./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec3_product13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec3_product13.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 c1a514ed3c88dbb6b86d895b5ccbc4ee84ef064cf150167d71ca780388d60956 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 17:25:35,920 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 17:25:35,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 17:25:35,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 17:25:35,952 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 17:25:35,953 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 17:25:35,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 17:25:35,959 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 17:25:35,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 17:25:35,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 17:25:35,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 17:25:35,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 17:25:35,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 17:25:35,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 17:25:35,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 17:25:35,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 17:25:35,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 17:25:35,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 17:25:35,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 17:25:35,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 17:25:35,987 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 17:25:35,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 17:25:35,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 17:25:35,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 17:25:35,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 17:25:35,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 17:25:35,998 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 17:25:36,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 17:25:36,001 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 17:25:36,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 17:25:36,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 17:25:36,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 17:25:36,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 17:25:36,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 17:25:36,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 17:25:36,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 17:25:36,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 17:25:36,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 17:25:36,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 17:25:36,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 17:25:36,008 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 17:25:36,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 17:25:36,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 17:25:36,059 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 17:25:36,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 17:25:36,064 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 17:25:36,064 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 17:25:36,065 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 17:25:36,065 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 17:25:36,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 17:25:36,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 17:25:36,066 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 17:25:36,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 17:25:36,067 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 17:25:36,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 17:25:36,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 17:25:36,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 17:25:36,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 17:25:36,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 17:25:36,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 17:25:36,068 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 17:25:36,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 17:25:36,070 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 17:25:36,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 17:25:36,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 17:25:36,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 17:25:36,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 17:25:36,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:25:36,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 17:25:36,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 17:25:36,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 17:25:36,079 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 17:25:36,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 17:25:36,079 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 17:25:36,080 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 17:25:36,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 17:25:36,080 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1a514ed3c88dbb6b86d895b5ccbc4ee84ef064cf150167d71ca780388d60956 [2022-07-22 17:25:36,311 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 17:25:36,328 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 17:25:36,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 17:25:36,330 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 17:25:36,330 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 17:25:36,331 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec3_product13.cil.c [2022-07-22 17:25:36,382 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5ef72bd6/f4cbbcd95f4644b58041461302106e5e/FLAG7f982637c [2022-07-22 17:25:36,913 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 17:25:36,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product13.cil.c [2022-07-22 17:25:36,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5ef72bd6/f4cbbcd95f4644b58041461302106e5e/FLAG7f982637c [2022-07-22 17:25:37,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5ef72bd6/f4cbbcd95f4644b58041461302106e5e [2022-07-22 17:25:37,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 17:25:37,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 17:25:37,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 17:25:37,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 17:25:37,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 17:25:37,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:25:37" (1/1) ... [2022-07-22 17:25:37,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@523abb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:25:37, skipping insertion in model container [2022-07-22 17:25:37,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 05:25:37" (1/1) ... [2022-07-22 17:25:37,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 17:25:37,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 17:25:37,721 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product13.cil.c[62004,62017] [2022-07-22 17:25:37,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:25:37,744 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 17:25:37,827 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec3_product13.cil.c[62004,62017] [2022-07-22 17:25:37,829 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 17:25:37,850 INFO L208 MainTranslator]: Completed translation [2022-07-22 17:25:37,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:25:37 WrapperNode [2022-07-22 17:25:37,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 17:25:37,851 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 17:25:37,851 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 17:25:37,852 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 17:25:37,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:25:37" (1/1) ... [2022-07-22 17:25:37,885 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:25:37" (1/1) ... [2022-07-22 17:25:37,941 INFO L137 Inliner]: procedures = 125, calls = 198, calls flagged for inlining = 52, calls inlined = 43, statements flattened = 823 [2022-07-22 17:25:37,941 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 17:25:37,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 17:25:37,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 17:25:37,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 17:25:37,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:25:37" (1/1) ... [2022-07-22 17:25:37,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:25:37" (1/1) ... [2022-07-22 17:25:37,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:25:37" (1/1) ... [2022-07-22 17:25:37,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:25:37" (1/1) ... [2022-07-22 17:25:37,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:25:37" (1/1) ... [2022-07-22 17:25:37,991 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:25:37" (1/1) ... [2022-07-22 17:25:37,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:25:37" (1/1) ... [2022-07-22 17:25:38,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 17:25:38,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 17:25:38,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 17:25:38,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 17:25:38,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:25:37" (1/1) ... [2022-07-22 17:25:38,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 17:25:38,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:25:38,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 17:25:38,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 17:25:38,075 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-22 17:25:38,075 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-22 17:25:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-22 17:25:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-22 17:25:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-07-22 17:25:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-07-22 17:25:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-22 17:25:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-22 17:25:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-07-22 17:25:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-07-22 17:25:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-22 17:25:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-22 17:25:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-22 17:25:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-22 17:25:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-22 17:25:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-22 17:25:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-22 17:25:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 17:25:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-07-22 17:25:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-07-22 17:25:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-07-22 17:25:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-07-22 17:25:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-22 17:25:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-22 17:25:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-22 17:25:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-22 17:25:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-22 17:25:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-22 17:25:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-22 17:25:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-22 17:25:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-07-22 17:25:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-07-22 17:25:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-22 17:25:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-22 17:25:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-22 17:25:38,078 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-22 17:25:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 17:25:38,078 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-22 17:25:38,079 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-22 17:25:38,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 17:25:38,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 17:25:38,287 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 17:25:38,288 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 17:25:38,874 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 17:25:38,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 17:25:38,895 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 17:25:38,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:25:38 BoogieIcfgContainer [2022-07-22 17:25:38,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 17:25:38,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 17:25:38,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 17:25:38,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 17:25:38,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 05:25:37" (1/3) ... [2022-07-22 17:25:38,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742270bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:25:38, skipping insertion in model container [2022-07-22 17:25:38,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 05:25:37" (2/3) ... [2022-07-22 17:25:38,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@742270bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 05:25:38, skipping insertion in model container [2022-07-22 17:25:38,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 05:25:38" (3/3) ... [2022-07-22 17:25:38,908 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product13.cil.c [2022-07-22 17:25:38,920 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 17:25:38,920 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 17:25:38,965 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 17:25:38,970 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4dff091d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@47313800 [2022-07-22 17:25:38,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 17:25:38,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 286 states, 223 states have (on average 1.5381165919282511) internal successors, (343), 227 states have internal predecessors, (343), 43 states have call successors, (43), 18 states have call predecessors, (43), 18 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) [2022-07-22 17:25:38,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-22 17:25:38,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:38,992 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:38,992 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:38,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:38,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1913715365, now seen corresponding path program 1 times [2022-07-22 17:25:39,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:39,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035306039] [2022-07-22 17:25:39,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:39,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:39,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:39,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:39,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:25:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:39,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:25:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:39,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:25:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:39,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 17:25:39,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:39,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 17:25:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:39,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:25:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:39,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:25:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:39,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:25:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:39,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:25:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:39,474 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:25:39,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:39,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035306039] [2022-07-22 17:25:39,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035306039] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:25:39,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057668890] [2022-07-22 17:25:39,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:39,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:25:39,477 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:25:39,478 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:25:39,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 17:25:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:39,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 17:25:39,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:25:39,793 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:25:39,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:25:39,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057668890] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:39,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:25:39,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [8] total 8 [2022-07-22 17:25:39,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19611026] [2022-07-22 17:25:39,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:39,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 17:25:39,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:39,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 17:25:39,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:25:39,839 INFO L87 Difference]: Start difference. First operand has 286 states, 223 states have (on average 1.5381165919282511) internal successors, (343), 227 states have internal predecessors, (343), 43 states have call successors, (43), 18 states have call predecessors, (43), 18 states have return successors, (43), 42 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:39,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:39,899 INFO L93 Difference]: Finished difference Result 422 states and 620 transitions. [2022-07-22 17:25:39,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 17:25:39,904 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2022-07-22 17:25:39,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:39,914 INFO L225 Difference]: With dead ends: 422 [2022-07-22 17:25:39,914 INFO L226 Difference]: Without dead ends: 278 [2022-07-22 17:25:39,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:25:39,921 INFO L413 NwaCegarLoop]: 423 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, 423 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:39,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 423 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:25:39,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-22 17:25:39,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2022-07-22 17:25:39,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 217 states have (on average 1.5299539170506913) internal successors, (332), 219 states have internal predecessors, (332), 43 states have call successors, (43), 18 states have call predecessors, (43), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-07-22 17:25:39,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 415 transitions. [2022-07-22 17:25:39,989 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 415 transitions. Word has length 100 [2022-07-22 17:25:39,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:39,990 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 415 transitions. [2022-07-22 17:25:39,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:39,990 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 415 transitions. [2022-07-22 17:25:39,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 17:25:39,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:39,997 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:40,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 17:25:40,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-22 17:25:40,212 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:40,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:40,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1719114013, now seen corresponding path program 1 times [2022-07-22 17:25:40,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:40,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209673328] [2022-07-22 17:25:40,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:40,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:40,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:40,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:40,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:40,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:25:40,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:40,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:25:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:40,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:25:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:40,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 17:25:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:40,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 17:25:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:40,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:25:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:40,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:25:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:40,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:25:40,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:40,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:25:40,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:40,443 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 17:25:40,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:40,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209673328] [2022-07-22 17:25:40,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209673328] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:25:40,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156477286] [2022-07-22 17:25:40,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:40,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:25:40,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:25:40,473 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:25:40,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 17:25:40,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:40,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 17:25:40,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:25:40,761 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:25:40,761 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:25:40,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156477286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:40,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:25:40,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-22 17:25:40,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465435059] [2022-07-22 17:25:40,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:40,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:25:40,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:40,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:25:40,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:25:40,764 INFO L87 Difference]: Start difference. First operand 278 states and 415 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:40,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:40,806 INFO L93 Difference]: Finished difference Result 411 states and 597 transitions. [2022-07-22 17:25:40,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:25:40,806 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 101 [2022-07-22 17:25:40,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:40,809 INFO L225 Difference]: With dead ends: 411 [2022-07-22 17:25:40,809 INFO L226 Difference]: Without dead ends: 281 [2022-07-22 17:25:40,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:25:40,812 INFO L413 NwaCegarLoop]: 413 mSDtfsCounter, 1 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:40,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 824 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:25:40,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-07-22 17:25:40,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 280. [2022-07-22 17:25:40,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 219 states have (on average 1.5251141552511416) internal successors, (334), 221 states have internal predecessors, (334), 43 states have call successors, (43), 18 states have call predecessors, (43), 17 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-07-22 17:25:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 417 transitions. [2022-07-22 17:25:40,833 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 417 transitions. Word has length 101 [2022-07-22 17:25:40,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:40,834 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 417 transitions. [2022-07-22 17:25:40,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:40,834 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 417 transitions. [2022-07-22 17:25:40,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-22 17:25:40,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:40,839 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:40,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 17:25:41,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-22 17:25:41,048 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:41,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:41,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2112385452, now seen corresponding path program 1 times [2022-07-22 17:25:41,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:41,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381239771] [2022-07-22 17:25:41,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:41,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:41,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:25:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:25:41,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:25:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 17:25:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:25:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:25:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:25:41,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:25:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:25:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:25:41,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:41,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381239771] [2022-07-22 17:25:41,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381239771] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:25:41,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759488702] [2022-07-22 17:25:41,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:41,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:25:41,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:25:41,212 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:25:41,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 17:25:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 1033 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:25:41,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:25:41,507 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 17:25:41,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:25:41,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759488702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:41,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:25:41,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-22 17:25:41,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536643398] [2022-07-22 17:25:41,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:41,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 17:25:41,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:41,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 17:25:41,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:25:41,511 INFO L87 Difference]: Start difference. First operand 280 states and 417 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:41,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:41,542 INFO L93 Difference]: Finished difference Result 585 states and 885 transitions. [2022-07-22 17:25:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 17:25:41,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-07-22 17:25:41,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:41,545 INFO L225 Difference]: With dead ends: 585 [2022-07-22 17:25:41,545 INFO L226 Difference]: Without dead ends: 332 [2022-07-22 17:25:41,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:25:41,552 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 99 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:41,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 795 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:25:41,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-07-22 17:25:41,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 324. [2022-07-22 17:25:41,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 252 states have (on average 1.5396825396825398) internal successors, (388), 254 states have internal predecessors, (388), 54 states have call successors, (54), 18 states have call predecessors, (54), 17 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-07-22 17:25:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 493 transitions. [2022-07-22 17:25:41,591 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 493 transitions. Word has length 107 [2022-07-22 17:25:41,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:41,593 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 493 transitions. [2022-07-22 17:25:41,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:41,593 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 493 transitions. [2022-07-22 17:25:41,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-22 17:25:41,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:41,598 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:41,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-22 17:25:41,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:25:41,812 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:41,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:41,812 INFO L85 PathProgramCache]: Analyzing trace with hash 845029478, now seen corresponding path program 1 times [2022-07-22 17:25:41,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:41,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102223648] [2022-07-22 17:25:41,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:41,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:41,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-22 17:25:41,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 17:25:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-22 17:25:41,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 17:25:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:25:41,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:25:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:25:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:25:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:25:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:41,927 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:25:41,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:41,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102223648] [2022-07-22 17:25:41,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102223648] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:25:41,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104347813] [2022-07-22 17:25:41,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:41,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:25:41,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:25:41,931 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:25:41,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 17:25:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:42,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 17:25:42,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:25:42,231 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:25:42,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:25:42,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104347813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:42,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:25:42,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-07-22 17:25:42,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289537391] [2022-07-22 17:25:42,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:42,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:25:42,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:42,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:25:42,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:25:42,234 INFO L87 Difference]: Start difference. First operand 324 states and 493 transitions. Second operand has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:25:42,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:42,287 INFO L93 Difference]: Finished difference Result 639 states and 976 transitions. [2022-07-22 17:25:42,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:25:42,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2022-07-22 17:25:42,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:42,292 INFO L225 Difference]: With dead ends: 639 [2022-07-22 17:25:42,292 INFO L226 Difference]: Without dead ends: 326 [2022-07-22 17:25:42,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-22 17:25:42,294 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 117 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:42,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 1487 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:25:42,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2022-07-22 17:25:42,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2022-07-22 17:25:42,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 253 states have (on average 1.5375494071146245) internal successors, (389), 256 states have internal predecessors, (389), 54 states have call successors, (54), 18 states have call predecessors, (54), 18 states have return successors, (53), 51 states have call predecessors, (53), 51 states have call successors, (53) [2022-07-22 17:25:42,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 496 transitions. [2022-07-22 17:25:42,312 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 496 transitions. Word has length 108 [2022-07-22 17:25:42,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:42,313 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 496 transitions. [2022-07-22 17:25:42,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.5) internal successors, (74), 5 states have internal predecessors, (74), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:25:42,313 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 496 transitions. [2022-07-22 17:25:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 17:25:42,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:42,315 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:42,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 17:25:42,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:25:42,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:42,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:42,540 INFO L85 PathProgramCache]: Analyzing trace with hash -524121345, now seen corresponding path program 1 times [2022-07-22 17:25:42,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:42,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779811033] [2022-07-22 17:25:42,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:42,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:42,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:42,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:42,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:42,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:42,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:25:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:42,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-22 17:25:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:42,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 17:25:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:42,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 17:25:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:42,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:25:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:42,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 17:25:42,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:42,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:25:42,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:42,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:25:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:42,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:25:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:25:42,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:42,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779811033] [2022-07-22 17:25:42,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779811033] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:25:42,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454730280] [2022-07-22 17:25:42,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:42,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:25:42,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:25:42,682 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:25:42,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 17:25:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:42,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 1041 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 17:25:42,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:25:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 17:25:42,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 17:25:42,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454730280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:42,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 17:25:42,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-07-22 17:25:42,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670918268] [2022-07-22 17:25:42,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:42,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 17:25:42,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:42,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 17:25:42,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:25:42,989 INFO L87 Difference]: Start difference. First operand 326 states and 496 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:25:43,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:43,062 INFO L93 Difference]: Finished difference Result 641 states and 981 transitions. [2022-07-22 17:25:43,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 17:25:43,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2022-07-22 17:25:43,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:43,066 INFO L225 Difference]: With dead ends: 641 [2022-07-22 17:25:43,066 INFO L226 Difference]: Without dead ends: 328 [2022-07-22 17:25:43,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-22 17:25:43,068 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 116 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:43,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1476 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 17:25:43,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-07-22 17:25:43,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2022-07-22 17:25:43,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 254 states have (on average 1.5354330708661417) internal successors, (390), 258 states have internal predecessors, (390), 54 states have call successors, (54), 18 states have call predecessors, (54), 19 states have return successors, (58), 51 states have call predecessors, (58), 51 states have call successors, (58) [2022-07-22 17:25:43,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 502 transitions. [2022-07-22 17:25:43,084 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 502 transitions. Word has length 109 [2022-07-22 17:25:43,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:43,085 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 502 transitions. [2022-07-22 17:25:43,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:25:43,085 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 502 transitions. [2022-07-22 17:25:43,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-22 17:25:43,087 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:43,087 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:43,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 17:25:43,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:25:43,312 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:43,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:43,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1754738606, now seen corresponding path program 1 times [2022-07-22 17:25:43,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:43,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589511567] [2022-07-22 17:25:43,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:43,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:43,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:43,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:43,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:43,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:25:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:43,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:25:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:43,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 17:25:43,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:43,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 17:25:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:43,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:25:43,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:43,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 17:25:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:43,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:25:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:43,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:25:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:43,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:25:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:25:43,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:43,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589511567] [2022-07-22 17:25:43,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589511567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:43,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:25:43,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:25:43,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228268557] [2022-07-22 17:25:43,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:43,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:25:43,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:43,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:25:43,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:25:43,405 INFO L87 Difference]: Start difference. First operand 328 states and 502 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:25:44,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:44,456 INFO L93 Difference]: Finished difference Result 696 states and 1071 transitions. [2022-07-22 17:25:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:25:44,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2022-07-22 17:25:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:44,460 INFO L225 Difference]: With dead ends: 696 [2022-07-22 17:25:44,460 INFO L226 Difference]: Without dead ends: 391 [2022-07-22 17:25:44,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:25:44,462 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 745 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1318 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 762 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 1536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:44,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [762 Valid, 1104 Invalid, 1536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1318 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:25:44,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-07-22 17:25:44,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 328. [2022-07-22 17:25:44,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 254 states have (on average 1.5354330708661417) internal successors, (390), 258 states have internal predecessors, (390), 54 states have call successors, (54), 18 states have call predecessors, (54), 19 states have return successors, (57), 51 states have call predecessors, (57), 51 states have call successors, (57) [2022-07-22 17:25:44,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 501 transitions. [2022-07-22 17:25:44,482 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 501 transitions. Word has length 110 [2022-07-22 17:25:44,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:44,482 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 501 transitions. [2022-07-22 17:25:44,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:25:44,482 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 501 transitions. [2022-07-22 17:25:44,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 17:25:44,484 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:44,484 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:44,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 17:25:44,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:44,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:44,485 INFO L85 PathProgramCache]: Analyzing trace with hash 709124621, now seen corresponding path program 2 times [2022-07-22 17:25:44,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:44,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137073929] [2022-07-22 17:25:44,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:44,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:44,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:44,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:44,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:44,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:44,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:44,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:44,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:25:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:44,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:25:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:44,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 17:25:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:44,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 17:25:44,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:44,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:25:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:44,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 17:25:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:44,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:25:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:44,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:25:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:44,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:25:44,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 17:25:44,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:44,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137073929] [2022-07-22 17:25:44,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137073929] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:44,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:25:44,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 17:25:44,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799271300] [2022-07-22 17:25:44,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:44,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 17:25:44,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:44,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 17:25:44,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-22 17:25:44,596 INFO L87 Difference]: Start difference. First operand 328 states and 501 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:25:45,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:45,608 INFO L93 Difference]: Finished difference Result 698 states and 1074 transitions. [2022-07-22 17:25:45,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 17:25:45,608 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 111 [2022-07-22 17:25:45,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:45,611 INFO L225 Difference]: With dead ends: 698 [2022-07-22 17:25:45,611 INFO L226 Difference]: Without dead ends: 393 [2022-07-22 17:25:45,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:25:45,613 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 741 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 1545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:45,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1105 Invalid, 1545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 17:25:45,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-07-22 17:25:45,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 330. [2022-07-22 17:25:45,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 255 states have (on average 1.5333333333333334) internal successors, (391), 260 states have internal predecessors, (391), 54 states have call successors, (54), 18 states have call predecessors, (54), 20 states have return successors, (59), 51 states have call predecessors, (59), 51 states have call successors, (59) [2022-07-22 17:25:45,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 504 transitions. [2022-07-22 17:25:45,636 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 504 transitions. Word has length 111 [2022-07-22 17:25:45,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:45,637 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 504 transitions. [2022-07-22 17:25:45,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:25:45,637 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 504 transitions. [2022-07-22 17:25:45,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-22 17:25:45,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:45,639 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:45,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 17:25:45,640 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:45,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:45,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1028582029, now seen corresponding path program 1 times [2022-07-22 17:25:45,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:45,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46524011] [2022-07-22 17:25:45,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:45,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:45,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:45,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:45,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:45,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:45,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:45,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:25:45,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:45,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:25:45,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:25:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:45,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 17:25:45,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:45,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:25:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:45,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-22 17:25:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:45,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:25:45,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:45,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:25:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:45,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:25:45,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:45,748 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:25:45,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:45,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46524011] [2022-07-22 17:25:45,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46524011] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:45,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:25:45,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 17:25:45,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956139369] [2022-07-22 17:25:45,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:45,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 17:25:45,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:45,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 17:25:45,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:25:45,750 INFO L87 Difference]: Start difference. First operand 330 states and 504 transitions. Second operand has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:25:47,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:47,224 INFO L93 Difference]: Finished difference Result 696 states and 1069 transitions. [2022-07-22 17:25:47,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:25:47,225 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 112 [2022-07-22 17:25:47,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:47,227 INFO L225 Difference]: With dead ends: 696 [2022-07-22 17:25:47,227 INFO L226 Difference]: Without dead ends: 393 [2022-07-22 17:25:47,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-22 17:25:47,229 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 847 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:47,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1385 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 17:25:47,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-07-22 17:25:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 330. [2022-07-22 17:25:47,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 255 states have (on average 1.5333333333333334) internal successors, (391), 260 states have internal predecessors, (391), 54 states have call successors, (54), 18 states have call predecessors, (54), 20 states have return successors, (58), 51 states have call predecessors, (58), 51 states have call successors, (58) [2022-07-22 17:25:47,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 503 transitions. [2022-07-22 17:25:47,248 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 503 transitions. Word has length 112 [2022-07-22 17:25:47,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:47,248 INFO L495 AbstractCegarLoop]: Abstraction has 330 states and 503 transitions. [2022-07-22 17:25:47,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.7) internal successors, (77), 8 states have internal predecessors, (77), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:25:47,248 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 503 transitions. [2022-07-22 17:25:47,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 17:25:47,250 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:47,250 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:47,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 17:25:47,251 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:47,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:47,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1918526, now seen corresponding path program 2 times [2022-07-22 17:25:47,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:47,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94635073] [2022-07-22 17:25:47,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:47,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:47,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:47,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:47,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:47,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:25:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:47,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:25:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:47,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:25:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:47,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 17:25:47,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:47,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:25:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:47,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 17:25:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:47,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:25:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:47,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:25:47,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:47,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:25:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:47,379 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-22 17:25:47,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:47,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94635073] [2022-07-22 17:25:47,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94635073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:47,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:25:47,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 17:25:47,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332403356] [2022-07-22 17:25:47,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:47,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 17:25:47,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:47,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 17:25:47,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-22 17:25:47,381 INFO L87 Difference]: Start difference. First operand 330 states and 503 transitions. Second operand has 11 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:25:48,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:48,814 INFO L93 Difference]: Finished difference Result 698 states and 1075 transitions. [2022-07-22 17:25:48,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 17:25:48,814 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 113 [2022-07-22 17:25:48,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:48,817 INFO L225 Difference]: With dead ends: 698 [2022-07-22 17:25:48,817 INFO L226 Difference]: Without dead ends: 395 [2022-07-22 17:25:48,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-07-22 17:25:48,818 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 843 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2483 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 2483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:48,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1386 Invalid, 2745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 2483 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-22 17:25:48,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2022-07-22 17:25:48,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 332. [2022-07-22 17:25:48,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 256 states have (on average 1.53125) internal successors, (392), 262 states have internal predecessors, (392), 54 states have call successors, (54), 18 states have call predecessors, (54), 21 states have return successors, (63), 51 states have call predecessors, (63), 51 states have call successors, (63) [2022-07-22 17:25:48,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 509 transitions. [2022-07-22 17:25:48,843 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 509 transitions. Word has length 113 [2022-07-22 17:25:48,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:48,845 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 509 transitions. [2022-07-22 17:25:48,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 4 states have call successors, (15), 5 states have call predecessors, (15), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-22 17:25:48,845 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 509 transitions. [2022-07-22 17:25:48,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-22 17:25:48,848 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:48,848 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:48,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 17:25:48,848 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:48,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:48,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1406487480, now seen corresponding path program 1 times [2022-07-22 17:25:48,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:48,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219050193] [2022-07-22 17:25:48,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:48,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:48,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:48,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:48,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:25:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:48,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:25:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:48,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:25:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:48,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 17:25:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:48,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 17:25:48,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:48,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:25:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:48,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:25:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:48,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:25:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:48,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:25:48,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:48,957 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:25:48,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:48,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219050193] [2022-07-22 17:25:48,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219050193] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 17:25:48,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214765105] [2022-07-22 17:25:48,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:48,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:25:48,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 17:25:48,960 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 17:25:48,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 17:25:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:49,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1046 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 17:25:49,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 17:25:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:25:49,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 17:25:49,278 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:25:49,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214765105] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 17:25:49,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 17:25:49,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4, 4] total 10 [2022-07-22 17:25:49,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472966992] [2022-07-22 17:25:49,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 17:25:49,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 17:25:49,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:49,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 17:25:49,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:25:49,282 INFO L87 Difference]: Start difference. First operand 332 states and 509 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 17:25:50,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:50,384 INFO L93 Difference]: Finished difference Result 852 states and 1373 transitions. [2022-07-22 17:25:50,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 17:25:50,384 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 114 [2022-07-22 17:25:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:50,388 INFO L225 Difference]: With dead ends: 852 [2022-07-22 17:25:50,389 INFO L226 Difference]: Without dead ends: 722 [2022-07-22 17:25:50,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:25:50,390 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 1023 mSDsluCounter, 959 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:50,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1068 Valid, 1496 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 17:25:50,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-07-22 17:25:50,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 635. [2022-07-22 17:25:50,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 495 states have (on average 1.595959595959596) internal successors, (790), 501 states have internal predecessors, (790), 118 states have call successors, (118), 18 states have call predecessors, (118), 21 states have return successors, (137), 115 states have call predecessors, (137), 115 states have call successors, (137) [2022-07-22 17:25:50,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 1045 transitions. [2022-07-22 17:25:50,427 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 1045 transitions. Word has length 114 [2022-07-22 17:25:50,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:50,427 INFO L495 AbstractCegarLoop]: Abstraction has 635 states and 1045 transitions. [2022-07-22 17:25:50,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 7 states have internal predecessors, (107), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 17:25:50,428 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 1045 transitions. [2022-07-22 17:25:50,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-22 17:25:50,440 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:50,440 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:50,459 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-22 17:25:50,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 17:25:50,647 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:50,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:50,648 INFO L85 PathProgramCache]: Analyzing trace with hash 970308843, now seen corresponding path program 1 times [2022-07-22 17:25:50,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:50,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603608839] [2022-07-22 17:25:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:50,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:50,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:50,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:50,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:50,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:25:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:50,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:25:50,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:50,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:25:50,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:50,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 17:25:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:50,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 17:25:50,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:50,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:25:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:50,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:25:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:50,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:25:50,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:50,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 17:25:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:50,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:25:50,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:50,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603608839] [2022-07-22 17:25:50,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603608839] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:50,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:25:50,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:25:50,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147306463] [2022-07-22 17:25:50,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:50,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:25:50,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:50,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:25:50,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:25:50,754 INFO L87 Difference]: Start difference. First operand 635 states and 1045 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:51,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:51,588 INFO L93 Difference]: Finished difference Result 1573 states and 2652 transitions. [2022-07-22 17:25:51,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:25:51,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-07-22 17:25:51,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:51,594 INFO L225 Difference]: With dead ends: 1573 [2022-07-22 17:25:51,594 INFO L226 Difference]: Without dead ends: 1006 [2022-07-22 17:25:51,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:25:51,597 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 734 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:51,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 981 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:25:51,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-07-22 17:25:51,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 935. [2022-07-22 17:25:51,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 935 states, 731 states have (on average 1.6073871409028728) internal successors, (1175), 737 states have internal predecessors, (1175), 182 states have call successors, (182), 18 states have call predecessors, (182), 21 states have return successors, (211), 179 states have call predecessors, (211), 179 states have call successors, (211) [2022-07-22 17:25:51,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1568 transitions. [2022-07-22 17:25:51,652 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1568 transitions. Word has length 120 [2022-07-22 17:25:51,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:51,652 INFO L495 AbstractCegarLoop]: Abstraction has 935 states and 1568 transitions. [2022-07-22 17:25:51,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:51,652 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1568 transitions. [2022-07-22 17:25:51,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-22 17:25:51,657 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:51,657 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:51,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 17:25:51,658 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:51,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:51,658 INFO L85 PathProgramCache]: Analyzing trace with hash 955996274, now seen corresponding path program 1 times [2022-07-22 17:25:51,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:51,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644876959] [2022-07-22 17:25:51,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:51,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:51,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:51,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:51,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:51,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:51,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:25:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:51,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:25:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:51,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:25:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:51,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 17:25:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:51,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 17:25:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:51,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:25:51,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:51,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:25:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:51,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:25:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:51,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:25:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:51,750 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:25:51,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:51,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644876959] [2022-07-22 17:25:51,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644876959] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:51,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:25:51,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:25:51,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658077122] [2022-07-22 17:25:51,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:51,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:25:51,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:51,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:25:51,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:25:51,752 INFO L87 Difference]: Start difference. First operand 935 states and 1568 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:52,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:52,583 INFO L93 Difference]: Finished difference Result 2288 states and 3897 transitions. [2022-07-22 17:25:52,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:25:52,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 121 [2022-07-22 17:25:52,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:52,592 INFO L225 Difference]: With dead ends: 2288 [2022-07-22 17:25:52,592 INFO L226 Difference]: Without dead ends: 1474 [2022-07-22 17:25:52,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:25:52,596 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 732 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:52,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [747 Valid, 962 Invalid, 891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:25:52,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2022-07-22 17:25:52,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1403. [2022-07-22 17:25:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1104 states have (on average 1.6141304347826086) internal successors, (1782), 1110 states have internal predecessors, (1782), 277 states have call successors, (277), 18 states have call predecessors, (277), 21 states have return successors, (306), 274 states have call predecessors, (306), 274 states have call successors, (306) [2022-07-22 17:25:52,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 2365 transitions. [2022-07-22 17:25:52,693 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 2365 transitions. Word has length 121 [2022-07-22 17:25:52,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:52,694 INFO L495 AbstractCegarLoop]: Abstraction has 1403 states and 2365 transitions. [2022-07-22 17:25:52,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:52,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 2365 transitions. [2022-07-22 17:25:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-22 17:25:52,701 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:52,701 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:52,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 17:25:52,702 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:52,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:52,702 INFO L85 PathProgramCache]: Analyzing trace with hash -89957207, now seen corresponding path program 1 times [2022-07-22 17:25:52,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:52,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470677526] [2022-07-22 17:25:52,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:52,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:52,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:52,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:52,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:52,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:52,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:52,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:25:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:52,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:25:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:52,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:25:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:52,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 17:25:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:52,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-22 17:25:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:52,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:25:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:52,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:25:52,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:52,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:25:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:52,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:25:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:52,779 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:25:52,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:52,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470677526] [2022-07-22 17:25:52,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470677526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:52,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:25:52,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:25:52,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713012181] [2022-07-22 17:25:52,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:52,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:25:52,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:52,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:25:52,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:25:52,782 INFO L87 Difference]: Start difference. First operand 1403 states and 2365 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:53,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:53,610 INFO L93 Difference]: Finished difference Result 3335 states and 5738 transitions. [2022-07-22 17:25:53,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:25:53,611 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2022-07-22 17:25:53,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:53,623 INFO L225 Difference]: With dead ends: 3335 [2022-07-22 17:25:53,623 INFO L226 Difference]: Without dead ends: 2178 [2022-07-22 17:25:53,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:25:53,628 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 730 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:53,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [745 Valid, 957 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:25:53,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2178 states. [2022-07-22 17:25:53,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2178 to 2107. [2022-07-22 17:25:53,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2107 states, 1685 states have (on average 1.6195845697329376) internal successors, (2729), 1691 states have internal predecessors, (2729), 400 states have call successors, (400), 18 states have call predecessors, (400), 21 states have return successors, (445), 397 states have call predecessors, (445), 397 states have call successors, (445) [2022-07-22 17:25:53,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2107 states to 2107 states and 3574 transitions. [2022-07-22 17:25:53,738 INFO L78 Accepts]: Start accepts. Automaton has 2107 states and 3574 transitions. Word has length 122 [2022-07-22 17:25:53,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:53,739 INFO L495 AbstractCegarLoop]: Abstraction has 2107 states and 3574 transitions. [2022-07-22 17:25:53,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:53,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2107 states and 3574 transitions. [2022-07-22 17:25:53,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-22 17:25:53,748 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:53,748 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:53,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 17:25:53,749 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:53,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:53,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1558186735, now seen corresponding path program 1 times [2022-07-22 17:25:53,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:53,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883219593] [2022-07-22 17:25:53,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:53,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:53,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:53,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:53,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:53,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:53,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:25:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:53,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:25:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:53,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:25:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:53,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 17:25:53,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:53,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 17:25:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:53,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:25:53,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:53,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:25:53,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:53,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:25:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:53,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 17:25:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:25:53,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:53,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883219593] [2022-07-22 17:25:53,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883219593] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:53,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:25:53,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:25:53,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680905835] [2022-07-22 17:25:53,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:53,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:25:53,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:53,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:25:53,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:25:53,837 INFO L87 Difference]: Start difference. First operand 2107 states and 3574 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:54,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:54,692 INFO L93 Difference]: Finished difference Result 4954 states and 8592 transitions. [2022-07-22 17:25:54,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:25:54,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2022-07-22 17:25:54,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:54,711 INFO L225 Difference]: With dead ends: 4954 [2022-07-22 17:25:54,711 INFO L226 Difference]: Without dead ends: 3297 [2022-07-22 17:25:54,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:25:54,717 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 728 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:54,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 957 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:25:54,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3297 states. [2022-07-22 17:25:54,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3297 to 3226. [2022-07-22 17:25:54,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 2625 states have (on average 1.6228571428571428) internal successors, (4260), 2631 states have internal predecessors, (4260), 579 states have call successors, (579), 18 states have call predecessors, (579), 21 states have return successors, (650), 576 states have call predecessors, (650), 576 states have call successors, (650) [2022-07-22 17:25:54,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 5489 transitions. [2022-07-22 17:25:54,924 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 5489 transitions. Word has length 123 [2022-07-22 17:25:54,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:54,925 INFO L495 AbstractCegarLoop]: Abstraction has 3226 states and 5489 transitions. [2022-07-22 17:25:54,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:54,925 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 5489 transitions. [2022-07-22 17:25:54,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 17:25:54,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:54,937 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:54,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 17:25:54,938 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:54,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash -458782707, now seen corresponding path program 1 times [2022-07-22 17:25:54,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:54,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37686273] [2022-07-22 17:25:54,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:54,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:54,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:54,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:54,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:55,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:25:55,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:55,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:25:55,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:55,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:25:55,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:55,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 17:25:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:55,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 17:25:55,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:55,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:25:55,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:55,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 17:25:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:55,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 17:25:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:55,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:25:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:55,020 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:25:55,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:55,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37686273] [2022-07-22 17:25:55,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37686273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:55,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:25:55,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:25:55,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880167417] [2022-07-22 17:25:55,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:55,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:25:55,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:55,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:25:55,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:25:55,023 INFO L87 Difference]: Start difference. First operand 3226 states and 5489 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:55,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:55,895 INFO L93 Difference]: Finished difference Result 7872 states and 13691 transitions. [2022-07-22 17:25:55,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:25:55,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 124 [2022-07-22 17:25:55,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:55,926 INFO L225 Difference]: With dead ends: 7872 [2022-07-22 17:25:55,927 INFO L226 Difference]: Without dead ends: 5328 [2022-07-22 17:25:55,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:25:55,936 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 726 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:55,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 983 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:25:55,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5328 states. [2022-07-22 17:25:56,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5328 to 5257. [2022-07-22 17:25:56,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 4280 states have (on average 1.6149532710280374) internal successors, (6912), 4286 states have internal predecessors, (6912), 955 states have call successors, (955), 18 states have call predecessors, (955), 21 states have return successors, (1070), 952 states have call predecessors, (1070), 952 states have call successors, (1070) [2022-07-22 17:25:56,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 8937 transitions. [2022-07-22 17:25:56,265 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 8937 transitions. Word has length 124 [2022-07-22 17:25:56,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:56,266 INFO L495 AbstractCegarLoop]: Abstraction has 5257 states and 8937 transitions. [2022-07-22 17:25:56,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:56,267 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 8937 transitions. [2022-07-22 17:25:56,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-22 17:25:56,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:56,307 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:56,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 17:25:56,307 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:56,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:56,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1450059347, now seen corresponding path program 1 times [2022-07-22 17:25:56,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:56,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505701273] [2022-07-22 17:25:56,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:56,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:56,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:56,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:56,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:56,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:56,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:56,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:25:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:56,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:25:56,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:56,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:25:56,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:56,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 17:25:56,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:56,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 17:25:56,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:56,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 17:25:56,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:56,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 17:25:56,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:56,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 17:25:56,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:56,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:25:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:25:56,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:56,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505701273] [2022-07-22 17:25:56,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505701273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:56,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:25:56,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:25:56,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940571311] [2022-07-22 17:25:56,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:56,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:25:56,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:56,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:25:56,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:25:56,382 INFO L87 Difference]: Start difference. First operand 5257 states and 8937 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:57,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:57,434 INFO L93 Difference]: Finished difference Result 13014 states and 22600 transitions. [2022-07-22 17:25:57,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:25:57,435 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 125 [2022-07-22 17:25:57,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:57,493 INFO L225 Difference]: With dead ends: 13014 [2022-07-22 17:25:57,494 INFO L226 Difference]: Without dead ends: 8816 [2022-07-22 17:25:57,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:25:57,513 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 724 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:57,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 967 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:25:57,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8816 states. [2022-07-22 17:25:57,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8816 to 8745. [2022-07-22 17:25:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8745 states, 7162 states have (on average 1.6121195196872382) internal successors, (11546), 7168 states have internal predecessors, (11546), 1561 states have call successors, (1561), 18 states have call predecessors, (1561), 21 states have return successors, (1754), 1558 states have call predecessors, (1754), 1558 states have call successors, (1754) [2022-07-22 17:25:58,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8745 states to 8745 states and 14861 transitions. [2022-07-22 17:25:58,031 INFO L78 Accepts]: Start accepts. Automaton has 8745 states and 14861 transitions. Word has length 125 [2022-07-22 17:25:58,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:25:58,032 INFO L495 AbstractCegarLoop]: Abstraction has 8745 states and 14861 transitions. [2022-07-22 17:25:58,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:58,032 INFO L276 IsEmpty]: Start isEmpty. Operand 8745 states and 14861 transitions. [2022-07-22 17:25:58,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-22 17:25:58,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:25:58,056 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:25:58,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 17:25:58,056 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:25:58,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:25:58,057 INFO L85 PathProgramCache]: Analyzing trace with hash -54392341, now seen corresponding path program 1 times [2022-07-22 17:25:58,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:25:58,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535962665] [2022-07-22 17:25:58,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:25:58,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:25:58,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:58,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:25:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:58,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:25:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:58,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:25:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:58,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:25:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:58,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:25:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:58,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:25:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:58,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 17:25:58,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:58,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 17:25:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:58,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 17:25:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:58,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 17:25:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:58,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 17:25:58,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:58,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 17:25:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:25:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:25:58,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:25:58,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535962665] [2022-07-22 17:25:58,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535962665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:25:58,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:25:58,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:25:58,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270574943] [2022-07-22 17:25:58,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:25:58,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:25:58,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:25:58,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:25:58,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:25:58,132 INFO L87 Difference]: Start difference. First operand 8745 states and 14861 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:25:59,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:25:59,340 INFO L93 Difference]: Finished difference Result 22673 states and 39306 transitions. [2022-07-22 17:25:59,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:25:59,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 126 [2022-07-22 17:25:59,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:25:59,398 INFO L225 Difference]: With dead ends: 22673 [2022-07-22 17:25:59,399 INFO L226 Difference]: Without dead ends: 15409 [2022-07-22 17:25:59,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:25:59,427 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 722 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 17:25:59,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 991 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 17:25:59,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15409 states. [2022-07-22 17:26:00,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15409 to 15338. [2022-07-22 17:26:00,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15338 states, 12552 states have (on average 1.6022944550669216) internal successors, (20112), 12558 states have internal predecessors, (20112), 2764 states have call successors, (2764), 18 states have call predecessors, (2764), 21 states have return successors, (3101), 2761 states have call predecessors, (3101), 2761 states have call successors, (3101) [2022-07-22 17:26:00,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15338 states to 15338 states and 25977 transitions. [2022-07-22 17:26:00,290 INFO L78 Accepts]: Start accepts. Automaton has 15338 states and 25977 transitions. Word has length 126 [2022-07-22 17:26:00,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:26:00,290 INFO L495 AbstractCegarLoop]: Abstraction has 15338 states and 25977 transitions. [2022-07-22 17:26:00,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:26:00,291 INFO L276 IsEmpty]: Start isEmpty. Operand 15338 states and 25977 transitions. [2022-07-22 17:26:00,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-22 17:26:00,320 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:26:00,321 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:26:00,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 17:26:00,321 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:26:00,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:26:00,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1970450092, now seen corresponding path program 1 times [2022-07-22 17:26:00,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:26:00,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996788532] [2022-07-22 17:26:00,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:26:00,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:26:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:00,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:26:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:00,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:26:00,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:00,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:26:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:00,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:26:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:00,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:26:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:00,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:26:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:00,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 17:26:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:00,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 17:26:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:00,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-22 17:26:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:00,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 17:26:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 17:26:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:00,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-22 17:26:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:00,394 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:26:00,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:26:00,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996788532] [2022-07-22 17:26:00,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996788532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:26:00,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:26:00,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:26:00,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600751081] [2022-07-22 17:26:00,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:26:00,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:26:00,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:26:00,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:26:00,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:26:00,398 INFO L87 Difference]: Start difference. First operand 15338 states and 25977 transitions. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:26:02,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:26:02,049 INFO L93 Difference]: Finished difference Result 40629 states and 70289 transitions. [2022-07-22 17:26:02,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:26:02,049 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 127 [2022-07-22 17:26:02,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:26:02,169 INFO L225 Difference]: With dead ends: 40629 [2022-07-22 17:26:02,169 INFO L226 Difference]: Without dead ends: 27379 [2022-07-22 17:26:02,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:26:02,328 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 720 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:26:02,329 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 959 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:26:02,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27379 states. [2022-07-22 17:26:03,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27379 to 27308. [2022-07-22 17:26:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27308 states, 22483 states have (on average 1.5976515589556555) internal successors, (35920), 22489 states have internal predecessors, (35920), 4803 states have call successors, (4803), 18 states have call predecessors, (4803), 21 states have return successors, (5414), 4800 states have call predecessors, (5414), 4800 states have call successors, (5414) [2022-07-22 17:26:03,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27308 states to 27308 states and 46137 transitions. [2022-07-22 17:26:03,764 INFO L78 Accepts]: Start accepts. Automaton has 27308 states and 46137 transitions. Word has length 127 [2022-07-22 17:26:03,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:26:03,765 INFO L495 AbstractCegarLoop]: Abstraction has 27308 states and 46137 transitions. [2022-07-22 17:26:03,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:26:03,765 INFO L276 IsEmpty]: Start isEmpty. Operand 27308 states and 46137 transitions. [2022-07-22 17:26:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-22 17:26:03,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:26:03,793 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:26:03,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 17:26:03,793 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:26:03,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:26:03,794 INFO L85 PathProgramCache]: Analyzing trace with hash -562245783, now seen corresponding path program 1 times [2022-07-22 17:26:03,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:26:03,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088113899] [2022-07-22 17:26:03,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:26:03,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:26:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:03,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:26:03,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:03,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:26:03,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:03,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:26:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:03,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:26:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:03,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:26:03,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:03,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:26:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:03,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 17:26:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:03,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-22 17:26:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:03,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 17:26:03,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:03,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 17:26:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:03,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-22 17:26:03,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:03,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 17:26:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:03,907 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:26:03,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:26:03,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088113899] [2022-07-22 17:26:03,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088113899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:26:03,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:26:03,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:26:03,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103461323] [2022-07-22 17:26:03,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:26:03,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:26:03,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:26:03,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:26:03,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:26:03,909 INFO L87 Difference]: Start difference. First operand 27308 states and 46137 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:26:06,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:26:06,446 INFO L93 Difference]: Finished difference Result 74416 states and 127888 transitions. [2022-07-22 17:26:06,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:26:06,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 128 [2022-07-22 17:26:06,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:26:06,662 INFO L225 Difference]: With dead ends: 74416 [2022-07-22 17:26:06,662 INFO L226 Difference]: Without dead ends: 49928 [2022-07-22 17:26:06,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:26:06,743 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 718 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 641 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:26:06,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 967 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 641 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-22 17:26:06,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49928 states. [2022-07-22 17:26:09,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49928 to 49857. [2022-07-22 17:26:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49857 states, 41317 states have (on average 1.5916208824454825) internal successors, (65761), 41323 states have internal predecessors, (65761), 8518 states have call successors, (8518), 18 states have call predecessors, (8518), 21 states have return successors, (9661), 8515 states have call predecessors, (9661), 8515 states have call successors, (9661) [2022-07-22 17:26:09,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49857 states to 49857 states and 83940 transitions. [2022-07-22 17:26:09,599 INFO L78 Accepts]: Start accepts. Automaton has 49857 states and 83940 transitions. Word has length 128 [2022-07-22 17:26:09,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:26:09,599 INFO L495 AbstractCegarLoop]: Abstraction has 49857 states and 83940 transitions. [2022-07-22 17:26:09,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:26:09,600 INFO L276 IsEmpty]: Start isEmpty. Operand 49857 states and 83940 transitions. [2022-07-22 17:26:09,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-22 17:26:09,630 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:26:09,631 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:26:09,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 17:26:09,631 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:26:09,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:26:09,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1592914964, now seen corresponding path program 1 times [2022-07-22 17:26:09,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:26:09,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754370315] [2022-07-22 17:26:09,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:26:09,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:26:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:09,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:26:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:09,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:26:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:09,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:26:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:09,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:26:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:09,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:26:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:09,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:26:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 17:26:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:09,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 17:26:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:09,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-22 17:26:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:09,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 17:26:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:09,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 17:26:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:09,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 17:26:09,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:09,728 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:26:09,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:26:09,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754370315] [2022-07-22 17:26:09,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754370315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:26:09,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:26:09,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 17:26:09,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482463591] [2022-07-22 17:26:09,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:26:09,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 17:26:09,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:26:09,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 17:26:09,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 17:26:09,732 INFO L87 Difference]: Start difference. First operand 49857 states and 83940 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:26:13,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:26:13,236 INFO L93 Difference]: Finished difference Result 92902 states and 160019 transitions. [2022-07-22 17:26:13,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 17:26:13,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 129 [2022-07-22 17:26:13,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:26:13,621 INFO L225 Difference]: With dead ends: 92902 [2022-07-22 17:26:13,621 INFO L226 Difference]: Without dead ends: 92772 [2022-07-22 17:26:13,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 17:26:13,674 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 716 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 960 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 17:26:13,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 960 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 17:26:13,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92772 states. [2022-07-22 17:26:17,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92772 to 92701. [2022-07-22 17:26:17,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92701 states, 77362 states have (on average 1.5840722835500634) internal successors, (122547), 77368 states have internal predecessors, (122547), 15317 states have call successors, (15317), 18 states have call predecessors, (15317), 21 states have return successors, (17506), 15314 states have call predecessors, (17506), 15314 states have call successors, (17506) [2022-07-22 17:26:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92701 states to 92701 states and 155370 transitions. [2022-07-22 17:26:17,551 INFO L78 Accepts]: Start accepts. Automaton has 92701 states and 155370 transitions. Word has length 129 [2022-07-22 17:26:17,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:26:17,551 INFO L495 AbstractCegarLoop]: Abstraction has 92701 states and 155370 transitions. [2022-07-22 17:26:17,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-22 17:26:17,551 INFO L276 IsEmpty]: Start isEmpty. Operand 92701 states and 155370 transitions. [2022-07-22 17:26:17,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 17:26:17,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:26:17,583 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:26:17,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 17:26:17,584 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:26:17,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:26:17,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1379119850, now seen corresponding path program 1 times [2022-07-22 17:26:17,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:26:17,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430498250] [2022-07-22 17:26:17,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:26:17,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:26:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:17,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:26:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:17,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:26:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:17,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:26:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:17,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:26:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:17,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:26:17,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:17,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:26:17,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:17,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:26:17,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:17,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:26:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:17,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:26:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:17,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 17:26:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:17,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 17:26:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:17,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 17:26:17,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:17,686 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:26:17,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:26:17,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430498250] [2022-07-22 17:26:17,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430498250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:26:17,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:26:17,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 17:26:17,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554820416] [2022-07-22 17:26:17,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:26:17,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 17:26:17,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:26:17,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 17:26:17,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 17:26:17,688 INFO L87 Difference]: Start difference. First operand 92701 states and 155370 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:26:22,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:26:22,446 INFO L93 Difference]: Finished difference Result 93240 states and 159406 transitions. [2022-07-22 17:26:22,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 17:26:22,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 130 [2022-07-22 17:26:22,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:26:23,023 INFO L225 Difference]: With dead ends: 93240 [2022-07-22 17:26:23,023 INFO L226 Difference]: Without dead ends: 93118 [2022-07-22 17:26:23,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=545, Unknown=0, NotChecked=0, Total=756 [2022-07-22 17:26:23,064 INFO L413 NwaCegarLoop]: 696 mSDtfsCounter, 1245 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 2533 mSolverCounterSat, 505 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1259 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 3038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 505 IncrementalHoareTripleChecker+Valid, 2533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-22 17:26:23,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1259 Valid, 1476 Invalid, 3038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [505 Valid, 2533 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-07-22 17:26:23,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93118 states. [2022-07-22 17:26:26,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93118 to 92949. [2022-07-22 17:26:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92949 states, 77560 states have (on average 1.5837158329035586) internal successors, (122833), 77569 states have internal predecessors, (122833), 15343 states have call successors, (15343), 38 states have call predecessors, (15343), 45 states have return successors, (17537), 15341 states have call predecessors, (17537), 15338 states have call successors, (17537) [2022-07-22 17:26:27,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92949 states to 92949 states and 155713 transitions. [2022-07-22 17:26:27,326 INFO L78 Accepts]: Start accepts. Automaton has 92949 states and 155713 transitions. Word has length 130 [2022-07-22 17:26:27,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 17:26:27,327 INFO L495 AbstractCegarLoop]: Abstraction has 92949 states and 155713 transitions. [2022-07-22 17:26:27,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 17:26:27,327 INFO L276 IsEmpty]: Start isEmpty. Operand 92949 states and 155713 transitions. [2022-07-22 17:26:27,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-22 17:26:27,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 17:26:27,356 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 17:26:27,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 17:26:27,357 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 17:26:27,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 17:26:27,357 INFO L85 PathProgramCache]: Analyzing trace with hash 779802427, now seen corresponding path program 1 times [2022-07-22 17:26:27,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 17:26:27,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142945684] [2022-07-22 17:26:27,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 17:26:27,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 17:26:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:27,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 17:26:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:27,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 17:26:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:27,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 17:26:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:27,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 17:26:27,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:27,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 17:26:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:27,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 17:26:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:27,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 17:26:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:27,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 17:26:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:27,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 17:26:27,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:27,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 17:26:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:27,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 17:26:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:27,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 17:26:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 17:26:27,505 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 17:26:27,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 17:26:27,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142945684] [2022-07-22 17:26:27,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142945684] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 17:26:27,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 17:26:27,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 17:26:27,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388223710] [2022-07-22 17:26:27,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 17:26:27,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 17:26:27,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 17:26:27,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 17:26:27,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-07-22 17:26:27,508 INFO L87 Difference]: Start difference. First operand 92949 states and 155713 transitions. Second operand has 14 states, 12 states have (on average 7.583333333333333) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-22 17:26:32,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 17:26:32,294 INFO L93 Difference]: Finished difference Result 93574 states and 159885 transitions. [2022-07-22 17:26:32,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 17:26:32,296 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.583333333333333) internal successors, (91), 10 states have internal predecessors, (91), 6 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 131 [2022-07-22 17:26:32,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 17:26:32,641 INFO L225 Difference]: With dead ends: 93574 [2022-07-22 17:26:32,641 INFO L226 Difference]: Without dead ends: 93086 [2022-07-22 17:26:32,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=206, Invalid=786, Unknown=0, NotChecked=0, Total=992 [2022-07-22 17:26:32,681 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 1091 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 3925 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 4370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 3925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 17:26:32,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 2095 Invalid, 4370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 3925 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-22 17:26:32,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93086 states. [2022-07-22 17:26:36,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93086 to 92934. [2022-07-22 17:26:36,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92934 states, 77548 states have (on average 1.5837545778098725) internal successors, (122817), 77557 states have internal predecessors, (122817), 15343 states have call successors, (15343), 37 states have call predecessors, (15343), 42 states have return successors, (17536), 15339 states have call predecessors, (17536), 15339 states have call successors, (17536)