./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec27_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_spec27_product30.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 77340ea3311b00efe6580b7964ad9e7e4d288fea0ba2d6706c8abdac4c4c4bb5 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 11:26:33,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:26:33,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:26:33,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:26:33,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:26:33,605 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:26:33,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:26:33,609 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:26:33,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:26:33,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:26:33,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:26:33,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:26:33,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:26:33,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:26:33,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:26:33,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:26:33,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:26:33,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:26:33,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:26:33,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:26:33,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:26:33,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:26:33,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:26:33,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:26:33,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:26:33,642 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:26:33,642 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:26:33,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:26:33,644 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:26:33,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:26:33,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:26:33,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:26:33,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:26:33,649 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:26:33,650 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:26:33,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:26:33,651 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:26:33,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:26:33,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:26:33,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:26:33,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:26:33,653 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:26:33,682 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:26:33,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:26:33,683 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:26:33,684 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:26:33,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:26:33,685 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:26:33,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:26:33,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:26:33,686 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:26:33,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:26:33,687 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:26:33,687 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:26:33,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:26:33,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:26:33,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:26:33,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:26:33,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:26:33,688 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:26:33,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:26:33,689 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:26:33,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:26:33,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:26:33,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:26:33,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:26:33,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:26:33,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:26:33,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:26:33,690 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:26:33,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:26:33,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:26:33,691 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:26:33,691 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:26:33,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:26:33,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:26:33,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77340ea3311b00efe6580b7964ad9e7e4d288fea0ba2d6706c8abdac4c4c4bb5 [2021-12-22 11:26:33,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:26:33,973 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:26:33,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:26:33,987 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:26:33,987 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:26:33,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product30.cil.c [2021-12-22 11:26:34,049 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee3435088/6f865dab3b634e53b5e4d856e9c59369/FLAG84628a387 [2021-12-22 11:26:34,576 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:26:34,577 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product30.cil.c [2021-12-22 11:26:34,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee3435088/6f865dab3b634e53b5e4d856e9c59369/FLAG84628a387 [2021-12-22 11:26:35,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee3435088/6f865dab3b634e53b5e4d856e9c59369 [2021-12-22 11:26:35,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:26:35,070 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:26:35,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:26:35,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:26:35,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:26:35,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:26:35" (1/1) ... [2021-12-22 11:26:35,075 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c0607e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:35, skipping insertion in model container [2021-12-22 11:26:35,076 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:26:35" (1/1) ... [2021-12-22 11:26:35,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:26:35,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:26:35,586 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_spec27_product30.cil.c[47628,47641] [2021-12-22 11:26:35,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:26:35,694 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:26:35,776 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_spec27_product30.cil.c[47628,47641] [2021-12-22 11:26:35,811 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:26:35,839 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:26:35,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:35 WrapperNode [2021-12-22 11:26:35,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:26:35,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:26:35,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:26:35,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:26:35,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:35" (1/1) ... [2021-12-22 11:26:35,879 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:35" (1/1) ... [2021-12-22 11:26:35,932 INFO L137 Inliner]: procedures = 131, calls = 219, calls flagged for inlining = 59, calls inlined = 50, statements flattened = 916 [2021-12-22 11:26:35,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:26:35,933 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:26:35,933 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:26:35,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:26:35,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:35" (1/1) ... [2021-12-22 11:26:35,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:35" (1/1) ... [2021-12-22 11:26:35,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:35" (1/1) ... [2021-12-22 11:26:35,954 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:35" (1/1) ... [2021-12-22 11:26:35,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:35" (1/1) ... [2021-12-22 11:26:35,978 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:35" (1/1) ... [2021-12-22 11:26:35,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:35" (1/1) ... [2021-12-22 11:26:35,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:26:35,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:26:35,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:26:35,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:26:36,001 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:35" (1/1) ... [2021-12-22 11:26:36,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:26:36,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:26:36,053 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) [2021-12-22 11:26:36,081 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 [2021-12-22 11:26:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-22 11:26:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-22 11:26:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-22 11:26:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-22 11:26:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-22 11:26:36,103 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-22 11:26:36,103 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-22 11:26:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-22 11:26:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-22 11:26:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-22 11:26:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-22 11:26:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-22 11:26:36,104 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-22 11:26:36,104 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-22 11:26:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-22 11:26:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-22 11:26:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-22 11:26:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-22 11:26:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-22 11:26:36,105 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-22 11:26:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-22 11:26:36,105 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-22 11:26:36,106 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-22 11:26:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-22 11:26:36,106 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-22 11:26:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:26:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-22 11:26:36,106 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-22 11:26:36,106 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-22 11:26:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-22 11:26:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-22 11:26:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-22 11:26:36,107 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-22 11:26:36,107 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-22 11:26:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-22 11:26:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-22 11:26:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-12-22 11:26:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-12-22 11:26:36,108 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-22 11:26:36,108 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-22 11:26:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-22 11:26:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-22 11:26:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-22 11:26:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-22 11:26:36,109 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-22 11:26:36,109 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-22 11:26:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-22 11:26:36,110 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-22 11:26:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:26:36,110 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-22 11:26:36,110 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-22 11:26:36,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:26:36,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:26:36,382 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:26:36,384 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:26:36,930 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:26:36,947 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:26:36,948 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 11:26:36,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:26:36 BoogieIcfgContainer [2021-12-22 11:26:36,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:26:36,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:26:36,953 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:26:36,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:26:36,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:26:35" (1/3) ... [2021-12-22 11:26:36,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c20022b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:26:36, skipping insertion in model container [2021-12-22 11:26:36,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:26:35" (2/3) ... [2021-12-22 11:26:36,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c20022b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:26:36, skipping insertion in model container [2021-12-22 11:26:36,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:26:36" (3/3) ... [2021-12-22 11:26:36,959 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product30.cil.c [2021-12-22 11:26:36,964 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:26:36,964 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:26:37,017 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:26:37,022 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 11:26:37,023 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:26:37,045 INFO L276 IsEmpty]: Start isEmpty. Operand has 354 states, 274 states have (on average 1.5145985401459854) internal successors, (415), 278 states have internal predecessors, (415), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2021-12-22 11:26:37,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-22 11:26:37,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:37,083 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:37,084 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:37,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:37,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1260939319, now seen corresponding path program 1 times [2021-12-22 11:26:37,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:37,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846098746] [2021-12-22 11:26:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:37,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:37,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:26:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:26:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:26:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 11:26:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 11:26:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 11:26:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 11:26:37,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:26:37,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:26:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 11:26:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 11:26:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 11:26:37,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:26:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 11:26:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 11:26:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 11:26:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,601 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-22 11:26:37,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:37,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846098746] [2021-12-22 11:26:37,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846098746] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:26:37,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676327385] [2021-12-22 11:26:37,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:37,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:37,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:26:37,609 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) [2021-12-22 11:26:37,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 11:26:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:37,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 11:26:37,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:26:38,174 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-22 11:26:38,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:26:38,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676327385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:38,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:26:38,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-22 11:26:38,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373195321] [2021-12-22 11:26:38,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:38,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 11:26:38,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:38,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 11:26:38,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:26:38,214 INFO L87 Difference]: Start difference. First operand has 354 states, 274 states have (on average 1.5145985401459854) internal successors, (415), 278 states have internal predecessors, (415), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:26:38,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:38,295 INFO L93 Difference]: Finished difference Result 554 states and 800 transitions. [2021-12-22 11:26:38,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 11:26:38,297 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 142 [2021-12-22 11:26:38,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:38,310 INFO L225 Difference]: With dead ends: 554 [2021-12-22 11:26:38,310 INFO L226 Difference]: Without dead ends: 347 [2021-12-22 11:26:38,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:26:38,317 INFO L933 BasicCegarLoop]: 519 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, 519 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:38,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:26:38,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-12-22 11:26:38,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 347. [2021-12-22 11:26:38,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 268 states have (on average 1.507462686567164) internal successors, (404), 271 states have internal predecessors, (404), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-12-22 11:26:38,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 511 transitions. [2021-12-22 11:26:38,376 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 511 transitions. Word has length 142 [2021-12-22 11:26:38,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:38,377 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 511 transitions. [2021-12-22 11:26:38,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:26:38,378 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 511 transitions. [2021-12-22 11:26:38,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-22 11:26:38,386 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:38,387 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:38,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-22 11:26:38,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-22 11:26:38,596 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:38,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:38,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1183383258, now seen corresponding path program 1 times [2021-12-22 11:26:38,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:38,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121296130] [2021-12-22 11:26:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:38,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:38,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:38,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:26:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:26:38,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:26:38,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 11:26:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 11:26:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 11:26:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 11:26:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:26:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 11:26:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 11:26:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:26:38,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 11:26:38,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:26:38,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 11:26:38,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 11:26:38,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-22 11:26:38,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:38,773 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-22 11:26:38,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:38,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121296130] [2021-12-22 11:26:38,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121296130] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:26:38,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1925417560] [2021-12-22 11:26:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:38,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:38,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:26:38,780 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) [2021-12-22 11:26:38,782 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 11:26:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 11:26:39,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:26:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-22 11:26:39,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:26:39,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1925417560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:39,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:26:39,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-22 11:26:39,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090362376] [2021-12-22 11:26:39,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:39,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:26:39,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:39,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:26:39,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:26:39,290 INFO L87 Difference]: Start difference. First operand 347 states and 511 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:26:39,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:39,347 INFO L93 Difference]: Finished difference Result 544 states and 781 transitions. [2021-12-22 11:26:39,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:26:39,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 143 [2021-12-22 11:26:39,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:39,356 INFO L225 Difference]: With dead ends: 544 [2021-12-22 11:26:39,356 INFO L226 Difference]: Without dead ends: 350 [2021-12-22 11:26:39,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:26:39,362 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 1 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:39,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:26:39,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-22 11:26:39,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 349. [2021-12-22 11:26:39,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 270 states have (on average 1.5037037037037038) internal successors, (406), 273 states have internal predecessors, (406), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (53), 53 states have call predecessors, (53), 53 states have call successors, (53) [2021-12-22 11:26:39,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 513 transitions. [2021-12-22 11:26:39,410 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 513 transitions. Word has length 143 [2021-12-22 11:26:39,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:39,410 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 513 transitions. [2021-12-22 11:26:39,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:26:39,411 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 513 transitions. [2021-12-22 11:26:39,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-22 11:26:39,413 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:39,413 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:39,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-22 11:26:39,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-22 11:26:39,614 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:39,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:39,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1938534210, now seen corresponding path program 1 times [2021-12-22 11:26:39,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:39,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081430938] [2021-12-22 11:26:39,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:39,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:39,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:39,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:26:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:26:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:26:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 11:26:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 11:26:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 11:26:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-22 11:26:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 11:26:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 11:26:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 11:26:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 11:26:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 11:26:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:26:39,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 11:26:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-22 11:26:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-22 11:26:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-22 11:26:39,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:39,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081430938] [2021-12-22 11:26:39,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081430938] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:26:39,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832914379] [2021-12-22 11:26:39,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:39,802 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:39,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:26:39,803 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) [2021-12-22 11:26:39,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 11:26:40,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 11:26:40,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:26:40,359 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-22 11:26:40,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:26:40,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832914379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:40,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:26:40,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-22 11:26:40,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123178233] [2021-12-22 11:26:40,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:40,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:26:40,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:40,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:26:40,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:26:40,362 INFO L87 Difference]: Start difference. First operand 349 states and 513 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:26:40,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:40,389 INFO L93 Difference]: Finished difference Result 728 states and 1085 transitions. [2021-12-22 11:26:40,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:26:40,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 152 [2021-12-22 11:26:40,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:40,394 INFO L225 Difference]: With dead ends: 728 [2021-12-22 11:26:40,395 INFO L226 Difference]: Without dead ends: 406 [2021-12-22 11:26:40,397 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:26:40,399 INFO L933 BasicCegarLoop]: 528 mSDtfsCounter, 107 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 991 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:40,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 991 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:26:40,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2021-12-22 11:26:40,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 398. [2021-12-22 11:26:40,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 308 states have (on average 1.5194805194805194) internal successors, (468), 311 states have internal predecessors, (468), 65 states have call successors, (65), 24 states have call predecessors, (65), 24 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-12-22 11:26:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 597 transitions. [2021-12-22 11:26:40,430 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 597 transitions. Word has length 152 [2021-12-22 11:26:40,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:40,430 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 597 transitions. [2021-12-22 11:26:40,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:26:40,430 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 597 transitions. [2021-12-22 11:26:40,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-22 11:26:40,433 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:40,433 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:40,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 11:26:40,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:40,634 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:40,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:40,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1691496173, now seen corresponding path program 1 times [2021-12-22 11:26:40,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:40,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052943314] [2021-12-22 11:26:40,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:40,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:26:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:26:40,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:26:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 11:26:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 11:26:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 11:26:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 11:26:40,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:26:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 11:26:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 11:26:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 11:26:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 11:26:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:26:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 11:26:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-22 11:26:40,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-22 11:26:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:40,846 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-22 11:26:40,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:40,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052943314] [2021-12-22 11:26:40,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052943314] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:26:40,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170472627] [2021-12-22 11:26:40,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:40,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:40,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:26:40,852 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) [2021-12-22 11:26:40,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 11:26:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 1254 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 11:26:41,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:26:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 11:26:41,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:26:41,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170472627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:41,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:26:41,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-22 11:26:41,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775901487] [2021-12-22 11:26:41,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:41,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 11:26:41,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:41,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 11:26:41,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-22 11:26:41,439 INFO L87 Difference]: Start difference. First operand 398 states and 597 transitions. Second operand has 5 states, 4 states have (on average 24.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-22 11:26:41,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:41,514 INFO L93 Difference]: Finished difference Result 787 states and 1184 transitions. [2021-12-22 11:26:41,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 11:26:41,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 153 [2021-12-22 11:26:41,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:41,518 INFO L225 Difference]: With dead ends: 787 [2021-12-22 11:26:41,518 INFO L226 Difference]: Without dead ends: 400 [2021-12-22 11:26:41,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-22 11:26:41,522 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 125 mSDsluCounter, 1362 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1864 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:41,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1864 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:26:41,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-12-22 11:26:41,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2021-12-22 11:26:41,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 309 states have (on average 1.5177993527508091) internal successors, (469), 313 states have internal predecessors, (469), 65 states have call successors, (65), 24 states have call predecessors, (65), 25 states have return successors, (66), 64 states have call predecessors, (66), 64 states have call successors, (66) [2021-12-22 11:26:41,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 600 transitions. [2021-12-22 11:26:41,547 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 600 transitions. Word has length 153 [2021-12-22 11:26:41,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:41,548 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 600 transitions. [2021-12-22 11:26:41,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-22 11:26:41,548 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 600 transitions. [2021-12-22 11:26:41,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-22 11:26:41,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:41,552 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:41,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 11:26:41,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:41,778 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:41,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:41,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1103227742, now seen corresponding path program 1 times [2021-12-22 11:26:41,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:41,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101502775] [2021-12-22 11:26:41,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:41,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 11:26:41,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 11:26:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 11:26:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 11:26:41,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 11:26:41,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 11:26:41,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 11:26:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 11:26:41,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 11:26:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 11:26:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 11:26:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:26:41,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 11:26:41,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 11:26:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-22 11:26:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-22 11:26:41,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:41,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101502775] [2021-12-22 11:26:41,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101502775] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:26:41,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517169665] [2021-12-22 11:26:41,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:41,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:41,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:26:41,928 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) [2021-12-22 11:26:41,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 11:26:42,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 11:26:42,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:26:42,432 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 11:26:42,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:26:42,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517169665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:42,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:26:42,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-22 11:26:42,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643423186] [2021-12-22 11:26:42,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:42,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 11:26:42,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:42,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 11:26:42,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-22 11:26:42,435 INFO L87 Difference]: Start difference. First operand 400 states and 600 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-22 11:26:42,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:42,497 INFO L93 Difference]: Finished difference Result 789 states and 1189 transitions. [2021-12-22 11:26:42,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 11:26:42,498 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 154 [2021-12-22 11:26:42,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:42,501 INFO L225 Difference]: With dead ends: 789 [2021-12-22 11:26:42,501 INFO L226 Difference]: Without dead ends: 402 [2021-12-22 11:26:42,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2021-12-22 11:26:42,503 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 124 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:42,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1853 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:26:42,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2021-12-22 11:26:42,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 402. [2021-12-22 11:26:42,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 310 states have (on average 1.5161290322580645) internal successors, (470), 315 states have internal predecessors, (470), 65 states have call successors, (65), 24 states have call predecessors, (65), 26 states have return successors, (71), 64 states have call predecessors, (71), 64 states have call successors, (71) [2021-12-22 11:26:42,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 606 transitions. [2021-12-22 11:26:42,528 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 606 transitions. Word has length 154 [2021-12-22 11:26:42,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:42,529 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 606 transitions. [2021-12-22 11:26:42,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-22 11:26:42,530 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 606 transitions. [2021-12-22 11:26:42,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-22 11:26:42,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:42,532 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:42,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 11:26:42,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:42,755 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:42,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:42,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1123540966, now seen corresponding path program 1 times [2021-12-22 11:26:42,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:42,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773456994] [2021-12-22 11:26:42,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:42,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:42,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:42,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 11:26:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 11:26:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 11:26:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:26:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 11:26:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 11:26:42,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:26:42,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 11:26:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 11:26:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 11:26:42,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:26:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 11:26:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 11:26:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-22 11:26:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-22 11:26:42,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:42,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773456994] [2021-12-22 11:26:42,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773456994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:42,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:42,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 11:26:42,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571871908] [2021-12-22 11:26:42,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:42,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 11:26:42,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:42,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 11:26:42,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:26:42,915 INFO L87 Difference]: Start difference. First operand 402 states and 606 transitions. Second operand has 9 states, 8 states have (on average 11.75) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-22 11:26:44,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:44,404 INFO L93 Difference]: Finished difference Result 898 states and 1356 transitions. [2021-12-22 11:26:44,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 11:26:44,405 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 155 [2021-12-22 11:26:44,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:44,409 INFO L225 Difference]: With dead ends: 898 [2021-12-22 11:26:44,409 INFO L226 Difference]: Without dead ends: 519 [2021-12-22 11:26:44,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 11:26:44,412 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 1289 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:44,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1306 Valid, 1588 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 11:26:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-12-22 11:26:44,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 402. [2021-12-22 11:26:44,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 310 states have (on average 1.5161290322580645) internal successors, (470), 315 states have internal predecessors, (470), 65 states have call successors, (65), 24 states have call predecessors, (65), 26 states have return successors, (70), 64 states have call predecessors, (70), 64 states have call successors, (70) [2021-12-22 11:26:44,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 605 transitions. [2021-12-22 11:26:44,452 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 605 transitions. Word has length 155 [2021-12-22 11:26:44,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:44,452 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 605 transitions. [2021-12-22 11:26:44,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.75) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-22 11:26:44,453 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 605 transitions. [2021-12-22 11:26:44,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-22 11:26:44,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:44,456 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:44,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 11:26:44,457 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:44,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:44,458 INFO L85 PathProgramCache]: Analyzing trace with hash 487438261, now seen corresponding path program 2 times [2021-12-22 11:26:44,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:44,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523067968] [2021-12-22 11:26:44,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:44,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:44,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:44,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:44,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 11:26:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 11:26:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 11:26:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:26:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 11:26:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 11:26:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 11:26:44,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 11:26:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 11:26:44,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 11:26:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:26:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-22 11:26:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 11:26:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-22 11:26:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-22 11:26:44,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:44,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523067968] [2021-12-22 11:26:44,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523067968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:44,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:44,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 11:26:44,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569987198] [2021-12-22 11:26:44,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:44,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 11:26:44,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:44,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 11:26:44,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:26:44,614 INFO L87 Difference]: Start difference. First operand 402 states and 605 transitions. Second operand has 9 states, 8 states have (on average 11.875) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-22 11:26:46,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:46,073 INFO L93 Difference]: Finished difference Result 900 states and 1359 transitions. [2021-12-22 11:26:46,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 11:26:46,074 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.875) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 156 [2021-12-22 11:26:46,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:46,077 INFO L225 Difference]: With dead ends: 900 [2021-12-22 11:26:46,078 INFO L226 Difference]: Without dead ends: 521 [2021-12-22 11:26:46,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 11:26:46,080 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 1283 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 1623 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 1599 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 1623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:46,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1300 Valid, 1599 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 1623 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 11:26:46,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-12-22 11:26:46,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 404. [2021-12-22 11:26:46,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 311 states have (on average 1.5144694533762058) internal successors, (471), 317 states have internal predecessors, (471), 65 states have call successors, (65), 24 states have call predecessors, (65), 27 states have return successors, (72), 64 states have call predecessors, (72), 64 states have call successors, (72) [2021-12-22 11:26:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 608 transitions. [2021-12-22 11:26:46,104 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 608 transitions. Word has length 156 [2021-12-22 11:26:46,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:46,104 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 608 transitions. [2021-12-22 11:26:46,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.875) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-22 11:26:46,105 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 608 transitions. [2021-12-22 11:26:46,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 11:26:46,107 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:46,107 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:46,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 11:26:46,108 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:46,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:46,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1315725003, now seen corresponding path program 1 times [2021-12-22 11:26:46,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:46,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429834512] [2021-12-22 11:26:46,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:46,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:46,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 11:26:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 11:26:46,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:26:46,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 11:26:46,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 11:26:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 11:26:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 11:26:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 11:26:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 11:26:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:26:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 11:26:46,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 11:26:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 11:26:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:46,260 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-22 11:26:46,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:46,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429834512] [2021-12-22 11:26:46,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429834512] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:46,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:46,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 11:26:46,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235763637] [2021-12-22 11:26:46,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:46,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 11:26:46,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:46,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 11:26:46,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-22 11:26:46,262 INFO L87 Difference]: Start difference. First operand 404 states and 608 transitions. Second operand has 12 states, 11 states have (on average 9.0) internal successors, (99), 8 states have internal predecessors, (99), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-22 11:26:48,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:48,255 INFO L93 Difference]: Finished difference Result 898 states and 1354 transitions. [2021-12-22 11:26:48,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 11:26:48,256 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.0) internal successors, (99), 8 states have internal predecessors, (99), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 157 [2021-12-22 11:26:48,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:48,259 INFO L225 Difference]: With dead ends: 898 [2021-12-22 11:26:48,259 INFO L226 Difference]: Without dead ends: 521 [2021-12-22 11:26:48,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-22 11:26:48,261 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 1354 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 3029 mSolverCounterSat, 491 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 2082 SdHoareTripleChecker+Invalid, 3520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 491 IncrementalHoareTripleChecker+Valid, 3029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:48,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1354 Valid, 2082 Invalid, 3520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [491 Valid, 3029 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-22 11:26:48,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2021-12-22 11:26:48,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 404. [2021-12-22 11:26:48,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 311 states have (on average 1.5144694533762058) internal successors, (471), 317 states have internal predecessors, (471), 65 states have call successors, (65), 24 states have call predecessors, (65), 27 states have return successors, (71), 64 states have call predecessors, (71), 64 states have call successors, (71) [2021-12-22 11:26:48,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 607 transitions. [2021-12-22 11:26:48,286 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 607 transitions. Word has length 157 [2021-12-22 11:26:48,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:48,287 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 607 transitions. [2021-12-22 11:26:48,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.0) internal successors, (99), 8 states have internal predecessors, (99), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-22 11:26:48,287 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 607 transitions. [2021-12-22 11:26:48,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-22 11:26:48,289 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:48,290 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:48,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 11:26:48,290 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:48,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:48,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2088351611, now seen corresponding path program 2 times [2021-12-22 11:26:48,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:48,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346866121] [2021-12-22 11:26:48,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:48,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:48,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:48,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 11:26:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:26:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 11:26:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 11:26:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 11:26:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 11:26:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 11:26:48,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 11:26:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 11:26:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:26:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-22 11:26:48,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-22 11:26:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-22 11:26:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:48,433 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-22 11:26:48,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:48,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346866121] [2021-12-22 11:26:48,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346866121] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:48,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:48,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 11:26:48,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379998727] [2021-12-22 11:26:48,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:48,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 11:26:48,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:48,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 11:26:48,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-22 11:26:48,435 INFO L87 Difference]: Start difference. First operand 404 states and 607 transitions. Second operand has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-22 11:26:50,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:50,328 INFO L93 Difference]: Finished difference Result 900 states and 1360 transitions. [2021-12-22 11:26:50,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 11:26:50,329 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 158 [2021-12-22 11:26:50,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:50,332 INFO L225 Difference]: With dead ends: 900 [2021-12-22 11:26:50,333 INFO L226 Difference]: Without dead ends: 523 [2021-12-22 11:26:50,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2021-12-22 11:26:50,345 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 1370 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 3021 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 2055 SdHoareTripleChecker+Invalid, 3518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 3021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:50,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1370 Valid, 2055 Invalid, 3518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 3021 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-22 11:26:50,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-12-22 11:26:50,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 406. [2021-12-22 11:26:50,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 312 states have (on average 1.5128205128205128) internal successors, (472), 319 states have internal predecessors, (472), 65 states have call successors, (65), 24 states have call predecessors, (65), 28 states have return successors, (76), 64 states have call predecessors, (76), 64 states have call successors, (76) [2021-12-22 11:26:50,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 613 transitions. [2021-12-22 11:26:50,373 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 613 transitions. Word has length 158 [2021-12-22 11:26:50,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:50,373 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 613 transitions. [2021-12-22 11:26:50,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 9.090909090909092) internal successors, (100), 8 states have internal predecessors, (100), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2021-12-22 11:26:50,374 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 613 transitions. [2021-12-22 11:26:50,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-22 11:26:50,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:50,376 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:50,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 11:26:50,377 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:50,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:50,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1860664624, now seen corresponding path program 1 times [2021-12-22 11:26:50,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:50,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001990063] [2021-12-22 11:26:50,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:50,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:50,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:50,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:50,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 11:26:50,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 11:26:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 11:26:50,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:26:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 11:26:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 11:26:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 11:26:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 11:26:50,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 11:26:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:26:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-22 11:26:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-22 11:26:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 11:26:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,520 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-22 11:26:50,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:50,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001990063] [2021-12-22 11:26:50,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001990063] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:26:50,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472843239] [2021-12-22 11:26:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:50,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:50,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:26:50,524 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) [2021-12-22 11:26:50,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 11:26:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:50,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 1260 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 11:26:50,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:26:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 11:26:51,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 11:26:51,277 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 11:26:51,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472843239] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 11:26:51,277 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 11:26:51,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-22 11:26:51,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294145937] [2021-12-22 11:26:51,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 11:26:51,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 11:26:51,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:51,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 11:26:51,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-22 11:26:51,280 INFO L87 Difference]: Start difference. First operand 406 states and 613 transitions. Second operand has 15 states, 14 states have (on average 11.714285714285714) internal successors, (164), 11 states have internal predecessors, (164), 4 states have call successors, (43), 6 states have call predecessors, (43), 3 states have return successors, (36), 3 states have call predecessors, (36), 4 states have call successors, (36) [2021-12-22 11:26:54,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:54,077 INFO L93 Difference]: Finished difference Result 1579 states and 2588 transitions. [2021-12-22 11:26:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 11:26:54,078 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 11.714285714285714) internal successors, (164), 11 states have internal predecessors, (164), 4 states have call successors, (43), 6 states have call predecessors, (43), 3 states have return successors, (36), 3 states have call predecessors, (36), 4 states have call successors, (36) Word has length 159 [2021-12-22 11:26:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:54,085 INFO L225 Difference]: With dead ends: 1579 [2021-12-22 11:26:54,085 INFO L226 Difference]: Without dead ends: 1204 [2021-12-22 11:26:54,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-22 11:26:54,088 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 3244 mSDsluCounter, 2826 mSDsCounter, 0 mSdLazyCounter, 3838 mSolverCounterSat, 1213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3246 SdHoareTripleChecker+Valid, 3485 SdHoareTripleChecker+Invalid, 5051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1213 IncrementalHoareTripleChecker+Valid, 3838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:54,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3246 Valid, 3485 Invalid, 5051 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1213 Valid, 3838 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-22 11:26:54,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1204 states. [2021-12-22 11:26:54,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1204 to 734. [2021-12-22 11:26:54,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 576 states have (on average 1.5677083333333333) internal successors, (903), 583 states have internal predecessors, (903), 129 states have call successors, (129), 24 states have call predecessors, (129), 28 states have return successors, (150), 128 states have call predecessors, (150), 128 states have call successors, (150) [2021-12-22 11:26:54,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1182 transitions. [2021-12-22 11:26:54,147 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1182 transitions. Word has length 159 [2021-12-22 11:26:54,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:54,148 INFO L470 AbstractCegarLoop]: Abstraction has 734 states and 1182 transitions. [2021-12-22 11:26:54,148 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 11.714285714285714) internal successors, (164), 11 states have internal predecessors, (164), 4 states have call successors, (43), 6 states have call predecessors, (43), 3 states have return successors, (36), 3 states have call predecessors, (36), 4 states have call successors, (36) [2021-12-22 11:26:54,148 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1182 transitions. [2021-12-22 11:26:54,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-22 11:26:54,153 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:54,153 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:54,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 11:26:54,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:26:54,368 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:54,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:54,368 INFO L85 PathProgramCache]: Analyzing trace with hash -270541918, now seen corresponding path program 1 times [2021-12-22 11:26:54,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:54,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602943498] [2021-12-22 11:26:54,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:54,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:54,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:54,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 11:26:54,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 11:26:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 11:26:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 11:26:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 11:26:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 11:26:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 11:26:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 11:26:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 11:26:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:26:54,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 11:26:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-22 11:26:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-22 11:26:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:54,489 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 11:26:54,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:54,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602943498] [2021-12-22 11:26:54,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602943498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:54,490 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:54,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:26:54,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274120484] [2021-12-22 11:26:54,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:54,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:26:54,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:54,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:26:54,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:26:54,492 INFO L87 Difference]: Start difference. First operand 734 states and 1182 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:26:55,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:55,543 INFO L93 Difference]: Finished difference Result 1815 states and 2991 transitions. [2021-12-22 11:26:55,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:26:55,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 162 [2021-12-22 11:26:55,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:55,550 INFO L225 Difference]: With dead ends: 1815 [2021-12-22 11:26:55,550 INFO L226 Difference]: Without dead ends: 1159 [2021-12-22 11:26:55,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-22 11:26:55,553 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 1308 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1323 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:55,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1323 Valid, 1371 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:26:55,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2021-12-22 11:26:55,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1034. [2021-12-22 11:26:55,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 812 states have (on average 1.5862068965517242) internal successors, (1288), 819 states have internal predecessors, (1288), 193 states have call successors, (193), 24 states have call predecessors, (193), 28 states have return successors, (224), 192 states have call predecessors, (224), 192 states have call successors, (224) [2021-12-22 11:26:55,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1705 transitions. [2021-12-22 11:26:55,624 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1705 transitions. Word has length 162 [2021-12-22 11:26:55,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:55,625 INFO L470 AbstractCegarLoop]: Abstraction has 1034 states and 1705 transitions. [2021-12-22 11:26:55,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:26:55,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1705 transitions. [2021-12-22 11:26:55,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-22 11:26:55,632 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:55,632 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:55,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 11:26:55,632 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:55,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:55,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1004228204, now seen corresponding path program 1 times [2021-12-22 11:26:55,633 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:55,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213066502] [2021-12-22 11:26:55,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:55,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:55,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:26:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 11:26:55,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 11:26:55,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 11:26:55,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 11:26:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 11:26:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 11:26:55,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 11:26:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 11:26:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:26:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 11:26:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 11:26:55,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-22 11:26:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:55,778 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 11:26:55,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:55,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213066502] [2021-12-22 11:26:55,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213066502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:55,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:55,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:26:55,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720600294] [2021-12-22 11:26:55,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:55,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:26:55,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:55,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:26:55,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:26:55,781 INFO L87 Difference]: Start difference. First operand 1034 states and 1705 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:26:56,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:56,829 INFO L93 Difference]: Finished difference Result 2555 states and 4271 transitions. [2021-12-22 11:26:56,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:26:56,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 163 [2021-12-22 11:26:56,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:56,839 INFO L225 Difference]: With dead ends: 2555 [2021-12-22 11:26:56,839 INFO L226 Difference]: Without dead ends: 1652 [2021-12-22 11:26:56,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-22 11:26:56,843 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1291 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 501 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 501 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:56,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1306 Valid, 1306 Invalid, 1321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [501 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:26:56,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1652 states. [2021-12-22 11:26:56,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1652 to 1527. [2021-12-22 11:26:56,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1210 states have (on average 1.5950413223140496) internal successors, (1930), 1217 states have internal predecessors, (1930), 288 states have call successors, (288), 24 states have call predecessors, (288), 28 states have return successors, (319), 287 states have call predecessors, (319), 287 states have call successors, (319) [2021-12-22 11:26:56,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2537 transitions. [2021-12-22 11:26:56,945 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2537 transitions. Word has length 163 [2021-12-22 11:26:56,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:56,946 INFO L470 AbstractCegarLoop]: Abstraction has 1527 states and 2537 transitions. [2021-12-22 11:26:56,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:26:56,946 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2537 transitions. [2021-12-22 11:26:56,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-22 11:26:56,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:56,968 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:56,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 11:26:56,968 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:56,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:56,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1179785900, now seen corresponding path program 1 times [2021-12-22 11:26:56,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:56,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181535743] [2021-12-22 11:26:56,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:56,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:57,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:57,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 11:26:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:26:57,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 11:26:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 11:26:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 11:26:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 11:26:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 11:26:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 11:26:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 11:26:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:26:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 11:26:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-22 11:26:57,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-22 11:26:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:57,107 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 11:26:57,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:57,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181535743] [2021-12-22 11:26:57,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181535743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:57,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:57,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:26:57,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312943582] [2021-12-22 11:26:57,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:57,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:26:57,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:57,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:26:57,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:26:57,110 INFO L87 Difference]: Start difference. First operand 1527 states and 2537 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:26:58,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:58,217 INFO L93 Difference]: Finished difference Result 3657 states and 6189 transitions. [2021-12-22 11:26:58,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:26:58,218 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 164 [2021-12-22 11:26:58,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:58,229 INFO L225 Difference]: With dead ends: 3657 [2021-12-22 11:26:58,230 INFO L226 Difference]: Without dead ends: 2396 [2021-12-22 11:26:58,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-22 11:26:58,234 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 1292 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 494 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 494 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:58,235 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1307 Valid, 1306 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [494 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:26:58,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2396 states. [2021-12-22 11:26:58,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2396 to 2271. [2021-12-22 11:26:58,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2271 states, 1831 states have (on average 1.6018569087930092) internal successors, (2933), 1838 states have internal predecessors, (2933), 411 states have call successors, (411), 24 states have call predecessors, (411), 28 states have return successors, (458), 410 states have call predecessors, (458), 410 states have call successors, (458) [2021-12-22 11:26:58,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2271 states to 2271 states and 3802 transitions. [2021-12-22 11:26:58,403 INFO L78 Accepts]: Start accepts. Automaton has 2271 states and 3802 transitions. Word has length 164 [2021-12-22 11:26:58,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:58,403 INFO L470 AbstractCegarLoop]: Abstraction has 2271 states and 3802 transitions. [2021-12-22 11:26:58,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:26:58,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2271 states and 3802 transitions. [2021-12-22 11:26:58,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-22 11:26:58,416 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:58,416 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:58,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 11:26:58,417 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:58,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:58,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1733730451, now seen corresponding path program 1 times [2021-12-22 11:26:58,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:58,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230046997] [2021-12-22 11:26:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:58,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 11:26:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:26:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 11:26:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 11:26:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 11:26:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 11:26:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 11:26:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 11:26:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 11:26:58,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:26:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-22 11:26:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 11:26:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-22 11:26:58,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 11:26:58,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:26:58,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230046997] [2021-12-22 11:26:58,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230046997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:26:58,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:26:58,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:26:58,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708509832] [2021-12-22 11:26:58,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:26:58,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:26:58,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:26:58,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:26:58,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:26:58,524 INFO L87 Difference]: Start difference. First operand 2271 states and 3802 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:26:59,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:26:59,585 INFO L93 Difference]: Finished difference Result 5366 states and 9169 transitions. [2021-12-22 11:26:59,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:26:59,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 165 [2021-12-22 11:26:59,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:26:59,603 INFO L225 Difference]: With dead ends: 5366 [2021-12-22 11:26:59,604 INFO L226 Difference]: Without dead ends: 3580 [2021-12-22 11:26:59,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-22 11:26:59,611 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 1386 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:26:59,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1401 Valid, 1260 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 11:26:59,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3580 states. [2021-12-22 11:26:59,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3580 to 3455. [2021-12-22 11:26:59,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3455 states, 2836 states have (on average 1.6061354019746121) internal successors, (4555), 2843 states have internal predecessors, (4555), 590 states have call successors, (590), 24 states have call predecessors, (590), 28 states have return successors, (663), 589 states have call predecessors, (663), 589 states have call successors, (663) [2021-12-22 11:26:59,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3455 states to 3455 states and 5808 transitions. [2021-12-22 11:26:59,862 INFO L78 Accepts]: Start accepts. Automaton has 3455 states and 5808 transitions. Word has length 165 [2021-12-22 11:26:59,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:26:59,863 INFO L470 AbstractCegarLoop]: Abstraction has 3455 states and 5808 transitions. [2021-12-22 11:26:59,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:26:59,863 INFO L276 IsEmpty]: Start isEmpty. Operand 3455 states and 5808 transitions. [2021-12-22 11:26:59,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-22 11:26:59,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:26:59,880 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:26:59,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 11:26:59,881 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:26:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:26:59,881 INFO L85 PathProgramCache]: Analyzing trace with hash -461361512, now seen corresponding path program 1 times [2021-12-22 11:26:59,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:26:59,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525582085] [2021-12-22 11:26:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:26:59,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:26:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:26:59,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:26:59,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:26:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:26:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:26:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:26:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 11:26:59,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:26:59,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 11:26:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 11:26:59,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:26:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 11:26:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 11:26:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 11:26:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 11:26:59,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:26:59,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:26:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:00,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-22 11:27:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:00,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-22 11:27:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:00,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-22 11:27:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:00,012 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 11:27:00,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:00,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525582085] [2021-12-22 11:27:00,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525582085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:00,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:00,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:00,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321971493] [2021-12-22 11:27:00,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:00,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:00,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:00,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:00,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:00,016 INFO L87 Difference]: Start difference. First operand 3455 states and 5808 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:27:01,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:01,239 INFO L93 Difference]: Finished difference Result 8439 states and 14485 transitions. [2021-12-22 11:27:01,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:01,240 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 166 [2021-12-22 11:27:01,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:01,267 INFO L225 Difference]: With dead ends: 8439 [2021-12-22 11:27:01,268 INFO L226 Difference]: Without dead ends: 5721 [2021-12-22 11:27:01,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-22 11:27:01,277 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 1340 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 816 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 1349 SdHoareTripleChecker+Invalid, 1313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 816 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:01,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1355 Valid, 1349 Invalid, 1313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 816 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:27:01,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5721 states. [2021-12-22 11:27:01,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5721 to 5596. [2021-12-22 11:27:01,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5596 states, 4601 states have (on average 1.5998695935666158) internal successors, (7361), 4608 states have internal predecessors, (7361), 966 states have call successors, (966), 24 states have call predecessors, (966), 28 states have return successors, (1083), 965 states have call predecessors, (1083), 965 states have call successors, (1083) [2021-12-22 11:27:01,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5596 states to 5596 states and 9410 transitions. [2021-12-22 11:27:01,730 INFO L78 Accepts]: Start accepts. Automaton has 5596 states and 9410 transitions. Word has length 166 [2021-12-22 11:27:01,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:01,730 INFO L470 AbstractCegarLoop]: Abstraction has 5596 states and 9410 transitions. [2021-12-22 11:27:01,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:27:01,731 INFO L276 IsEmpty]: Start isEmpty. Operand 5596 states and 9410 transitions. [2021-12-22 11:27:01,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-22 11:27:01,757 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:01,757 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:27:01,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 11:27:01,758 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:01,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:01,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1527135409, now seen corresponding path program 1 times [2021-12-22 11:27:01,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:01,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492971723] [2021-12-22 11:27:01,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:01,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 11:27:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 11:27:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:27:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 11:27:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 11:27:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 11:27:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 11:27:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 11:27:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 11:27:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-22 11:27:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-22 11:27:01,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-22 11:27:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:01,869 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 11:27:01,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:01,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492971723] [2021-12-22 11:27:01,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492971723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:01,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:01,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:01,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136355828] [2021-12-22 11:27:01,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:01,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:01,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:01,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:01,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:01,872 INFO L87 Difference]: Start difference. First operand 5596 states and 9410 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:27:03,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:03,293 INFO L93 Difference]: Finished difference Result 13861 states and 23786 transitions. [2021-12-22 11:27:03,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:03,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 167 [2021-12-22 11:27:03,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:03,345 INFO L225 Difference]: With dead ends: 13861 [2021-12-22 11:27:03,346 INFO L226 Difference]: Without dead ends: 9404 [2021-12-22 11:27:03,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-22 11:27:03,359 INFO L933 BasicCegarLoop]: 589 mSDtfsCounter, 1257 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 834 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 1330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 834 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:03,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1272 Valid, 1317 Invalid, 1330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 834 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:27:03,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9404 states. [2021-12-22 11:27:04,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9404 to 9279. [2021-12-22 11:27:04,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9279 states, 7678 states have (on average 1.5978119301901537) internal successors, (12268), 7685 states have internal predecessors, (12268), 1572 states have call successors, (1572), 24 states have call predecessors, (1572), 28 states have return successors, (1767), 1571 states have call predecessors, (1767), 1571 states have call successors, (1767) [2021-12-22 11:27:04,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9279 states to 9279 states and 15607 transitions. [2021-12-22 11:27:04,061 INFO L78 Accepts]: Start accepts. Automaton has 9279 states and 15607 transitions. Word has length 167 [2021-12-22 11:27:04,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:04,061 INFO L470 AbstractCegarLoop]: Abstraction has 9279 states and 15607 transitions. [2021-12-22 11:27:04,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:27:04,062 INFO L276 IsEmpty]: Start isEmpty. Operand 9279 states and 15607 transitions. [2021-12-22 11:27:04,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-22 11:27:04,102 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:04,102 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:27:04,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 11:27:04,103 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:04,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:04,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1737547222, now seen corresponding path program 1 times [2021-12-22 11:27:04,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:04,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856127771] [2021-12-22 11:27:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:04,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:04,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 11:27:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 11:27:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 11:27:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 11:27:04,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 11:27:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 11:27:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 11:27:04,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-22 11:27:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 11:27:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:04,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-22 11:27:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-22 11:27:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 11:27:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 11:27:04,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:04,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856127771] [2021-12-22 11:27:04,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856127771] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:04,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:04,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:04,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071215215] [2021-12-22 11:27:04,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:04,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:04,281 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:04,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:04,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:04,282 INFO L87 Difference]: Start difference. First operand 9279 states and 15607 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:27:05,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:05,812 INFO L93 Difference]: Finished difference Result 24045 states and 41227 transitions. [2021-12-22 11:27:05,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:05,813 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2021-12-22 11:27:05,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:05,875 INFO L225 Difference]: With dead ends: 24045 [2021-12-22 11:27:05,875 INFO L226 Difference]: Without dead ends: 16357 [2021-12-22 11:27:05,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-22 11:27:05,903 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 1362 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:05,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1377 Valid, 1310 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 11:27:05,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16357 states. [2021-12-22 11:27:06,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16357 to 16232. [2021-12-22 11:27:07,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16232 states, 13428 states have (on average 1.589067619898719) internal successors, (21338), 13435 states have internal predecessors, (21338), 2775 states have call successors, (2775), 24 states have call predecessors, (2775), 28 states have return successors, (3114), 2774 states have call predecessors, (3114), 2774 states have call successors, (3114) [2021-12-22 11:27:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16232 states to 16232 states and 27227 transitions. [2021-12-22 11:27:07,059 INFO L78 Accepts]: Start accepts. Automaton has 16232 states and 27227 transitions. Word has length 168 [2021-12-22 11:27:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:07,060 INFO L470 AbstractCegarLoop]: Abstraction has 16232 states and 27227 transitions. [2021-12-22 11:27:07,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:27:07,060 INFO L276 IsEmpty]: Start isEmpty. Operand 16232 states and 27227 transitions. [2021-12-22 11:27:07,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-22 11:27:07,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:07,110 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:27:07,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 11:27:07,111 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:07,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:07,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1040310958, now seen corresponding path program 1 times [2021-12-22 11:27:07,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:07,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089973051] [2021-12-22 11:27:07,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:07,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:07,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:07,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:27:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-22 11:27:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 11:27:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 11:27:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 11:27:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 11:27:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 11:27:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-22 11:27:07,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 11:27:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-22 11:27:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-22 11:27:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-22 11:27:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,227 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 11:27:07,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:07,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089973051] [2021-12-22 11:27:07,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089973051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:07,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:07,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:07,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559272108] [2021-12-22 11:27:07,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:07,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:07,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:07,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:07,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:07,230 INFO L87 Difference]: Start difference. First operand 16232 states and 27227 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:27:09,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:09,317 INFO L93 Difference]: Finished difference Result 43011 states and 73624 transitions. [2021-12-22 11:27:09,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:09,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 169 [2021-12-22 11:27:09,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:09,446 INFO L225 Difference]: With dead ends: 43011 [2021-12-22 11:27:09,447 INFO L226 Difference]: Without dead ends: 29012 [2021-12-22 11:27:09,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-22 11:27:09,489 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1283 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 507 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1298 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:09,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1298 Valid, 1305 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [507 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 11:27:09,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29012 states. [2021-12-22 11:27:11,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29012 to 28887. [2021-12-22 11:27:11,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28887 states, 24044 states have (on average 1.5848028614207286) internal successors, (38105), 24051 states have internal predecessors, (38105), 4814 states have call successors, (4814), 24 states have call predecessors, (4814), 28 states have return successors, (5427), 4813 states have call predecessors, (5427), 4813 states have call successors, (5427) [2021-12-22 11:27:11,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28887 states to 28887 states and 48346 transitions. [2021-12-22 11:27:11,347 INFO L78 Accepts]: Start accepts. Automaton has 28887 states and 48346 transitions. Word has length 169 [2021-12-22 11:27:11,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:11,348 INFO L470 AbstractCegarLoop]: Abstraction has 28887 states and 48346 transitions. [2021-12-22 11:27:11,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:27:11,348 INFO L276 IsEmpty]: Start isEmpty. Operand 28887 states and 48346 transitions. [2021-12-22 11:27:11,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-22 11:27:11,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:11,415 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:27:11,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 11:27:11,415 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:11,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:11,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1068101452, now seen corresponding path program 1 times [2021-12-22 11:27:11,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:11,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474275984] [2021-12-22 11:27:11,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:11,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:27:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 11:27:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 11:27:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 11:27:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 11:27:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 11:27:11,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 11:27:11,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 11:27:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-22 11:27:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:11,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 11:27:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-22 11:27:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-22 11:27:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,526 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 11:27:11,526 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:11,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474275984] [2021-12-22 11:27:11,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474275984] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:11,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:11,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:11,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259526284] [2021-12-22 11:27:11,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:11,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:11,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:11,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:11,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:11,529 INFO L87 Difference]: Start difference. First operand 28887 states and 48346 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:27:14,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:14,864 INFO L93 Difference]: Finished difference Result 78773 states and 133988 transitions. [2021-12-22 11:27:14,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:14,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 170 [2021-12-22 11:27:14,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:15,102 INFO L225 Difference]: With dead ends: 78773 [2021-12-22 11:27:15,103 INFO L226 Difference]: Without dead ends: 52891 [2021-12-22 11:27:15,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-22 11:27:15,201 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 1274 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1289 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:15,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1289 Valid, 1311 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:27:15,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52891 states. [2021-12-22 11:27:18,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52891 to 52766. [2021-12-22 11:27:18,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52766 states, 44208 states have (on average 1.579080709373869) internal successors, (69808), 44215 states have internal predecessors, (69808), 8529 states have call successors, (8529), 24 states have call predecessors, (8529), 28 states have return successors, (9674), 8528 states have call predecessors, (9674), 8528 states have call successors, (9674) [2021-12-22 11:27:18,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52766 states to 52766 states and 88011 transitions. [2021-12-22 11:27:18,598 INFO L78 Accepts]: Start accepts. Automaton has 52766 states and 88011 transitions. Word has length 170 [2021-12-22 11:27:18,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:18,599 INFO L470 AbstractCegarLoop]: Abstraction has 52766 states and 88011 transitions. [2021-12-22 11:27:18,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:27:18,599 INFO L276 IsEmpty]: Start isEmpty. Operand 52766 states and 88011 transitions. [2021-12-22 11:27:18,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-22 11:27:18,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:18,717 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:27:18,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 11:27:18,717 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:18,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:18,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1579294450, now seen corresponding path program 1 times [2021-12-22 11:27:18,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:18,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497789303] [2021-12-22 11:27:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:18,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:18,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:18,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:18,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:27:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 11:27:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 11:27:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 11:27:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 11:27:18,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 11:27:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 11:27:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 11:27:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 11:27:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-22 11:27:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-22 11:27:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-22 11:27:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,839 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-22 11:27:18,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:18,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497789303] [2021-12-22 11:27:18,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497789303] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:18,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:18,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:18,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154490870] [2021-12-22 11:27:18,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:18,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:18,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:18,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:18,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:18,842 INFO L87 Difference]: Start difference. First operand 52766 states and 88011 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-22 11:27:23,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:23,754 INFO L93 Difference]: Finished difference Result 98544 states and 167918 transitions. [2021-12-22 11:27:23,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:23,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 171 [2021-12-22 11:27:23,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:24,278 INFO L225 Difference]: With dead ends: 98544 [2021-12-22 11:27:24,278 INFO L226 Difference]: Without dead ends: 98350 [2021-12-22 11:27:24,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-12-22 11:27:24,329 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 1342 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 805 mSolverCounterSat, 518 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1357 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 518 IncrementalHoareTripleChecker+Valid, 805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:24,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1357 Valid, 1282 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [518 Valid, 805 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:27:24,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98350 states.