34:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-07 00:34:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-07 00:34:50,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,252 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-07 00:34:50,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:50,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109493393] [2021-12-07 00:34:50,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109493393] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:50,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849532698] [2021-12-07 00:34:50,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:50,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:50,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:34:50,254 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:34:50,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 00:34:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 1226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:34:50,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:34:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-07 00:34:50,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:34:50,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849532698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:34:50,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:34:50,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-07 00:34:50,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121820266] [2021-12-07 00:34:50,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:34:50,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-07 00:34:50,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:50,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-07 00:34:50,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:34:50,530 INFO L87 Difference]: Start difference. First operand 352 states and 518 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:34:50,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:50,554 INFO L93 Difference]: Finished difference Result 734 states and 1095 transitions. [2021-12-07 00:34:50,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-07 00:34:50,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 140 [2021-12-07 00:34:50,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:50,557 INFO L225 Difference]: With dead ends: 734 [2021-12-07 00:34:50,557 INFO L226 Difference]: Without dead ends: 409 [2021-12-07 00:34:50,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-07 00:34:50,560 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 107 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1001 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 [2021-12-07 00:34:50,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 1001 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:34:50,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-12-07 00:34:50,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 401. [2021-12-07 00:34:50,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 308 states have (on average 1.5162337662337662) internal successors, (467), 312 states have internal predecessors, (467), 69 states have call successors, (69), 24 states have call predecessors, (69), 23 states have return successors, (66), 66 states have call predecessors, (66), 66 states have call successors, (66) [2021-12-07 00:34:50,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 602 transitions. [2021-12-07 00:34:50,578 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 602 transitions. Word has length 140 [2021-12-07 00:34:50,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:50,579 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 602 transitions. [2021-12-07 00:34:50,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:34:50,579 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 602 transitions. [2021-12-07 00:34:50,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-07 00:34:50,581 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:50,582 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2021-12-07 00:34:50,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 00:34:50,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:50,783 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:34:50,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:50,785 INFO L85 PathProgramCache]: Analyzing trace with hash 888237591, now seen corresponding path program 1 times [2021-12-07 00:34:50,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:50,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238530673] [2021-12-07 00:34:50,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:50,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:34:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:34:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-07 00:34:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-07 00:34:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-07 00:34:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-07 00:34:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:34:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-07 00:34:50,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-07 00:34:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-07 00:34:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:34:50,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:34:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:50,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:34:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-07 00:34:51,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:34:51,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:34:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-07 00:34:51,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:51,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238530673] [2021-12-07 00:34:51,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238530673] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:51,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988736801] [2021-12-07 00:34:51,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:51,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:51,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:34:51,011 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:34:51,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-07 00:34:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 1233 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-07 00:34:51,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:34:51,326 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:34:51,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:34:51,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988736801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:34:51,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:34:51,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-07 00:34:51,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223406284] [2021-12-07 00:34:51,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:34:51,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:34:51,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:51,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:34:51,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:34:51,329 INFO L87 Difference]: Start difference. First operand 401 states and 602 transitions. Second operand has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-07 00:34:51,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:51,377 INFO L93 Difference]: Finished difference Result 793 states and 1194 transitions. [2021-12-07 00:34:51,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:34:51,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 141 [2021-12-07 00:34:51,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:51,382 INFO L225 Difference]: With dead ends: 793 [2021-12-07 00:34:51,382 INFO L226 Difference]: Without dead ends: 403 [2021-12-07 00:34:51,384 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:34:51,385 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 125 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:34:51,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1884 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:34:51,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-12-07 00:34:51,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-12-07 00:34:51,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 309 states have (on average 1.5145631067961165) internal successors, (468), 314 states have internal predecessors, (468), 69 states have call successors, (69), 24 states have call predecessors, (69), 24 states have return successors, (68), 66 states have call predecessors, (68), 66 states have call successors, (68) [2021-12-07 00:34:51,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 605 transitions. [2021-12-07 00:34:51,410 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 605 transitions. Word has length 141 [2021-12-07 00:34:51,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:51,411 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 605 transitions. [2021-12-07 00:34:51,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.75) internal successors, (87), 5 states have internal predecessors, (87), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-07 00:34:51,411 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 605 transitions. [2021-12-07 00:34:51,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-07 00:34:51,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:51,415 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-12-07 00:34:51,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-07 00:34:51,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:51,616 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:34:51,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:51,617 INFO L85 PathProgramCache]: Analyzing trace with hash -757453659, now seen corresponding path program 1 times [2021-12-07 00:34:51,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:51,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406678894] [2021-12-07 00:34:51,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:51,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:34:51,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:34:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:34:51,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-07 00:34:51,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-07 00:34:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-07 00:34:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-07 00:34:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-07 00:34:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-07 00:34:51,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:34:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 00:34:51,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 00:34:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-07 00:34:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-07 00:34:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-07 00:34:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-07 00:34:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:51,848 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-07 00:34:51,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:51,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406678894] [2021-12-07 00:34:51,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406678894] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:51,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519831262] [2021-12-07 00:34:51,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:51,849 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:51,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:34:51,849 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:34:51,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-07 00:34:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:34:52,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:34:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-07 00:34:52,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:34:52,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519831262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:34:52,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:34:52,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-07 00:34:52,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459370407] [2021-12-07 00:34:52,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:34:52,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:34:52,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:52,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:34:52,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:34:52,166 INFO L87 Difference]: Start difference. First operand 403 states and 605 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-07 00:34:52,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:52,226 INFO L93 Difference]: Finished difference Result 795 states and 1199 transitions. [2021-12-07 00:34:52,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:34:52,227 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 142 [2021-12-07 00:34:52,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:52,231 INFO L225 Difference]: With dead ends: 795 [2021-12-07 00:34:52,231 INFO L226 Difference]: Without dead ends: 405 [2021-12-07 00:34:52,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-07 00:34:52,234 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 124 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:34:52,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1873 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:34:52,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-12-07 00:34:52,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 405. [2021-12-07 00:34:52,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 310 states have (on average 1.5129032258064516) internal successors, (469), 316 states have internal predecessors, (469), 69 states have call successors, (69), 24 states have call predecessors, (69), 25 states have return successors, (73), 66 states have call predecessors, (73), 66 states have call successors, (73) [2021-12-07 00:34:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 611 transitions. [2021-12-07 00:34:52,260 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 611 transitions. Word has length 142 [2021-12-07 00:34:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:52,260 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 611 transitions. [2021-12-07 00:34:52,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-07 00:34:52,260 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 611 transitions. [2021-12-07 00:34:52,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-07 00:34:52,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:52,264 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:34:52,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-07 00:34:52,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:52,464 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:34:52,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:52,465 INFO L85 PathProgramCache]: Analyzing trace with hash 21931431, now seen corresponding path program 1 times [2021-12-07 00:34:52,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:52,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585147536] [2021-12-07 00:34:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:52,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:52,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:34:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:34:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:34:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:34:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-07 00:34:52,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-07 00:34:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-07 00:34:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-07 00:34:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:34:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 00:34:52,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:34:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-07 00:34:52,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-07 00:34:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-07 00:34:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-07 00:34:52,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-07 00:34:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:52,582 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-07 00:34:52,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:52,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585147536] [2021-12-07 00:34:52,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585147536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:34:52,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:34:52,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:34:52,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477935418] [2021-12-07 00:34:52,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:34:52,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:34:52,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:52,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:34:52,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:34:52,584 INFO L87 Difference]: Start difference. First operand 405 states and 611 transitions. Second operand has 9 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-07 00:34:53,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:53,788 INFO L93 Difference]: Finished difference Result 910 states and 1376 transitions. [2021-12-07 00:34:53,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:34:53,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 143 [2021-12-07 00:34:53,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:53,792 INFO L225 Difference]: With dead ends: 910 [2021-12-07 00:34:53,792 INFO L226 Difference]: Without dead ends: 528 [2021-12-07 00:34:53,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:34:53,794 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 1237 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 1696 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 1696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:34:53,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 1655 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 1696 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 00:34:53,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-12-07 00:34:53,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 405. [2021-12-07 00:34:53,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 310 states have (on average 1.5129032258064516) internal successors, (469), 316 states have internal predecessors, (469), 69 states have call successors, (69), 24 states have call predecessors, (69), 25 states have return successors, (72), 66 states have call predecessors, (72), 66 states have call successors, (72) [2021-12-07 00:34:53,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 610 transitions. [2021-12-07 00:34:53,820 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 610 transitions. Word has length 143 [2021-12-07 00:34:53,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:53,820 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 610 transitions. [2021-12-07 00:34:53,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-07 00:34:53,821 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 610 transitions. [2021-12-07 00:34:53,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-07 00:34:53,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:53,823 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:34:53,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-07 00:34:53,823 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:34:53,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:53,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1166385811, now seen corresponding path program 2 times [2021-12-07 00:34:53,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:53,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983220347] [2021-12-07 00:34:53,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:53,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:53,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:34:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:34:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:34:53,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:34:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-07 00:34:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-07 00:34:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-07 00:34:53,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-07 00:34:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-07 00:34:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:34:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-07 00:34:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-07 00:34:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:34:53,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-07 00:34:53,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-07 00:34:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-07 00:34:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-07 00:34:53,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:53,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983220347] [2021-12-07 00:34:53,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983220347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:34:53,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:34:53,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:34:53,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360211972] [2021-12-07 00:34:53,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:34:53,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:34:53,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:53,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:34:53,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:34:53,939 INFO L87 Difference]: Start difference. First operand 405 states and 610 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-07 00:34:55,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:55,035 INFO L93 Difference]: Finished difference Result 912 states and 1379 transitions. [2021-12-07 00:34:55,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:34:55,035 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 144 [2021-12-07 00:34:55,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:55,040 INFO L225 Difference]: With dead ends: 912 [2021-12-07 00:34:55,040 INFO L226 Difference]: Without dead ends: 530 [2021-12-07 00:34:55,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-07 00:34:55,042 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 1232 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 2162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-07 00:34:55,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 1656 Invalid, 2162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [456 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-07 00:34:55,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-12-07 00:34:55,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 407. [2021-12-07 00:34:55,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 311 states have (on average 1.5112540192926045) internal successors, (470), 318 states have internal predecessors, (470), 69 states have call successors, (69), 24 states have call predecessors, (69), 26 states have return successors, (74), 66 states have call predecessors, (74), 66 states have call successors, (74) [2021-12-07 00:34:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 613 transitions. [2021-12-07 00:34:55,075 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 613 transitions. Word has length 144 [2021-12-07 00:34:55,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:55,075 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 613 transitions. [2021-12-07 00:34:55,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 5 states have internal predecessors, (86), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-07 00:34:55,076 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 613 transitions. [2021-12-07 00:34:55,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-07 00:34:55,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:55,078 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:34:55,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-07 00:34:55,078 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:34:55,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:55,078 INFO L85 PathProgramCache]: Analyzing trace with hash -311728212, now seen corresponding path program 1 times [2021-12-07 00:34:55,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:55,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874911227] [2021-12-07 00:34:55,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:55,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:34:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:34:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:34:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:34:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:34:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-07 00:34:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-07 00:34:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:34:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:34:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-07 00:34:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 00:34:55,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:34:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-07 00:34:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-07 00:34:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-07 00:34:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-07 00:34:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:55,206 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-07 00:34:55,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:55,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874911227] [2021-12-07 00:34:55,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874911227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:34:55,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:34:55,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-07 00:34:55,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054292566] [2021-12-07 00:34:55,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:34:55,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:34:55,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:55,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:34:55,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:34:55,208 INFO L87 Difference]: Start difference. First operand 407 states and 613 transitions. Second operand has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-07 00:34:56,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:56,505 INFO L93 Difference]: Finished difference Result 910 states and 1374 transitions. [2021-12-07 00:34:56,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:34:56,506 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 145 [2021-12-07 00:34:56,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:56,509 INFO L225 Difference]: With dead ends: 910 [2021-12-07 00:34:56,509 INFO L226 Difference]: Without dead ends: 530 [2021-12-07 00:34:56,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:34:56,510 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 1351 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 3050 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 3572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 3050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:34:56,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1351 Valid, 2132 Invalid, 3572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 3050 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-07 00:34:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-12-07 00:34:56,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 407. [2021-12-07 00:34:56,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 311 states have (on average 1.5112540192926045) internal successors, (470), 318 states have internal predecessors, (470), 69 states have call successors, (69), 24 states have call predecessors, (69), 26 states have return successors, (73), 66 states have call predecessors, (73), 66 states have call successors, (73) [2021-12-07 00:34:56,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 612 transitions. [2021-12-07 00:34:56,530 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 612 transitions. Word has length 145 [2021-12-07 00:34:56,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:56,531 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 612 transitions. [2021-12-07 00:34:56,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 8 states have internal predecessors, (90), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-07 00:34:56,531 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 612 transitions. [2021-12-07 00:34:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-07 00:34:56,533 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:56,533 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:34:56,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-07 00:34:56,533 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:34:56,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:56,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1467632570, now seen corresponding path program 2 times [2021-12-07 00:34:56,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:56,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583692349] [2021-12-07 00:34:56,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:56,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:34:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:34:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:34:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:34:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:34:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-07 00:34:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-07 00:34:56,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:34:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-07 00:34:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:34:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 00:34:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 00:34:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:34:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-07 00:34:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-07 00:34:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-07 00:34:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:56,652 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-07 00:34:56,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:56,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583692349] [2021-12-07 00:34:56,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583692349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:34:56,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:34:56,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-07 00:34:56,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931027911] [2021-12-07 00:34:56,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:34:56,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:34:56,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:56,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:34:56,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:34:56,654 INFO L87 Difference]: Start difference. First operand 407 states and 612 transitions. Second operand has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-07 00:34:57,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:34:57,846 INFO L93 Difference]: Finished difference Result 912 states and 1380 transitions. [2021-12-07 00:34:57,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-07 00:34:57,847 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 146 [2021-12-07 00:34:57,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:34:57,849 INFO L225 Difference]: With dead ends: 912 [2021-12-07 00:34:57,850 INFO L226 Difference]: Without dead ends: 532 [2021-12-07 00:34:57,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:34:57,851 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 1339 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 3135 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 3638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 3135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:34:57,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1339 Valid, 2158 Invalid, 3638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 3135 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-07 00:34:57,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-12-07 00:34:57,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 409. [2021-12-07 00:34:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 312 states have (on average 1.5096153846153846) internal successors, (471), 320 states have internal predecessors, (471), 69 states have call successors, (69), 24 states have call predecessors, (69), 27 states have return successors, (78), 66 states have call predecessors, (78), 66 states have call successors, (78) [2021-12-07 00:34:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 618 transitions. [2021-12-07 00:34:57,871 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 618 transitions. Word has length 146 [2021-12-07 00:34:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:34:57,872 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 618 transitions. [2021-12-07 00:34:57,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-07 00:34:57,872 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 618 transitions. [2021-12-07 00:34:57,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-07 00:34:57,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:34:57,873 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:34:57,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-07 00:34:57,874 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:34:57,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:34:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2142759503, now seen corresponding path program 1 times [2021-12-07 00:34:57,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:34:57,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026980481] [2021-12-07 00:34:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:57,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:34:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:34:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:34:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:34:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:34:57,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:34:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:34:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-07 00:34:57,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:34:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 00:34:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-07 00:34:57,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-07 00:34:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:34:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:34:57,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-07 00:34:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:34:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:34:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-07 00:34:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:57,980 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-07 00:34:57,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:34:57,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026980481] [2021-12-07 00:34:57,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026980481] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:34:57,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005749834] [2021-12-07 00:34:57,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:34:57,981 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:34:57,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:34:57,981 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:34:57,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-07 00:34:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:34:58,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-07 00:34:58,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:34:58,235 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 00:34:58,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:34:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 00:34:58,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005749834] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:34:58,352 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:34:58,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-07 00:34:58,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49667920] [2021-12-07 00:34:58,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:34:58,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-07 00:34:58,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:34:58,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-07 00:34:58,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-07 00:34:58,354 INFO L87 Difference]: Start difference. First operand 409 states and 618 transitions. Second operand has 15 states, 14 states have (on average 10.571428571428571) internal successors, (148), 11 states have internal predecessors, (148), 4 states have call successors, (40), 6 states have call predecessors, (40), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2021-12-07 00:35:00,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:00,276 INFO L93 Difference]: Finished difference Result 1591 states and 2608 transitions. [2021-12-07 00:35:00,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 00:35:00,276 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 10.571428571428571) internal successors, (148), 11 states have internal predecessors, (148), 4 states have call successors, (40), 6 states have call predecessors, (40), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 147 [2021-12-07 00:35:00,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:00,283 INFO L225 Difference]: With dead ends: 1591 [2021-12-07 00:35:00,283 INFO L226 Difference]: Without dead ends: 1213 [2021-12-07 00:35:00,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-07 00:35:00,286 INFO L933 BasicCegarLoop]: 752 mSDtfsCounter, 2978 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 4505 mSolverCounterSat, 1180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2980 SdHoareTripleChecker+Valid, 3807 SdHoareTripleChecker+Invalid, 5685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1180 IncrementalHoareTripleChecker+Valid, 4505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:00,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2980 Valid, 3807 Invalid, 5685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1180 Valid, 4505 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-07 00:35:00,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2021-12-07 00:35:00,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 737. [2021-12-07 00:35:00,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 576 states have (on average 1.5659722222222223) internal successors, (902), 584 states have internal predecessors, (902), 133 states have call successors, (133), 24 states have call predecessors, (133), 27 states have return successors, (152), 130 states have call predecessors, (152), 130 states have call successors, (152) [2021-12-07 00:35:00,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1187 transitions. [2021-12-07 00:35:00,330 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1187 transitions. Word has length 147 [2021-12-07 00:35:00,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:00,330 INFO L470 AbstractCegarLoop]: Abstraction has 737 states and 1187 transitions. [2021-12-07 00:35:00,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 10.571428571428571) internal successors, (148), 11 states have internal predecessors, (148), 4 states have call successors, (40), 6 states have call predecessors, (40), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2021-12-07 00:35:00,331 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1187 transitions. [2021-12-07 00:35:00,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-07 00:35:00,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:00,334 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:35:00,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-07 00:35:00,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-07 00:35:00,536 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:00,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:00,537 INFO L85 PathProgramCache]: Analyzing trace with hash 631914593, now seen corresponding path program 1 times [2021-12-07 00:35:00,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:00,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014609311] [2021-12-07 00:35:00,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:00,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:00,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:00,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-07 00:35:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-07 00:35:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-07 00:35:00,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:35:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-07 00:35:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-07 00:35:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-07 00:35:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-07 00:35:00,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:35:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-07 00:35:00,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-07 00:35:00,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:00,657 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 00:35:00,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:00,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014609311] [2021-12-07 00:35:00,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014609311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:00,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:00,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:00,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8717380] [2021-12-07 00:35:00,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:00,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:00,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:00,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:00,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:00,659 INFO L87 Difference]: Start difference. First operand 737 states and 1187 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:01,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:01,390 INFO L93 Difference]: Finished difference Result 1827 states and 3011 transitions. [2021-12-07 00:35:01,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:01,391 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 150 [2021-12-07 00:35:01,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:01,397 INFO L225 Difference]: With dead ends: 1827 [2021-12-07 00:35:01,397 INFO L226 Difference]: Without dead ends: 1168 [2021-12-07 00:35:01,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:01,399 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 1234 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:01,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 1350 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:35:01,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2021-12-07 00:35:01,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1037. [2021-12-07 00:35:01,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1037 states, 812 states have (on average 1.5849753694581281) internal successors, (1287), 820 states have internal predecessors, (1287), 197 states have call successors, (197), 24 states have call predecessors, (197), 27 states have return successors, (226), 194 states have call predecessors, (226), 194 states have call successors, (226) [2021-12-07 00:35:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1710 transitions. [2021-12-07 00:35:01,455 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1710 transitions. Word has length 150 [2021-12-07 00:35:01,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:01,456 INFO L470 AbstractCegarLoop]: Abstraction has 1037 states and 1710 transitions. [2021-12-07 00:35:01,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:01,456 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1710 transitions. [2021-12-07 00:35:01,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-07 00:35:01,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:01,461 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:35:01,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-07 00:35:01,461 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:01,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:01,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1749811701, now seen corresponding path program 1 times [2021-12-07 00:35:01,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:01,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660394833] [2021-12-07 00:35:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:01,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:01,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-07 00:35:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-07 00:35:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:35:01,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-07 00:35:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-07 00:35:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:35:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:35:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-07 00:35:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-07 00:35:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-07 00:35:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-07 00:35:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:01,537 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 00:35:01,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:01,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660394833] [2021-12-07 00:35:01,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660394833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:01,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:01,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:01,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835082261] [2021-12-07 00:35:01,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:01,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:01,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:01,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:01,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:01,539 INFO L87 Difference]: Start difference. First operand 1037 states and 1710 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, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:02,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:02,290 INFO L93 Difference]: Finished difference Result 2567 states and 4291 transitions. [2021-12-07 00:35:02,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:02,291 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, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 151 [2021-12-07 00:35:02,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:02,299 INFO L225 Difference]: With dead ends: 2567 [2021-12-07 00:35:02,299 INFO L226 Difference]: Without dead ends: 1661 [2021-12-07 00:35:02,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:02,302 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 1225 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:02,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1240 Valid, 1354 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:35:02,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2021-12-07 00:35:02,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 1530. [2021-12-07 00:35:02,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1210 states have (on average 1.594214876033058) internal successors, (1929), 1218 states have internal predecessors, (1929), 292 states have call successors, (292), 24 states have call predecessors, (292), 27 states have return successors, (321), 289 states have call predecessors, (321), 289 states have call successors, (321) [2021-12-07 00:35:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2542 transitions. [2021-12-07 00:35:02,385 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2542 transitions. Word has length 151 [2021-12-07 00:35:02,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:02,386 INFO L470 AbstractCegarLoop]: Abstraction has 1530 states and 2542 transitions. [2021-12-07 00:35:02,386 INFO L471 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, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:02,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2542 transitions. [2021-12-07 00:35:02,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-07 00:35:02,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:02,393 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:35:02,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-07 00:35:02,393 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:02,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:02,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1554372947, now seen corresponding path program 1 times [2021-12-07 00:35:02,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:02,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108010777] [2021-12-07 00:35:02,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:02,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:02,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:02,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-07 00:35:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-07 00:35:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-07 00:35:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:35:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:35:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 00:35:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-07 00:35:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-07 00:35:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-07 00:35:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-07 00:35:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-07 00:35:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 00:35:02,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:02,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108010777] [2021-12-07 00:35:02,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108010777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:02,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:02,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:02,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967710996] [2021-12-07 00:35:02,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:02,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:02,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:02,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:02,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:02,482 INFO L87 Difference]: Start difference. First operand 1530 states and 2542 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:03,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:03,322 INFO L93 Difference]: Finished difference Result 3669 states and 6209 transitions. [2021-12-07 00:35:03,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:03,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2021-12-07 00:35:03,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:03,335 INFO L225 Difference]: With dead ends: 3669 [2021-12-07 00:35:03,335 INFO L226 Difference]: Without dead ends: 2405 [2021-12-07 00:35:03,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:03,339 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 1223 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:03,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 1349 Invalid, 1365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:35:03,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2405 states. [2021-12-07 00:35:03,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2405 to 2274. [2021-12-07 00:35:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2274 states, 1831 states have (on average 1.6013107591480065) internal successors, (2932), 1839 states have internal predecessors, (2932), 415 states have call successors, (415), 24 states have call predecessors, (415), 27 states have return successors, (460), 412 states have call predecessors, (460), 412 states have call successors, (460) [2021-12-07 00:35:03,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 3807 transitions. [2021-12-07 00:35:03,470 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 3807 transitions. Word has length 152 [2021-12-07 00:35:03,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:03,471 INFO L470 AbstractCegarLoop]: Abstraction has 2274 states and 3807 transitions. [2021-12-07 00:35:03,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:03,471 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 3807 transitions. [2021-12-07 00:35:03,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-07 00:35:03,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:03,479 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:35:03,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-07 00:35:03,480 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:03,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:03,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1137027892, now seen corresponding path program 1 times [2021-12-07 00:35:03,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:03,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572443876] [2021-12-07 00:35:03,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:03,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:03,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-07 00:35:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-07 00:35:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-07 00:35:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-07 00:35:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 00:35:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-07 00:35:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:35:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:35:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-07 00:35:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-07 00:35:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-07 00:35:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:03,560 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 00:35:03,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:03,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572443876] [2021-12-07 00:35:03,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572443876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:03,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:03,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:03,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33186912] [2021-12-07 00:35:03,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:03,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:03,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:03,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:03,562 INFO L87 Difference]: Start difference. First operand 2274 states and 3807 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:04,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:04,490 INFO L93 Difference]: Finished difference Result 5378 states and 9189 transitions. [2021-12-07 00:35:04,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:04,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 153 [2021-12-07 00:35:04,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:04,508 INFO L225 Difference]: With dead ends: 5378 [2021-12-07 00:35:04,508 INFO L226 Difference]: Without dead ends: 3589 [2021-12-07 00:35:04,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:04,512 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 1221 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 1362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 506 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:04,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1236 Valid, 1343 Invalid, 1362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [506 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:35:04,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3589 states. [2021-12-07 00:35:04,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3589 to 3458. [2021-12-07 00:35:04,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3458 states, 2836 states have (on average 1.6057827926657264) internal successors, (4554), 2844 states have internal predecessors, (4554), 594 states have call successors, (594), 24 states have call predecessors, (594), 27 states have return successors, (665), 591 states have call predecessors, (665), 591 states have call successors, (665) [2021-12-07 00:35:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 5813 transitions. [2021-12-07 00:35:04,741 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 5813 transitions. Word has length 153 [2021-12-07 00:35:04,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:04,741 INFO L470 AbstractCegarLoop]: Abstraction has 3458 states and 5813 transitions. [2021-12-07 00:35:04,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 5813 transitions. [2021-12-07 00:35:04,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-07 00:35:04,752 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:04,752 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:35:04,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-07 00:35:04,753 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:04,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:04,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1907813591, now seen corresponding path program 1 times [2021-12-07 00:35:04,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:04,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553918432] [2021-12-07 00:35:04,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:04,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:04,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:04,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:04,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:04,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-07 00:35:04,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:35:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-07 00:35:04,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-07 00:35:04,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:35:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:35:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-07 00:35:04,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-07 00:35:04,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-07 00:35:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-07 00:35:04,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-07 00:35:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:04,833 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 00:35:04,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:04,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553918432] [2021-12-07 00:35:04,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553918432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:04,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:04,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:04,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355819632] [2021-12-07 00:35:04,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:04,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:04,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:04,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:04,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:04,835 INFO L87 Difference]: Start difference. First operand 3458 states and 5813 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:05,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:05,845 INFO L93 Difference]: Finished difference Result 8451 states and 14505 transitions. [2021-12-07 00:35:05,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:05,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2021-12-07 00:35:05,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:05,873 INFO L225 Difference]: With dead ends: 8451 [2021-12-07 00:35:05,873 INFO L226 Difference]: Without dead ends: 5730 [2021-12-07 00:35:05,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:05,880 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 1219 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:05,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1234 Valid, 1412 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:35:05,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5730 states. [2021-12-07 00:35:06,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5730 to 5599. [2021-12-07 00:35:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5599 states, 4601 states have (on average 1.599652249510976) internal successors, (7360), 4609 states have internal predecessors, (7360), 970 states have call successors, (970), 24 states have call predecessors, (970), 27 states have return successors, (1085), 967 states have call predecessors, (1085), 967 states have call successors, (1085) [2021-12-07 00:35:06,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5599 states to 5599 states and 9415 transitions. [2021-12-07 00:35:06,204 INFO L78 Accepts]: Start accepts. Automaton has 5599 states and 9415 transitions. Word has length 154 [2021-12-07 00:35:06,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:06,204 INFO L470 AbstractCegarLoop]: Abstraction has 5599 states and 9415 transitions. [2021-12-07 00:35:06,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand 5599 states and 9415 transitions. [2021-12-07 00:35:06,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-07 00:35:06,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:06,221 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:35:06,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-07 00:35:06,221 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:06,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:06,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1465087056, now seen corresponding path program 1 times [2021-12-07 00:35:06,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:06,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302664955] [2021-12-07 00:35:06,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:06,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:06,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-07 00:35:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:35:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-07 00:35:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-07 00:35:06,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-07 00:35:06,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-07 00:35:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-07 00:35:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-07 00:35:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-07 00:35:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-07 00:35:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-07 00:35:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 00:35:06,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:06,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302664955] [2021-12-07 00:35:06,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302664955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:06,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:06,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:06,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139814092] [2021-12-07 00:35:06,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:06,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:06,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:06,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:06,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:06,318 INFO L87 Difference]: Start difference. First operand 5599 states and 9415 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:07,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:07,376 INFO L93 Difference]: Finished difference Result 13873 states and 23806 transitions. [2021-12-07 00:35:07,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:07,376 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2021-12-07 00:35:07,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:07,417 INFO L225 Difference]: With dead ends: 13873 [2021-12-07 00:35:07,417 INFO L226 Difference]: Without dead ends: 9413 [2021-12-07 00:35:07,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:07,429 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 1218 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 1378 SdHoareTripleChecker+Invalid, 1369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:07,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1233 Valid, 1378 Invalid, 1369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-07 00:35:07,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9413 states. [2021-12-07 00:35:07,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9413 to 9282. [2021-12-07 00:35:07,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9282 states, 7678 states have (on average 1.5976816879395677) internal successors, (12267), 7686 states have internal predecessors, (12267), 1576 states have call successors, (1576), 24 states have call predecessors, (1576), 27 states have return successors, (1769), 1573 states have call predecessors, (1769), 1573 states have call successors, (1769) [2021-12-07 00:35:07,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9282 states to 9282 states and 15612 transitions. [2021-12-07 00:35:07,919 INFO L78 Accepts]: Start accepts. Automaton has 9282 states and 15612 transitions. Word has length 155 [2021-12-07 00:35:07,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:07,919 INFO L470 AbstractCegarLoop]: Abstraction has 9282 states and 15612 transitions. [2021-12-07 00:35:07,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:07,920 INFO L276 IsEmpty]: Start isEmpty. Operand 9282 states and 15612 transitions. [2021-12-07 00:35:07,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-07 00:35:07,945 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:07,945 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:35:07,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-07 00:35:07,946 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:07,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:07,946 INFO L85 PathProgramCache]: Analyzing trace with hash 626261333, now seen corresponding path program 1 times [2021-12-07 00:35:07,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:07,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206515307] [2021-12-07 00:35:07,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:07,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:07,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:07,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:07,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:07,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:07,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:07,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:07,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-07 00:35:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:08,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 00:35:08,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:08,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-07 00:35:08,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:08,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-07 00:35:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:08,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 00:35:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:08,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-07 00:35:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:08,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-07 00:35:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:08,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:35:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:08,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:35:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:08,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-07 00:35:08,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:08,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-07 00:35:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:08,024 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 00:35:08,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:08,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206515307] [2021-12-07 00:35:08,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206515307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:08,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:08,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:08,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951537293] [2021-12-07 00:35:08,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:08,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:08,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:08,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:08,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:08,026 INFO L87 Difference]: Start difference. First operand 9282 states and 15612 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:09,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:09,496 INFO L93 Difference]: Finished difference Result 24057 states and 41247 transitions. [2021-12-07 00:35:09,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:09,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 156 [2021-12-07 00:35:09,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:09,539 INFO L225 Difference]: With dead ends: 24057 [2021-12-07 00:35:09,539 INFO L226 Difference]: Without dead ends: 16366 [2021-12-07 00:35:09,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:09,558 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 1221 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:09,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1236 Valid, 1385 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:35:09,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16366 states. [2021-12-07 00:35:10,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16366 to 16235. [2021-12-07 00:35:10,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16235 states, 13428 states have (on average 1.5889931486446232) internal successors, (21337), 13436 states have internal predecessors, (21337), 2779 states have call successors, (2779), 24 states have call predecessors, (2779), 27 states have return successors, (3116), 2776 states have call predecessors, (3116), 2776 states have call successors, (3116) [2021-12-07 00:35:10,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16235 states to 16235 states and 27232 transitions. [2021-12-07 00:35:10,437 INFO L78 Accepts]: Start accepts. Automaton has 16235 states and 27232 transitions. Word has length 156 [2021-12-07 00:35:10,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:10,437 INFO L470 AbstractCegarLoop]: Abstraction has 16235 states and 27232 transitions. [2021-12-07 00:35:10,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 16235 states and 27232 transitions. [2021-12-07 00:35:10,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-07 00:35:10,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:10,466 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:35:10,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-07 00:35:10,466 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:10,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:10,467 INFO L85 PathProgramCache]: Analyzing trace with hash -140896945, now seen corresponding path program 1 times [2021-12-07 00:35:10,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:10,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138384335] [2021-12-07 00:35:10,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:10,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-07 00:35:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-07 00:35:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-07 00:35:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-07 00:35:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-07 00:35:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-07 00:35:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-07 00:35:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-07 00:35:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-07 00:35:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-07 00:35:10,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-07 00:35:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 00:35:10,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:10,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138384335] [2021-12-07 00:35:10,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138384335] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:10,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:10,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:10,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581149018] [2021-12-07 00:35:10,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:10,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:10,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:10,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:10,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:10,539 INFO L87 Difference]: Start difference. First operand 16235 states and 27232 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:12,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:12,496 INFO L93 Difference]: Finished difference Result 43023 states and 73644 transitions. [2021-12-07 00:35:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:12,497 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 157 [2021-12-07 00:35:12,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:12,588 INFO L225 Difference]: With dead ends: 43023 [2021-12-07 00:35:12,588 INFO L226 Difference]: Without dead ends: 29021 [2021-12-07 00:35:12,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:12,621 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 1219 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:12,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1234 Valid, 1340 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:35:12,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29021 states. [2021-12-07 00:35:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29021 to 28890. [2021-12-07 00:35:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28890 states, 24044 states have (on average 1.5847612710031609) internal successors, (38104), 24052 states have internal predecessors, (38104), 4818 states have call successors, (4818), 24 states have call predecessors, (4818), 27 states have return successors, (5429), 4815 states have call predecessors, (5429), 4815 states have call successors, (5429) [2021-12-07 00:35:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28890 states to 28890 states and 48351 transitions. [2021-12-07 00:35:14,076 INFO L78 Accepts]: Start accepts. Automaton has 28890 states and 48351 transitions. Word has length 157 [2021-12-07 00:35:14,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:14,076 INFO L470 AbstractCegarLoop]: Abstraction has 28890 states and 48351 transitions. [2021-12-07 00:35:14,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand 28890 states and 48351 transitions. [2021-12-07 00:35:14,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-07 00:35:14,113 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:14,113 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:35:14,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-07 00:35:14,113 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:14,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:14,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1810493811, now seen corresponding path program 1 times [2021-12-07 00:35:14,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:14,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570616298] [2021-12-07 00:35:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:14,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:14,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:14,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:14,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-07 00:35:14,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-07 00:35:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-07 00:35:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-07 00:35:14,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:35:14,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-07 00:35:14,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-07 00:35:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-07 00:35:14,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-07 00:35:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-07 00:35:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-07 00:35:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 00:35:14,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:14,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570616298] [2021-12-07 00:35:14,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570616298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:14,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:14,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:14,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121469601] [2021-12-07 00:35:14,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:14,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:14,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:14,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:14,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:14,190 INFO L87 Difference]: Start difference. First operand 28890 states and 48351 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:17,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:17,240 INFO L93 Difference]: Finished difference Result 78785 states and 134008 transitions. [2021-12-07 00:35:17,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:17,241 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 158 [2021-12-07 00:35:17,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:17,373 INFO L225 Difference]: With dead ends: 78785 [2021-12-07 00:35:17,373 INFO L226 Difference]: Without dead ends: 52900 [2021-12-07 00:35:17,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:17,416 INFO L933 BasicCegarLoop]: 621 mSDtfsCounter, 1211 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 866 mSolverCounterSat, 510 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 1376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 510 IncrementalHoareTripleChecker+Valid, 866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:17,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1226 Valid, 1384 Invalid, 1376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [510 Valid, 866 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:35:17,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52900 states. [2021-12-07 00:35:20,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52900 to 52769. [2021-12-07 00:35:20,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52769 states, 44208 states have (on average 1.579058089033659) internal successors, (69807), 44216 states have internal predecessors, (69807), 8533 states have call successors, (8533), 24 states have call predecessors, (8533), 27 states have return successors, (9676), 8530 states have call predecessors, (9676), 8530 states have call successors, (9676) [2021-12-07 00:35:20,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52769 states to 52769 states and 88016 transitions. [2021-12-07 00:35:20,297 INFO L78 Accepts]: Start accepts. Automaton has 52769 states and 88016 transitions. Word has length 158 [2021-12-07 00:35:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:20,297 INFO L470 AbstractCegarLoop]: Abstraction has 52769 states and 88016 transitions. [2021-12-07 00:35:20,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:20,298 INFO L276 IsEmpty]: Start isEmpty. Operand 52769 states and 88016 transitions. [2021-12-07 00:35:20,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-07 00:35:20,363 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:20,363 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:35:20,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-07 00:35:20,363 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:20,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:20,364 INFO L85 PathProgramCache]: Analyzing trace with hash -383563921, now seen corresponding path program 1 times [2021-12-07 00:35:20,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:20,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569645099] [2021-12-07 00:35:20,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:20,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:20,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-07 00:35:20,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-07 00:35:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-07 00:35:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-07 00:35:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 00:35:20,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-07 00:35:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-07 00:35:20,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-07 00:35:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-07 00:35:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-07 00:35:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-07 00:35:20,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:20,447 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 00:35:20,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:20,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569645099] [2021-12-07 00:35:20,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569645099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:35:20,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:35:20,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 00:35:20,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772746222] [2021-12-07 00:35:20,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:35:20,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:35:20,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:20,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:35:20,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-07 00:35:20,449 INFO L87 Difference]: Start difference. First operand 52769 states and 88016 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:25,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:35:25,034 INFO L93 Difference]: Finished difference Result 98556 states and 167938 transitions. [2021-12-07 00:35:25,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:35:25,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2021-12-07 00:35:25,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:35:25,351 INFO L225 Difference]: With dead ends: 98556 [2021-12-07 00:35:25,351 INFO L226 Difference]: Without dead ends: 98359 [2021-12-07 00:35:25,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:35:25,375 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 1209 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 877 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 1381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:35:25,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1224 Valid, 1354 Invalid, 1381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 877 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:35:25,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98359 states. [2021-12-07 00:35:30,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98359 to 98228. [2021-12-07 00:35:30,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98228 states, 82868 states have (on average 1.5718250711975672) internal successors, (130254), 82876 states have internal predecessors, (130254), 15332 states have call successors, (15332), 24 states have call predecessors, (15332), 27 states have return successors, (17521), 15329 states have call predecessors, (17521), 15329 states have call successors, (17521) [2021-12-07 00:35:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98228 states to 98228 states and 163107 transitions. [2021-12-07 00:35:30,709 INFO L78 Accepts]: Start accepts. Automaton has 98228 states and 163107 transitions. Word has length 159 [2021-12-07 00:35:30,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:35:30,709 INFO L470 AbstractCegarLoop]: Abstraction has 98228 states and 163107 transitions. [2021-12-07 00:35:30,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:35:30,710 INFO L276 IsEmpty]: Start isEmpty. Operand 98228 states and 163107 transitions. [2021-12-07 00:35:30,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-07 00:35:30,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:35:30,780 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:35:30,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-07 00:35:30,780 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:35:30,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:35:30,780 INFO L85 PathProgramCache]: Analyzing trace with hash 2069009492, now seen corresponding path program 1 times [2021-12-07 00:35:30,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:35:30,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336073952] [2021-12-07 00:35:30,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:30,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:35:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:35:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:35:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:35:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:35:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:35:30,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:35:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:35:30,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:35:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:35:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-07 00:35:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-07 00:35:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-07 00:35:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-07 00:35:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-07 00:35:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-07 00:35:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-07 00:35:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-07 00:35:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:30,946 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-07 00:35:30,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:35:30,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336073952] [2021-12-07 00:35:30,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336073952] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:35:30,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26433315] [2021-12-07 00:35:30,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:35:30,947 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:35:30,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:35:30,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:35:30,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-07 00:35:31,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:35:31,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 1295 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-07 00:35:31,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:35:31,289 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-07 00:35:31,289 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:35:31,556 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-07 00:35:31,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26433315] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:35:31,556 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:35:31,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2021-12-07 00:35:31,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568154666] [2021-12-07 00:35:31,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:35:31,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-07 00:35:31,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:35:31,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-07 00:35:31,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2021-12-07 00:35:31,558 INFO L87 Difference]: Start difference. First operand 98228 states and 163107 transitions. Second operand has 32 states, 30 states have (on average 8.333333333333334) internal successors, (250), 24 states have internal predecessors, (250), 9 states have call successors, (51), 12 states have call predecessors, (51), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2021-12-07 00:36:13,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:36:13,538 INFO L93 Difference]: Finished difference Result 588434 states and 1026019 transitions. [2021-12-07 00:36:13,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2021-12-07 00:36:13,539 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 8.333333333333334) internal successors, (250), 24 states have internal predecessors, (250), 9 states have call successors, (51), 12 states have call predecessors, (51), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) Word has length 160 [2021-12-07 00:36:13,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:36:15,936 INFO L225 Difference]: With dead ends: 588434 [2021-12-07 00:36:15,936 INFO L226 Difference]: Without dead ends: 588241 [2021-12-07 00:36:16,132 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 562 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12525 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=4333, Invalid=31199, Unknown=0, NotChecked=0, Total=35532 [2021-12-07 00:36:16,133 INFO L933 BasicCegarLoop]: 1761 mSDtfsCounter, 8159 mSDsluCounter, 14902 mSDsCounter, 0 mSdLazyCounter, 38055 mSolverCounterSat, 7485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8184 SdHoareTripleChecker+Valid, 16663 SdHoareTripleChecker+Invalid, 45540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7485 IncrementalHoareTripleChecker+Valid, 38055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2021-12-07 00:36:16,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8184 Valid, 16663 Invalid, 45540 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7485 Valid, 38055 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2021-12-07 00:36:16,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588241 states. [2021-12-07 00:36:43,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588241 to 391515. [2021-12-07 00:36:43,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391515 states, 330396 states have (on average 1.5725432511289483) internal successors, (519562), 330211 states have internal predecessors, (519562), 60966 states have call successors, (60966), 127 states have call predecessors, (60966), 152 states have return successors, (84942), 61192 states have call predecessors, (84942), 60958 states have call successors, (84942) [2021-12-07 00:36:45,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391515 states to 391515 states and 665470 transitions. [2021-12-07 00:36:45,379 INFO L78 Accepts]: Start accepts. Automaton has 391515 states and 665470 transitions. Word has length 160 [2021-12-07 00:36:45,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:36:45,379 INFO L470 AbstractCegarLoop]: Abstraction has 391515 states and 665470 transitions. [2021-12-07 00:36:45,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 8.333333333333334) internal successors, (250), 24 states have internal predecessors, (250), 9 states have call successors, (51), 12 states have call predecessors, (51), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2021-12-07 00:36:45,379 INFO L276 IsEmpty]: Start isEmpty. Operand 391515 states and 665470 transitions. [2021-12-07 00:36:45,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-07 00:36:45,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:36:45,948 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:36:45,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-07 00:36:46,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:36:46,149 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:36:46,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:36:46,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1529626400, now seen corresponding path program 1 times [2021-12-07 00:36:46,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:36:46,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877359800] [2021-12-07 00:36:46,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:46,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:36:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:36:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:36:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:36:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:36:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:36:46,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:36:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:36:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:36:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:36:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-07 00:36:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:36:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-07 00:36:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-07 00:36:46,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:36:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-07 00:36:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-07 00:36:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-07 00:36:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,275 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-07 00:36:46,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:36:46,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877359800] [2021-12-07 00:36:46,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877359800] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:36:46,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570080970] [2021-12-07 00:36:46,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:36:46,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:36:46,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:36:46,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:36:46,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-07 00:36:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:36:46,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 00:36:46,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:36:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-07 00:36:46,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:36:46,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570080970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:36:46,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:36:46,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2021-12-07 00:36:46,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862426928] [2021-12-07 00:36:46,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:36:46,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:36:46,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:36:46,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:36:46,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-12-07 00:36:46,623 INFO L87 Difference]: Start difference. First operand 391515 states and 665470 transitions. Second operand has 9 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-07 00:37:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:37:06,091 INFO L93 Difference]: Finished difference Result 393643 states and 668582 transitions. [2021-12-07 00:37:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-07 00:37:06,092 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 162 [2021-12-07 00:37:06,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:37:07,526 INFO L225 Difference]: With dead ends: 393643 [2021-12-07 00:37:07,526 INFO L226 Difference]: Without dead ends: 391951 [2021-12-07 00:37:07,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2021-12-07 00:37:07,644 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 766 mSDsluCounter, 2982 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 3482 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:37:07,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 3482 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:37:07,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391951 states. [2021-12-07 00:37:31,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391951 to 391857. [2021-12-07 00:37:31,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391857 states, 330622 states have (on average 1.5723878023845963) internal successors, (519866), 330451 states have internal predecessors, (519866), 61076 states have call successors, (61076), 133 states have call predecessors, (61076), 158 states have return successors, (85086), 61300 states have call predecessors, (85086), 61068 states have call successors, (85086) [2021-12-07 00:37:33,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391857 states to 391857 states and 666028 transitions. [2021-12-07 00:37:33,377 INFO L78 Accepts]: Start accepts. Automaton has 391857 states and 666028 transitions. Word has length 162 [2021-12-07 00:37:33,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:37:33,378 INFO L470 AbstractCegarLoop]: Abstraction has 391857 states and 666028 transitions. [2021-12-07 00:37:33,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.625) internal successors, (109), 7 states have internal predecessors, (109), 4 states have call successors, (20), 5 states have call predecessors, (20), 4 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-07 00:37:33,378 INFO L276 IsEmpty]: Start isEmpty. Operand 391857 states and 666028 transitions. [2021-12-07 00:37:33,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-07 00:37:33,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:37:33,842 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2021-12-07 00:37:33,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-07 00:37:34,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:34,044 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:37:34,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:37:34,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2052891672, now seen corresponding path program 1 times [2021-12-07 00:37:34,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:37:34,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495980501] [2021-12-07 00:37:34,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:34,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:37:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:37:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:37:34,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-07 00:37:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-07 00:37:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-07 00:37:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-07 00:37:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-07 00:37:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-07 00:37:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-07 00:37:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-07 00:37:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-07 00:37:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-07 00:37:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-07 00:37:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-07 00:37:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-07 00:37:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-07 00:37:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-07 00:37:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-07 00:37:34,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:37:34,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495980501] [2021-12-07 00:37:34,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495980501] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:37:34,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [208858727] [2021-12-07 00:37:34,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:37:34,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:37:34,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:37:34,163 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:37:34,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-07 00:37:34,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:37:34,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-07 00:37:34,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:37:34,427 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-07 00:37:34,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:37:34,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [208858727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:37:34,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:37:34,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-07 00:37:34,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661011063] [2021-12-07 00:37:34,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:37:34,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 00:37:34,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:37:34,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 00:37:34,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-07 00:37:34,429 INFO L87 Difference]: Start difference. First operand 391857 states and 666028 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:37:55,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:37:55,644 INFO L93 Difference]: Finished difference Result 587790 states and 1003372 transitions. [2021-12-07 00:37:55,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 00:37:55,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 162 [2021-12-07 00:37:55,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:37:57,136 INFO L225 Difference]: With dead ends: 587790 [2021-12-07 00:37:57,136 INFO L226 Difference]: Without dead ends: 391873 [2021-12-07 00:37:57,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-07 00:37:57,496 INFO L933 BasicCegarLoop]: 505 mSDtfsCounter, 123 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 1869 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:37:57,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 1869 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:37:57,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391873 states. [2021-12-07 00:38:21,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391873 to 391857. [2021-12-07 00:38:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391857 states, 330622 states have (on average 1.5723817531803692) internal successors, (519864), 330451 states have internal predecessors, (519864), 61076 states have call successors, (61076), 133 states have call predecessors, (61076), 158 states have return successors, (85086), 61300 states have call predecessors, (85086), 61068 states have call successors, (85086) [2021-12-07 00:38:23,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391857 states to 391857 states and 666026 transitions. [2021-12-07 00:38:23,845 INFO L78 Accepts]: Start accepts. Automaton has 391857 states and 666026 transitions. Word has length 162 [2021-12-07 00:38:23,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:38:23,845 INFO L470 AbstractCegarLoop]: Abstraction has 391857 states and 666026 transitions. [2021-12-07 00:38:23,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-07 00:38:23,846 INFO L276 IsEmpty]: Start isEmpty. Operand 391857 states and 666026 transitions. [2021-12-07 00:38:24,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-07 00:38:24,226 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:38:24,227 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:38:24,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-07 00:38:24,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:24,428 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:38:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:38:24,429 INFO L85 PathProgramCache]: Analyzing trace with hash -268046121, now seen corresponding path program 1 times [2021-12-07 00:38:24,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:38:24,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772396885] [2021-12-07 00:38:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:24,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:38:24,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:38:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:38:24,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:38:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:38:24,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:38:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:38:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:38:24,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:38:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:38:24,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 00:38:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 00:38:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-07 00:38:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:38:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-07 00:38:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-07 00:38:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-07 00:38:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-07 00:38:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-07 00:38:24,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:38:24,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772396885] [2021-12-07 00:38:24,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772396885] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:38:24,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850404251] [2021-12-07 00:38:24,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:38:24,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:38:24,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:38:24,547 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:38:24,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-07 00:38:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:38:24,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 00:38:24,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:38:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-07 00:38:25,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:38:25,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850404251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:38:25,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:38:25,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2021-12-07 00:38:25,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992071933] [2021-12-07 00:38:25,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:38:25,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-07 00:38:25,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:38:25,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-07 00:38:25,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2021-12-07 00:38:25,006 INFO L87 Difference]: Start difference. First operand 391857 states and 666026 transitions. Second operand has 10 states, 8 states have (on average 14.0) internal successors, (112), 9 states have internal predecessors, (112), 6 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2021-12-07 00:38:44,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:38:44,878 INFO L93 Difference]: Finished difference Result 393299 states and 668105 transitions. [2021-12-07 00:38:44,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-07 00:38:44,879 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 14.0) internal successors, (112), 9 states have internal predecessors, (112), 6 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) Word has length 163 [2021-12-07 00:38:44,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:38:46,261 INFO L225 Difference]: With dead ends: 393299 [2021-12-07 00:38:46,261 INFO L226 Difference]: Without dead ends: 391871 [2021-12-07 00:38:46,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2021-12-07 00:38:46,378 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 277 mSDsluCounter, 3938 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 4458 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:38:46,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 4458 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:38:46,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391871 states. [2021-12-07 00:39:10,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391871 to 391869. [2021-12-07 00:39:10,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391869 states, 330628 states have (on average 1.5723713660065088) internal successors, (519870), 330463 states have internal predecessors, (519870), 61076 states have call successors, (61076), 133 states have call predecessors, (61076), 164 states have return successors, (85106), 61300 states have call predecessors, (85106), 61068 states have call successors, (85106) [2021-12-07 00:39:12,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391869 states to 391869 states and 666052 transitions. [2021-12-07 00:39:12,467 INFO L78 Accepts]: Start accepts. Automaton has 391869 states and 666052 transitions. Word has length 163 [2021-12-07 00:39:12,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:39:12,467 INFO L470 AbstractCegarLoop]: Abstraction has 391869 states and 666052 transitions. [2021-12-07 00:39:12,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 14.0) internal successors, (112), 9 states have internal predecessors, (112), 6 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 4 states have call predecessors, (17), 5 states have call successors, (17) [2021-12-07 00:39:12,467 INFO L276 IsEmpty]: Start isEmpty. Operand 391869 states and 666052 transitions. [2021-12-07 00:39:12,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-07 00:39:12,859 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:39:12,860 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:39:12,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-07 00:39:13,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:39:13,061 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:39:13,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:39:13,062 INFO L85 PathProgramCache]: Analyzing trace with hash 12303768, now seen corresponding path program 1 times [2021-12-07 00:39:13,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:39:13,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4871315] [2021-12-07 00:39:13,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:13,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:39:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:39:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:39:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:39:13,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:39:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:39:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:39:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:39:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:39:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:39:13,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 00:39:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 00:39:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-07 00:39:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:39:13,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-07 00:39:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-07 00:39:13,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-07 00:39:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-07 00:39:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,181 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-07 00:39:13,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:39:13,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4871315] [2021-12-07 00:39:13,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4871315] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:39:13,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287282658] [2021-12-07 00:39:13,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:39:13,181 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:39:13,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:39:13,182 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:39:13,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-07 00:39:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:39:13,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 1296 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-07 00:39:13,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:39:13,505 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:39:13,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:39:13,646 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 00:39:13,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287282658] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-07 00:39:13,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:39:13,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13, 5] total 18 [2021-12-07 00:39:13,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987282239] [2021-12-07 00:39:13,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:39:13,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-07 00:39:13,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:39:13,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-07 00:39:13,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-12-07 00:39:13,647 INFO L87 Difference]: Start difference. First operand 391869 states and 666052 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-07 00:39:35,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:39:35,938 INFO L93 Difference]: Finished difference Result 396657 states and 672899 transitions. [2021-12-07 00:39:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-07 00:39:35,939 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 163 [2021-12-07 00:39:35,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:39:37,491 INFO L225 Difference]: With dead ends: 396657 [2021-12-07 00:39:37,491 INFO L226 Difference]: Without dead ends: 395191 [2021-12-07 00:39:37,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 350 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=485, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:39:37,627 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 950 mSDsluCounter, 1795 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-07 00:39:37,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 2485 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-07 00:39:37,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395191 states. [2021-12-07 00:40:04,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395191 to 395101. [2021-12-07 00:40:05,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395101 states, 333046 states have (on average 1.5711523333113144) internal successors, (523266), 332979 states have internal predecessors, (523266), 61610 states have call successors, (61610), 349 states have call predecessors, (61610), 444 states have return successors, (85755), 61848 states have call predecessors, (85755), 61590 states have call successors, (85755) [2021-12-07 00:40:06,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395101 states to 395101 states and 670631 transitions. [2021-12-07 00:40:06,550 INFO L78 Accepts]: Start accepts. Automaton has 395101 states and 670631 transitions. Word has length 163 [2021-12-07 00:40:06,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:40:06,550 INFO L470 AbstractCegarLoop]: Abstraction has 395101 states and 670631 transitions. [2021-12-07 00:40:06,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-07 00:40:06,551 INFO L276 IsEmpty]: Start isEmpty. Operand 395101 states and 670631 transitions. [2021-12-07 00:40:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-07 00:40:07,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:40:07,090 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:40:07,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-07 00:40:07,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-07 00:40:07,292 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:40:07,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:40:07,293 INFO L85 PathProgramCache]: Analyzing trace with hash 1954309191, now seen corresponding path program 1 times [2021-12-07 00:40:07,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:40:07,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524339446] [2021-12-07 00:40:07,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:40:07,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:40:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:40:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:40:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:40:07,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:40:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:40:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:40:07,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:40:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:40:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-07 00:40:07,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-07 00:40:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-07 00:40:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-07 00:40:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-07 00:40:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-07 00:40:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-07 00:40:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-07 00:40:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,445 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-07 00:40:07,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:40:07,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524339446] [2021-12-07 00:40:07,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524339446] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:40:07,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138665716] [2021-12-07 00:40:07,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:40:07,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:40:07,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:40:07,446 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:40:07,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-07 00:40:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:07,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 1297 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-07 00:40:07,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:40:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-07 00:40:07,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:40:07,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138665716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:40:07,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:40:07,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [13] total 23 [2021-12-07 00:40:07,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114262338] [2021-12-07 00:40:07,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:40:07,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:40:07,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:40:07,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:40:07,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2021-12-07 00:40:07,800 INFO L87 Difference]: Start difference. First operand 395101 states and 670631 transitions. Second operand has 12 states, 10 states have (on average 11.4) internal successors, (114), 11 states have internal predecessors, (114), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2021-12-07 00:40:29,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:40:29,210 INFO L93 Difference]: Finished difference Result 397125 states and 673497 transitions. [2021-12-07 00:40:29,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:40:29,211 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 11.4) internal successors, (114), 11 states have internal predecessors, (114), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) Word has length 164 [2021-12-07 00:40:29,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:40:30,659 INFO L225 Difference]: With dead ends: 397125 [2021-12-07 00:40:30,659 INFO L226 Difference]: Without dead ends: 394171 [2021-12-07 00:40:30,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=785, Unknown=0, NotChecked=0, Total=870 [2021-12-07 00:40:30,780 INFO L933 BasicCegarLoop]: 520 mSDtfsCounter, 414 mSDsluCounter, 4854 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 414 SdHoareTripleChecker+Valid, 5374 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:40:30,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [414 Valid, 5374 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:40:31,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394171 states. [2021-12-07 00:40:57,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394171 to 393718. [2021-12-07 00:40:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393718 states, 332027 states have (on average 1.571748683089026) internal successors, (521863), 331933 states have internal predecessors, (521863), 61347 states have call successors, (61347), 269 states have call predecessors, (61347), 343 states have return successors, (85432), 61572 states have call predecessors, (85432), 61333 states have call successors, (85432) [2021-12-07 00:40:59,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393718 states to 393718 states and 668642 transitions. [2021-12-07 00:40:59,049 INFO L78 Accepts]: Start accepts. Automaton has 393718 states and 668642 transitions. Word has length 164 [2021-12-07 00:40:59,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:40:59,049 INFO L470 AbstractCegarLoop]: Abstraction has 393718 states and 668642 transitions. [2021-12-07 00:40:59,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 11.4) internal successors, (114), 11 states have internal predecessors, (114), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 6 states have call predecessors, (17), 7 states have call successors, (17) [2021-12-07 00:40:59,050 INFO L276 IsEmpty]: Start isEmpty. Operand 393718 states and 668642 transitions. [2021-12-07 00:40:59,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-07 00:40:59,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:40:59,616 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:40:59,639 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-07 00:40:59,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-07 00:40:59,818 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:40:59,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:40:59,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1817074617, now seen corresponding path program 1 times [2021-12-07 00:40:59,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:40:59,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643886065] [2021-12-07 00:40:59,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:40:59,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:40:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:40:59,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:40:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:40:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:40:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:40:59,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:40:59,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:40:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:40:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:40:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:40:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:40:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-07 00:40:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-07 00:40:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-07 00:40:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-07 00:40:59,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-07 00:40:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-07 00:40:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:40:59,941 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-07 00:40:59,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:40:59,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643886065] [2021-12-07 00:40:59,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643886065] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:40:59,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562283570] [2021-12-07 00:40:59,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:40:59,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:40:59,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:40:59,942 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:40:59,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-07 00:41:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:00,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-07 00:41:00,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:41:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 00:41:00,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:41:00,539 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-07 00:41:00,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562283570] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-07 00:41:00,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-07 00:41:00,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 29 [2021-12-07 00:41:00,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4482058] [2021-12-07 00:41:00,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:00,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-07 00:41:00,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:00,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-07 00:41:00,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=749, Unknown=0, NotChecked=0, Total=812 [2021-12-07 00:41:00,541 INFO L87 Difference]: Start difference. First operand 393718 states and 668642 transitions. Second operand has 13 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2021-12-07 00:41:25,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:41:25,152 INFO L93 Difference]: Finished difference Result 398630 states and 675650 transitions. [2021-12-07 00:41:25,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-07 00:41:25,153 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) Word has length 165 [2021-12-07 00:41:25,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:41:26,662 INFO L225 Difference]: With dead ends: 398630 [2021-12-07 00:41:26,662 INFO L226 Difference]: Without dead ends: 395861 [2021-12-07 00:41:26,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 347 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=167, Invalid=1813, Unknown=0, NotChecked=0, Total=1980 [2021-12-07 00:41:26,781 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 1084 mSDsluCounter, 4854 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 5451 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-07 00:41:26,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1093 Valid, 5451 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-07 00:41:27,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395861 states. [2021-12-07 00:41:56,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395861 to 395048. [2021-12-07 00:41:56,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395048 states, 333008 states have (on average 1.5712205112189497) internal successors, (523229), 332961 states have internal predecessors, (523229), 61588 states have call successors, (61588), 345 states have call predecessors, (61588), 451 states have return successors, (85751), 61818 states have call predecessors, (85751), 61570 states have call successors, (85751) [2021-12-07 00:41:57,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395048 states to 395048 states and 670568 transitions. [2021-12-07 00:41:57,857 INFO L78 Accepts]: Start accepts. Automaton has 395048 states and 670568 transitions. Word has length 165 [2021-12-07 00:41:57,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:41:57,858 INFO L470 AbstractCegarLoop]: Abstraction has 395048 states and 670568 transitions. [2021-12-07 00:41:57,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.0) internal successors, (110), 11 states have internal predecessors, (110), 6 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (17), 6 states have call predecessors, (17), 6 states have call successors, (17) [2021-12-07 00:41:57,858 INFO L276 IsEmpty]: Start isEmpty. Operand 395048 states and 670568 transitions. [2021-12-07 00:41:58,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-07 00:41:58,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:41:58,425 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:41:58,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-07 00:41:58,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-07 00:41:58,627 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:41:58,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:41:58,628 INFO L85 PathProgramCache]: Analyzing trace with hash 699546319, now seen corresponding path program 1 times [2021-12-07 00:41:58,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:41:58,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723774138] [2021-12-07 00:41:58,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:41:58,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:41:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:41:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:41:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:41:58,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:41:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:41:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:41:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:41:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:41:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-07 00:41:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-07 00:41:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:41:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-07 00:41:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-07 00:41:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-07 00:41:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-07 00:41:58,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-07 00:41:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-07 00:41:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:41:58,739 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-07 00:41:58,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:41:58,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723774138] [2021-12-07 00:41:58,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723774138] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:41:58,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 00:41:58,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-07 00:41:58,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735795864] [2021-12-07 00:41:58,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:41:58,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-07 00:41:58,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:41:58,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-07 00:41:58,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-07 00:41:58,740 INFO L87 Difference]: Start difference. First operand 395048 states and 670568 transitions. Second operand has 9 states, 8 states have (on average 13.125) internal successors, (105), 5 states have internal predecessors, (105), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-07 00:42:24,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:42:24,489 INFO L93 Difference]: Finished difference Result 398171 states and 688037 transitions. [2021-12-07 00:42:24,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-07 00:42:24,489 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.125) internal successors, (105), 5 states have internal predecessors, (105), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 165 [2021-12-07 00:42:24,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:42:26,101 INFO L225 Difference]: With dead ends: 398171 [2021-12-07 00:42:26,101 INFO L226 Difference]: Without dead ends: 395952 [2021-12-07 00:42:26,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2021-12-07 00:42:26,268 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 1274 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 503 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1274 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 1948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 503 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-07 00:42:26,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1274 Valid, 1685 Invalid, 1948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [503 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-07 00:42:26,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395952 states. [2021-12-07 00:42:55,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395952 to 393143. [2021-12-07 00:42:55,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393143 states, 331620 states have (on average 1.5720010855798805) internal successors, (521307), 331505 states have internal predecessors, (521307), 61187 states have call successors, (61187), 264 states have call predecessors, (61187), 335 states have return successors, (85252), 61414 states have call predecessors, (85252), 61171 states have call successors, (85252) [2021-12-07 00:42:57,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393143 states to 393143 states and 667746 transitions. [2021-12-07 00:42:57,495 INFO L78 Accepts]: Start accepts. Automaton has 393143 states and 667746 transitions. Word has length 165 [2021-12-07 00:42:57,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:42:57,495 INFO L470 AbstractCegarLoop]: Abstraction has 393143 states and 667746 transitions. [2021-12-07 00:42:57,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.125) internal successors, (105), 5 states have internal predecessors, (105), 3 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-07 00:42:57,495 INFO L276 IsEmpty]: Start isEmpty. Operand 393143 states and 667746 transitions. [2021-12-07 00:42:57,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-07 00:42:57,926 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:42:57,926 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:42:57,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-07 00:42:57,927 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:42:57,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:42:57,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1787601693, now seen corresponding path program 1 times [2021-12-07 00:42:57,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:42:57,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14363023] [2021-12-07 00:42:57,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:42:57,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:42:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:57,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:42:57,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:57,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:42:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:57,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:42:57,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:57,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:42:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:42:58,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:42:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:58,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:42:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:58,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:42:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:42:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:58,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:42:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:58,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:42:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:58,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-07 00:42:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:58,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-07 00:42:58,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:58,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-07 00:42:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:58,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-07 00:42:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:58,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-07 00:42:58,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:58,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-07 00:42:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-07 00:42:58,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:42:58,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14363023] [2021-12-07 00:42:58,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14363023] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:42:58,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524345619] [2021-12-07 00:42:58,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:42:58,040 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:42:58,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:42:58,040 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:42:58,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-07 00:42:58,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:42:58,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-07 00:42:58,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:42:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-07 00:42:58,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:42:58,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524345619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:42:58,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:42:58,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 24 [2021-12-07 00:42:58,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060754982] [2021-12-07 00:42:58,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:42:58,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-07 00:42:58,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:42:58,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-07 00:42:58,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2021-12-07 00:42:58,484 INFO L87 Difference]: Start difference. First operand 393143 states and 667746 transitions. Second operand has 12 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2021-12-07 00:43:22,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:43:22,095 INFO L93 Difference]: Finished difference Result 395897 states and 671549 transitions. [2021-12-07 00:43:22,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-07 00:43:22,096 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) Word has length 166 [2021-12-07 00:43:22,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:43:23,486 INFO L225 Difference]: With dead ends: 395897 [2021-12-07 00:43:23,486 INFO L226 Difference]: Without dead ends: 393173 [2021-12-07 00:43:23,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=834, Unknown=0, NotChecked=0, Total=930 [2021-12-07 00:43:23,606 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 408 mSDsluCounter, 4836 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 5354 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 00:43:23,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 5354 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 00:43:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393173 states. [2021-12-07 00:43:52,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393173 to 393151. [2021-12-07 00:43:52,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393151 states, 331624 states have (on average 1.5719941861867657) internal successors, (521311), 331513 states have internal predecessors, (521311), 61187 states have call successors, (61187), 264 states have call predecessors, (61187), 339 states have return successors, (85256), 61414 states have call predecessors, (85256), 61171 states have call successors, (85256) [2021-12-07 00:43:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393151 states to 393151 states and 667754 transitions. [2021-12-07 00:43:54,195 INFO L78 Accepts]: Start accepts. Automaton has 393151 states and 667754 transitions. Word has length 166 [2021-12-07 00:43:54,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:43:54,195 INFO L470 AbstractCegarLoop]: Abstraction has 393151 states and 667754 transitions. [2021-12-07 00:43:54,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 10.545454545454545) internal successors, (116), 11 states have internal predecessors, (116), 8 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (17), 7 states have call predecessors, (17), 7 states have call successors, (17) [2021-12-07 00:43:54,195 INFO L276 IsEmpty]: Start isEmpty. Operand 393151 states and 667754 transitions. [2021-12-07 00:43:54,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-07 00:43:54,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:43:54,621 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:43:54,652 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-07 00:43:54,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-07 00:43:54,823 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:43:54,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:43:54,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1094499996, now seen corresponding path program 1 times [2021-12-07 00:43:54,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:43:54,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143692430] [2021-12-07 00:43:54,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:43:54,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:43:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:43:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:43:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:43:54,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:43:54,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:43:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:43:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:43:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:43:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:43:54,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:43:54,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:43:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-07 00:43:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-07 00:43:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-07 00:43:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-07 00:43:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-07 00:43:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-07 00:43:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-07 00:43:54,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:43:54,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143692430] [2021-12-07 00:43:54,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143692430] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:43:54,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508229630] [2021-12-07 00:43:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:43:54,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:43:54,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:43:54,955 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:43:54,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-07 00:43:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:43:55,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 1319 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-07 00:43:55,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:43:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-07 00:43:55,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 00:43:55,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508229630] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 00:43:55,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-07 00:43:55,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2021-12-07 00:43:55,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057837735] [2021-12-07 00:43:55,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 00:43:55,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 00:43:55,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:43:55,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 00:43:55,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2021-12-07 00:43:55,357 INFO L87 Difference]: Start difference. First operand 393151 states and 667754 transitions. Second operand has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-07 00:44:18,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 00:44:18,947 INFO L93 Difference]: Finished difference Result 396665 states and 672683 transitions. [2021-12-07 00:44:18,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 00:44:18,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 166 [2021-12-07 00:44:18,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 00:44:20,387 INFO L225 Difference]: With dead ends: 396665 [2021-12-07 00:44:20,387 INFO L226 Difference]: Without dead ends: 393949 [2021-12-07 00:44:20,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2021-12-07 00:44:20,510 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 72 mSDsluCounter, 2907 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 3506 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 00:44:20,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 3506 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 00:44:20,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393949 states. [2021-12-07 00:44:49,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393949 to 393191. [2021-12-07 00:44:49,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393191 states, 331644 states have (on average 1.5719596917176248) internal successors, (521331), 331545 states have internal predecessors, (521331), 61195 states have call successors, (61195), 264 states have call predecessors, (61195), 351 states have return successors, (85281), 61422 states have call predecessors, (85281), 61179 states have call successors, (85281) [2021-12-07 00:44:51,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393191 states to 393191 states and 667807 transitions. [2021-12-07 00:44:51,117 INFO L78 Accepts]: Start accepts. Automaton has 393191 states and 667807 transitions. Word has length 166 [2021-12-07 00:44:51,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 00:44:51,117 INFO L470 AbstractCegarLoop]: Abstraction has 393191 states and 667807 transitions. [2021-12-07 00:44:51,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 3 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-07 00:44:51,117 INFO L276 IsEmpty]: Start isEmpty. Operand 393191 states and 667807 transitions. [2021-12-07 00:44:51,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-07 00:44:51,682 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 00:44:51,682 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2021-12-07 00:44:51,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-07 00:44:51,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:44:51,884 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 00:44:51,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 00:44:51,885 INFO L85 PathProgramCache]: Analyzing trace with hash 504814497, now seen corresponding path program 1 times [2021-12-07 00:44:51,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 00:44:51,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104044096] [2021-12-07 00:44:51,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:44:51,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 00:44:51,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:51,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 00:44:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:51,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-07 00:44:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:51,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-07 00:44:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:51,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-07 00:44:51,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:51,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-07 00:44:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:51,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-07 00:44:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:51,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-07 00:44:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:51,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-07 00:44:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:52,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-07 00:44:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:52,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-07 00:44:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:52,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-07 00:44:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:52,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-07 00:44:52,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:52,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-07 00:44:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:52,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-07 00:44:52,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:52,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-07 00:44:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-07 00:44:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:52,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-07 00:44:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:52,026 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-07 00:44:52,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 00:44:52,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104044096] [2021-12-07 00:44:52,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104044096] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-07 00:44:52,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727976248] [2021-12-07 00:44:52,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 00:44:52,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 00:44:52,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 00:44:52,027 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 00:44:52,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4e045348-f406-4001-bb0f-0b98f1030415/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-07 00:44:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 00:44:52,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 1320 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-07 00:44:52,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 00:44:52,361 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-07 00:44:52,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-07 00:44:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-07 00:44:52,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727976248] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-07 00:44:52,613 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-07 00:44:52,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 28 [2021-12-07 00:44:52,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958022322] [2021-12-07 00:44:52,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-07 00:44:52,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-07 00:44:52,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 00:44:52,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-07 00:44:52,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2021-12-07 00:44:52,615 INFO L87 Difference]: Start difference. First operand 393191 states and 667807 transitions. Second operand has 28 states, 26 states have (on average 10.692307692307692) internal successors, (278), 21 states have internal predecessors, (278), 8 states have call successors, (52), 11 states have call predecessors, (52), 10 states have return successors, (43), 8 states have call predecessors, (43), 7 states have call successors, (43)