./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec27_product33.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_product33.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 3f09e5adfeee9c308429dc6a96730836c8dd32d7c1bd2833eb57924261e76e35 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 11:27:02,285 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:27:02,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:27:02,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:27:02,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:27:02,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:27:02,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:27:02,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:27:02,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:27:02,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:27:02,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:27:02,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:27:02,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:27:02,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:27:02,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:27:02,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:27:02,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:27:02,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:27:02,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:27:02,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:27:02,381 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:27:02,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:27:02,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:27:02,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:27:02,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:27:02,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:27:02,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:27:02,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:27:02,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:27:02,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:27:02,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:27:02,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:27:02,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:27:02,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:27:02,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:27:02,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:27:02,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:27:02,393 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:27:02,393 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:27:02,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:27:02,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:27:02,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:27:02,418 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:27:02,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:27:02,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:27:02,419 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:27:02,419 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:27:02,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:27:02,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:27:02,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:27:02,420 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:27:02,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:27:02,421 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:27:02,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:27:02,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:27:02,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:27:02,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:27:02,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:27:02,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:27:02,422 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:27:02,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:27:02,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:27:02,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:27:02,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:27:02,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:27:02,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:27:02,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:27:02,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:27:02,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:27:02,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:27:02,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:27:02,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:27:02,425 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:27:02,425 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:27:02,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:27:02,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:27:02,426 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f09e5adfeee9c308429dc6a96730836c8dd32d7c1bd2833eb57924261e76e35 [2021-12-22 11:27:02,590 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:27:02,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:27:02,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:27:02,608 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:27:02,609 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:27:02,610 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec27_product33.cil.c [2021-12-22 11:27:02,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/859339895/49aaecf0a28d48b5927b5ff2920aaedd/FLAGa4c9442c6 [2021-12-22 11:27:03,086 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:27:03,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec27_product33.cil.c [2021-12-22 11:27:03,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/859339895/49aaecf0a28d48b5927b5ff2920aaedd/FLAGa4c9442c6 [2021-12-22 11:27:03,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/859339895/49aaecf0a28d48b5927b5ff2920aaedd [2021-12-22 11:27:03,122 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:27:03,124 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:27:03,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:27:03,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:27:03,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:27:03,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:27:03" (1/1) ... [2021-12-22 11:27:03,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b77a23e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:27:03, skipping insertion in model container [2021-12-22 11:27:03,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:27:03" (1/1) ... [2021-12-22 11:27:03,135 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:27:03,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:27:03,310 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_product33.cil.c[1543,1556] [2021-12-22 11:27:03,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:27:03,610 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:27:03,619 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_product33.cil.c[1543,1556] [2021-12-22 11:27:03,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:27:03,731 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:27:03,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:27:03 WrapperNode [2021-12-22 11:27:03,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:27:03,733 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:27:03,733 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:27:03,734 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:27:03,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:27:03" (1/1) ... [2021-12-22 11:27:03,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:27:03" (1/1) ... [2021-12-22 11:27:03,818 INFO L137 Inliner]: procedures = 134, calls = 229, calls flagged for inlining = 64, calls inlined = 59, statements flattened = 1062 [2021-12-22 11:27:03,819 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:27:03,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:27:03,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:27:03,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:27:03,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:27:03" (1/1) ... [2021-12-22 11:27:03,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:27:03" (1/1) ... [2021-12-22 11:27:03,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:27:03" (1/1) ... [2021-12-22 11:27:03,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:27:03" (1/1) ... [2021-12-22 11:27:03,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:27:03" (1/1) ... [2021-12-22 11:27:03,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:27:03" (1/1) ... [2021-12-22 11:27:03,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:27:03" (1/1) ... [2021-12-22 11:27:03,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:27:03,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:27:03,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:27:03,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:27:03,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:27:03" (1/1) ... [2021-12-22 11:27:03,883 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:27:03,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:27:03,916 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 11:27:03,933 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 11:27:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-22 11:27:03,943 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-22 11:27:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-22 11:27:03,943 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-22 11:27:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-22 11:27:03,943 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-22 11:27:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-22 11:27:03,944 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-22 11:27:03,944 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-22 11:27:03,944 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-22 11:27:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-22 11:27:03,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-22 11:27:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-22 11:27:03,945 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-22 11:27:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-22 11:27:03,945 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-22 11:27:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-22 11:27:03,945 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-22 11:27:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-22 11:27:03,946 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-22 11:27:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-22 11:27:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-22 11:27:03,946 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-22 11:27:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2021-12-22 11:27:03,946 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2021-12-22 11:27:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-22 11:27:03,946 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-22 11:27:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:27:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-22 11:27:03,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-22 11:27:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-22 11:27:03,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-22 11:27:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-22 11:27:03,947 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-22 11:27:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-22 11:27:03,948 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-22 11:27:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-22 11:27:03,948 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-22 11:27:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2021-12-22 11:27:03,948 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2021-12-22 11:27:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-22 11:27:03,949 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-22 11:27:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-22 11:27:03,949 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-22 11:27:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-22 11:27:03,949 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-22 11:27:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-22 11:27:03,949 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-22 11:27:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-22 11:27:03,950 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-22 11:27:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:27:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-22 11:27:03,950 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-22 11:27:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:27:03,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:27:04,125 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:27:04,127 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:27:04,686 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:27:04,692 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:27:04,693 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 11:27:04,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:27:04 BoogieIcfgContainer [2021-12-22 11:27:04,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:27:04,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:27:04,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:27:04,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:27:04,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:27:03" (1/3) ... [2021-12-22 11:27:04,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56eb3d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:27:04, skipping insertion in model container [2021-12-22 11:27:04,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:27:03" (2/3) ... [2021-12-22 11:27:04,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56eb3d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:27:04, skipping insertion in model container [2021-12-22 11:27:04,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:27:04" (3/3) ... [2021-12-22 11:27:04,700 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec27_product33.cil.c [2021-12-22 11:27:04,703 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:27:04,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:27:04,734 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:27:04,739 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 11:27:04,739 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:27:04,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 394 states, 302 states have (on average 1.4966887417218544) internal successors, (452), 306 states have internal predecessors, (452), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) [2021-12-22 11:27:04,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-22 11:27:04,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:04,769 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 11:27:04,770 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:04,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:04,774 INFO L85 PathProgramCache]: Analyzing trace with hash -86857885, now seen corresponding path program 1 times [2021-12-22 11:27:04,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:04,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272544408] [2021-12-22 11:27:04,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:04,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:04,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:27:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:27:05,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:27:05,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 11:27:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 11:27:05,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 11:27:05,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 11:27:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:27:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:27:05,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 11:27:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 11:27:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 11:27:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 11:27:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 11:27:05,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 11:27:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,250 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 11:27:05,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:05,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272544408] [2021-12-22 11:27:05,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272544408] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:27:05,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004701484] [2021-12-22 11:27:05,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:05,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:27:05,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:27:05,254 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 11:27:05,257 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 11:27:05,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:05,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 11:27:05,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:27:05,733 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 11:27:05,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:27:05,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004701484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:05,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:27:05,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-22 11:27:05,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112443666] [2021-12-22 11:27:05,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:05,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 11:27:05,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:05,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 11:27:05,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:27:05,761 INFO L87 Difference]: Start difference. First operand has 394 states, 302 states have (on average 1.4966887417218544) internal successors, (452), 306 states have internal predecessors, (452), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (65), 65 states have call predecessors, (65), 65 states have call successors, (65) 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 11:27:05,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:05,818 INFO L93 Difference]: Finished difference Result 629 states and 910 transitions. [2021-12-22 11:27:05,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 11:27:05,820 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 11:27:05,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:05,838 INFO L225 Difference]: With dead ends: 629 [2021-12-22 11:27:05,838 INFO L226 Difference]: Without dead ends: 387 [2021-12-22 11:27:05,842 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 11:27:05,844 INFO L933 BasicCegarLoop]: 578 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, 578 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 11:27:05,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:27:05,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-12-22 11:27:05,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2021-12-22 11:27:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 296 states have (on average 1.489864864864865) internal successors, (441), 299 states have internal predecessors, (441), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-12-22 11:27:05,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 570 transitions. [2021-12-22 11:27:05,910 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 570 transitions. Word has length 142 [2021-12-22 11:27:05,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:05,911 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 570 transitions. [2021-12-22 11:27:05,912 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 11:27:05,912 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 570 transitions. [2021-12-22 11:27:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-22 11:27:05,915 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:05,915 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 11:27:05,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 11:27:06,133 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 11:27:06,134 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:06,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:06,135 INFO L85 PathProgramCache]: Analyzing trace with hash -243071728, now seen corresponding path program 1 times [2021-12-22 11:27:06,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:06,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474017248] [2021-12-22 11:27:06,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:06,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:06,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:27:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:27:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:27:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 11:27:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 11:27:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 11:27:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 11:27:06,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:27:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 11:27:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 11:27:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:27:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 11:27:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 11:27:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 11:27:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-22 11:27:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,342 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 11:27:06,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:06,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474017248] [2021-12-22 11:27:06,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474017248] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:27:06,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609595859] [2021-12-22 11:27:06,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:06,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:27:06,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:27:06,348 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 11:27:06,380 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 11:27:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:06,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 11:27:06,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:27:06,809 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 11:27:06,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:27:06,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609595859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:06,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:27:06,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-22 11:27:06,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761082870] [2021-12-22 11:27:06,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:06,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:27:06,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:06,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:27:06,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:27:06,813 INFO L87 Difference]: Start difference. First operand 387 states and 570 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 11:27:06,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:06,847 INFO L93 Difference]: Finished difference Result 619 states and 891 transitions. [2021-12-22 11:27:06,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:27:06,847 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 11:27:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:06,850 INFO L225 Difference]: With dead ends: 619 [2021-12-22 11:27:06,850 INFO L226 Difference]: Without dead ends: 390 [2021-12-22 11:27:06,852 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 11:27:06,852 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 1 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1134 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 11:27:06,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1134 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:27:06,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-12-22 11:27:06,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 389. [2021-12-22 11:27:06,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 298 states have (on average 1.4865771812080537) internal successors, (443), 301 states have internal predecessors, (443), 65 states have call successors, (65), 25 states have call predecessors, (65), 25 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2021-12-22 11:27:06,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 572 transitions. [2021-12-22 11:27:06,877 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 572 transitions. Word has length 143 [2021-12-22 11:27:06,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:06,878 INFO L470 AbstractCegarLoop]: Abstraction has 389 states and 572 transitions. [2021-12-22 11:27:06,879 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 11:27:06,879 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 572 transitions. [2021-12-22 11:27:06,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-22 11:27:06,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:06,883 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 11:27:06,900 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 11:27:07,092 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 11:27:07,092 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:07,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:07,093 INFO L85 PathProgramCache]: Analyzing trace with hash 502579672, now seen corresponding path program 1 times [2021-12-22 11:27:07,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:07,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593939907] [2021-12-22 11:27:07,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:07,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:27:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:27:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:27:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 11:27:07,208 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 62 [2021-12-22 11:27:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 11:27:07,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-22 11:27:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 11:27:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 11:27:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 11:27:07,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 11:27:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 11:27:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 11:27:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-22 11:27:07,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-22 11:27:07,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,255 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 11:27:07,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:07,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593939907] [2021-12-22 11:27:07,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593939907] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:27:07,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883163388] [2021-12-22 11:27:07,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:07,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:27:07,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:27:07,258 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 11:27:07,259 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 11:27:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:07,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1259 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 11:27:07,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:27:07,652 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 11:27:07,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:27:07,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883163388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:07,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:27:07,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-22 11:27:07,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719126423] [2021-12-22 11:27:07,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:07,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:27:07,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:07,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:27:07,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:27:07,655 INFO L87 Difference]: Start difference. First operand 389 states and 572 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 11:27:07,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:07,695 INFO L93 Difference]: Finished difference Result 813 states and 1211 transitions. [2021-12-22 11:27:07,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:27:07,695 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 11:27:07,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:07,698 INFO L225 Difference]: With dead ends: 813 [2021-12-22 11:27:07,698 INFO L226 Difference]: Without dead ends: 451 [2021-12-22 11:27:07,700 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 11:27:07,700 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 115 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1108 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 11:27:07,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1108 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:27:07,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-12-22 11:27:07,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 443. [2021-12-22 11:27:07,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 341 states have (on average 1.5043988269794721) internal successors, (513), 344 states have internal predecessors, (513), 76 states have call successors, (76), 25 states have call predecessors, (76), 25 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2021-12-22 11:27:07,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 664 transitions. [2021-12-22 11:27:07,739 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 664 transitions. Word has length 152 [2021-12-22 11:27:07,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:07,740 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 664 transitions. [2021-12-22 11:27:07,740 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 11:27:07,740 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 664 transitions. [2021-12-22 11:27:07,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-22 11:27:07,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:07,746 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 11:27:07,768 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 11:27:07,955 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 11:27:07,956 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:07,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:07,956 INFO L85 PathProgramCache]: Analyzing trace with hash 888341411, now seen corresponding path program 1 times [2021-12-22 11:27:07,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:07,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430097141] [2021-12-22 11:27:07,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:07,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:08,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:27:08,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:27:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:27:08,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 11:27:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 11:27:08,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 11:27:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 11:27:08,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:27:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 11:27:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 11:27:08,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 11:27:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 11:27:08,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 11:27:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-22 11:27:08,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-22 11:27:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,108 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 11:27:08,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:08,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430097141] [2021-12-22 11:27:08,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430097141] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:27:08,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765149535] [2021-12-22 11:27:08,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:08,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:27:08,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:27:08,112 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 11:27:08,139 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 11:27:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 11:27:08,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:27:08,538 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 11:27:08,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:27:08,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765149535] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:08,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:27:08,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-22 11:27:08,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295124536] [2021-12-22 11:27:08,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:08,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 11:27:08,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:08,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 11:27:08,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-22 11:27:08,540 INFO L87 Difference]: Start difference. First operand 443 states and 664 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 11:27:08,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:08,585 INFO L93 Difference]: Finished difference Result 877 states and 1318 transitions. [2021-12-22 11:27:08,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 11:27:08,586 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 11:27:08,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:08,588 INFO L225 Difference]: With dead ends: 877 [2021-12-22 11:27:08,588 INFO L226 Difference]: Without dead ends: 445 [2021-12-22 11:27:08,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-22 11:27:08,590 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 133 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2092 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 11:27:08,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 2092 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:27:08,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-12-22 11:27:08,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 445. [2021-12-22 11:27:08,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 342 states have (on average 1.5029239766081872) internal successors, (514), 346 states have internal predecessors, (514), 76 states have call successors, (76), 25 states have call predecessors, (76), 26 states have return successors, (77), 75 states have call predecessors, (77), 75 states have call successors, (77) [2021-12-22 11:27:08,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 667 transitions. [2021-12-22 11:27:08,605 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 667 transitions. Word has length 153 [2021-12-22 11:27:08,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:08,605 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 667 transitions. [2021-12-22 11:27:08,605 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 11:27:08,605 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 667 transitions. [2021-12-22 11:27:08,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-22 11:27:08,607 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:08,607 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 11:27:08,629 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 11:27:08,820 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 11:27:08,820 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:08,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:08,820 INFO L85 PathProgramCache]: Analyzing trace with hash 801418398, now seen corresponding path program 1 times [2021-12-22 11:27:08,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:08,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718105879] [2021-12-22 11:27:08,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:08,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:08,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 11:27:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 11:27:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 11:27:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 11:27:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 11:27:08,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 11:27:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 11:27:08,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 11:27:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 11:27:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 11:27:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 11:27:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 11:27:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 11:27:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-22 11:27:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:08,942 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 11:27:08,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:08,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718105879] [2021-12-22 11:27:08,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718105879] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:27:08,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867673716] [2021-12-22 11:27:08,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:08,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:27:08,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:27:08,944 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 11:27:08,944 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 11:27:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 1267 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 11:27:09,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:27:09,412 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 11:27:09,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:27:09,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867673716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:09,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:27:09,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-22 11:27:09,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459424555] [2021-12-22 11:27:09,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:09,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 11:27:09,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:09,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 11:27:09,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-22 11:27:09,414 INFO L87 Difference]: Start difference. First operand 445 states and 667 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 11:27:09,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:09,463 INFO L93 Difference]: Finished difference Result 879 states and 1323 transitions. [2021-12-22 11:27:09,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 11:27:09,464 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 11:27:09,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:09,466 INFO L225 Difference]: With dead ends: 879 [2021-12-22 11:27:09,466 INFO L226 Difference]: Without dead ends: 447 [2021-12-22 11:27:09,467 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 11:27:09,468 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 132 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2081 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 11:27:09,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 2081 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:27:09,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-22 11:27:09,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2021-12-22 11:27:09,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 343 states have (on average 1.501457725947522) internal successors, (515), 348 states have internal predecessors, (515), 76 states have call successors, (76), 25 states have call predecessors, (76), 27 states have return successors, (82), 75 states have call predecessors, (82), 75 states have call successors, (82) [2021-12-22 11:27:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 673 transitions. [2021-12-22 11:27:09,489 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 673 transitions. Word has length 154 [2021-12-22 11:27:09,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:09,490 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 673 transitions. [2021-12-22 11:27:09,490 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 11:27:09,490 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 673 transitions. [2021-12-22 11:27:09,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-22 11:27:09,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:09,492 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 11:27:09,522 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 11:27:09,719 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 11:27:09,720 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:09,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:09,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1481161214, now seen corresponding path program 1 times [2021-12-22 11:27:09,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:09,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208318938] [2021-12-22 11:27:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:09,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:09,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:09,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:09,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:09,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 11:27:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 11:27:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 11:27:09,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:27:09,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 11:27:09,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 11:27:09,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:27:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 11:27:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 11:27:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 11:27:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 11:27:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 11:27:09,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-22 11:27:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:09,843 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 11:27:09,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:09,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208318938] [2021-12-22 11:27:09,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208318938] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:09,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:09,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 11:27:09,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272375586] [2021-12-22 11:27:09,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:09,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 11:27:09,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:09,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 11:27:09,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:27:09,845 INFO L87 Difference]: Start difference. First operand 447 states and 673 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 11:27:11,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:11,412 INFO L93 Difference]: Finished difference Result 1084 states and 1641 transitions. [2021-12-22 11:27:11,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 11:27:11,412 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 11:27:11,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:11,417 INFO L225 Difference]: With dead ends: 1084 [2021-12-22 11:27:11,417 INFO L226 Difference]: Without dead ends: 660 [2021-12-22 11:27:11,418 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 11:27:11,419 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 1554 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 2093 mSolverCounterSat, 650 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 1828 SdHoareTripleChecker+Invalid, 2743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 650 IncrementalHoareTripleChecker+Valid, 2093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:11,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 1828 Invalid, 2743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [650 Valid, 2093 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 11:27:11,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2021-12-22 11:27:11,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 447. [2021-12-22 11:27:11,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 343 states have (on average 1.501457725947522) internal successors, (515), 348 states have internal predecessors, (515), 76 states have call successors, (76), 25 states have call predecessors, (76), 27 states have return successors, (81), 75 states have call predecessors, (81), 75 states have call successors, (81) [2021-12-22 11:27:11,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 672 transitions. [2021-12-22 11:27:11,453 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 672 transitions. Word has length 155 [2021-12-22 11:27:11,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:11,454 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 672 transitions. [2021-12-22 11:27:11,454 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 11:27:11,454 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 672 transitions. [2021-12-22 11:27:11,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-22 11:27:11,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:11,457 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 11:27:11,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 11:27:11,457 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:11,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:11,457 INFO L85 PathProgramCache]: Analyzing trace with hash -225060517, now seen corresponding path program 2 times [2021-12-22 11:27:11,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:11,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951443105] [2021-12-22 11:27:11,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:11,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [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 18 [2021-12-22 11:27:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 11:27:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 11:27:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 11:27:11,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:27:11,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 11:27:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 11:27:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 11:27:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 11:27:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 11:27:11,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 11:27:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-22 11:27:11,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 11:27:11,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-22 11:27:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:11,587 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 11:27:11,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:11,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951443105] [2021-12-22 11:27:11,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951443105] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:11,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:11,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 11:27:11,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900148583] [2021-12-22 11:27:11,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:11,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 11:27:11,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:11,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 11:27:11,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:27:11,590 INFO L87 Difference]: Start difference. First operand 447 states and 672 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 11:27:13,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:13,256 INFO L93 Difference]: Finished difference Result 1086 states and 1644 transitions. [2021-12-22 11:27:13,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 11:27:13,256 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 11:27:13,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:13,259 INFO L225 Difference]: With dead ends: 1086 [2021-12-22 11:27:13,259 INFO L226 Difference]: Without dead ends: 662 [2021-12-22 11:27:13,261 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 11:27:13,261 INFO L933 BasicCegarLoop]: 655 mSDtfsCounter, 1526 mSDsluCounter, 1168 mSDsCounter, 0 mSdLazyCounter, 2119 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 2788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 2119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:13,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1543 Valid, 1823 Invalid, 2788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 2119 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 11:27:13,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-12-22 11:27:13,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 449. [2021-12-22 11:27:13,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 344 states have (on average 1.5) internal successors, (516), 350 states have internal predecessors, (516), 76 states have call successors, (76), 25 states have call predecessors, (76), 28 states have return successors, (83), 75 states have call predecessors, (83), 75 states have call successors, (83) [2021-12-22 11:27:13,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 675 transitions. [2021-12-22 11:27:13,283 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 675 transitions. Word has length 156 [2021-12-22 11:27:13,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:13,283 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 675 transitions. [2021-12-22 11:27:13,283 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 11:27:13,284 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 675 transitions. [2021-12-22 11:27:13,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-22 11:27:13,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:13,286 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 11:27:13,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 11:27:13,286 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:13,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash -868010457, now seen corresponding path program 1 times [2021-12-22 11:27:13,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:13,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486831024] [2021-12-22 11:27:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:13,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:13,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 11:27:13,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 11:27:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:27:13,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 11:27:13,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 11:27:13,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 11:27:13,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 11:27:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 11:27:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 11:27:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 11:27:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 11:27:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 11:27:13,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:13,425 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 11:27:13,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:13,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486831024] [2021-12-22 11:27:13,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486831024] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:13,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:13,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 11:27:13,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440392658] [2021-12-22 11:27:13,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:13,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 11:27:13,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:13,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 11:27:13,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-22 11:27:13,427 INFO L87 Difference]: Start difference. First operand 449 states and 675 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 11:27:15,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:15,674 INFO L93 Difference]: Finished difference Result 1084 states and 1639 transitions. [2021-12-22 11:27:15,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 11:27:15,674 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 11:27:15,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:15,678 INFO L225 Difference]: With dead ends: 1084 [2021-12-22 11:27:15,678 INFO L226 Difference]: Without dead ends: 662 [2021-12-22 11:27:15,679 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 11:27:15,680 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 1674 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 3656 mSolverCounterSat, 726 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 4382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 726 IncrementalHoareTripleChecker+Valid, 3656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:15,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1674 Valid, 2357 Invalid, 4382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [726 Valid, 3656 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-22 11:27:15,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 662 states. [2021-12-22 11:27:15,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 662 to 449. [2021-12-22 11:27:15,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 344 states have (on average 1.5) internal successors, (516), 350 states have internal predecessors, (516), 76 states have call successors, (76), 25 states have call predecessors, (76), 28 states have return successors, (82), 75 states have call predecessors, (82), 75 states have call successors, (82) [2021-12-22 11:27:15,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 674 transitions. [2021-12-22 11:27:15,701 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 674 transitions. Word has length 157 [2021-12-22 11:27:15,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:15,702 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 674 transitions. [2021-12-22 11:27:15,702 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 11:27:15,702 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 674 transitions. [2021-12-22 11:27:15,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-22 11:27:15,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:15,704 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 11:27:15,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 11:27:15,704 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:15,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:15,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1982289391, now seen corresponding path program 2 times [2021-12-22 11:27:15,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:15,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118970744] [2021-12-22 11:27:15,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:15,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:15,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 11:27:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:27:15,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 11:27:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 11:27:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 11:27:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 11:27:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 11:27:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 11:27:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 11:27:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-22 11:27:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-22 11:27:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-22 11:27:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:15,843 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 11:27:15,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:15,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118970744] [2021-12-22 11:27:15,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118970744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:15,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:15,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 11:27:15,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345423888] [2021-12-22 11:27:15,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:15,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 11:27:15,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:15,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 11:27:15,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-22 11:27:15,845 INFO L87 Difference]: Start difference. First operand 449 states and 674 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 11:27:17,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:17,923 INFO L93 Difference]: Finished difference Result 1086 states and 1645 transitions. [2021-12-22 11:27:17,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 11:27:17,924 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 11:27:17,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:17,928 INFO L225 Difference]: With dead ends: 1086 [2021-12-22 11:27:17,928 INFO L226 Difference]: Without dead ends: 664 [2021-12-22 11:27:17,930 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 11:27:17,932 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 1712 mSDsluCounter, 1762 mSDsCounter, 0 mSdLazyCounter, 3651 mSolverCounterSat, 727 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 4378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 727 IncrementalHoareTripleChecker+Valid, 3651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:17,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1712 Valid, 2384 Invalid, 4378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [727 Valid, 3651 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-22 11:27:17,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-12-22 11:27:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 451. [2021-12-22 11:27:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 345 states have (on average 1.4985507246376812) internal successors, (517), 352 states have internal predecessors, (517), 76 states have call successors, (76), 25 states have call predecessors, (76), 29 states have return successors, (87), 75 states have call predecessors, (87), 75 states have call successors, (87) [2021-12-22 11:27:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 680 transitions. [2021-12-22 11:27:17,961 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 680 transitions. Word has length 158 [2021-12-22 11:27:17,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:17,962 INFO L470 AbstractCegarLoop]: Abstraction has 451 states and 680 transitions. [2021-12-22 11:27:17,963 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 11:27:17,963 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 680 transitions. [2021-12-22 11:27:17,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-22 11:27:17,965 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:17,965 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 11:27:17,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 11:27:17,965 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:17,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:17,966 INFO L85 PathProgramCache]: Analyzing trace with hash 509648940, now seen corresponding path program 1 times [2021-12-22 11:27:17,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:17,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868713665] [2021-12-22 11:27:17,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:17,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:17,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:18,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:18,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:18,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:18,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 11:27:18,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 11:27:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 11:27:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:27:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 11:27:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 11:27:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 11:27:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 11:27:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 11:27:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:18,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-22 11:27:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-22 11:27:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 11:27:18,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,091 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 11:27:18,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:18,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868713665] [2021-12-22 11:27:18,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868713665] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:27:18,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823295136] [2021-12-22 11:27:18,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:18,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:27:18,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:27:18,093 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 11:27:18,094 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 11:27:18,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:18,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 11:27:18,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:27:18,524 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 11:27:18,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 11:27:18,766 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 11:27:18,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823295136] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 11:27:18,766 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 11:27:18,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-22 11:27:18,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172454267] [2021-12-22 11:27:18,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 11:27:18,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 11:27:18,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:18,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 11:27:18,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-22 11:27:18,768 INFO L87 Difference]: Start difference. First operand 451 states and 680 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 11:27:21,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:21,791 INFO L93 Difference]: Finished difference Result 1815 states and 2953 transitions. [2021-12-22 11:27:21,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 11:27:21,800 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 11:27:21,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:21,808 INFO L225 Difference]: With dead ends: 1815 [2021-12-22 11:27:21,808 INFO L226 Difference]: Without dead ends: 1395 [2021-12-22 11:27:21,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-22 11:27:21,811 INFO L933 BasicCegarLoop]: 885 mSDtfsCounter, 3816 mSDsluCounter, 3449 mSDsCounter, 0 mSdLazyCounter, 4916 mSolverCounterSat, 1591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3818 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1591 IncrementalHoareTripleChecker+Valid, 4916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:21,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3818 Valid, 4334 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1591 Valid, 4916 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-22 11:27:21,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2021-12-22 11:27:21,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 804. [2021-12-22 11:27:21,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 634 states have (on average 1.5583596214511042) internal successors, (988), 641 states have internal predecessors, (988), 140 states have call successors, (140), 25 states have call predecessors, (140), 29 states have return successors, (161), 139 states have call predecessors, (161), 139 states have call successors, (161) [2021-12-22 11:27:21,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1289 transitions. [2021-12-22 11:27:21,858 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1289 transitions. Word has length 159 [2021-12-22 11:27:21,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:21,858 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1289 transitions. [2021-12-22 11:27:21,858 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 11:27:21,858 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1289 transitions. [2021-12-22 11:27:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-22 11:27:21,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:21,870 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 11:27:21,904 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 11:27:22,085 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 11:27:22,085 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:22,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:22,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1149749462, now seen corresponding path program 1 times [2021-12-22 11:27:22,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:22,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220495068] [2021-12-22 11:27:22,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:22,086 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:22,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 11:27:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 11:27:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 11:27:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 11:27:22,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 11:27:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 11:27:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 11:27:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 11:27:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 11:27:22,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:22,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 11:27:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-22 11:27:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-22 11:27:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:22,171 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 11:27:22,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:22,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220495068] [2021-12-22 11:27:22,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220495068] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:22,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:22,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:22,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347715890] [2021-12-22 11:27:22,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:22,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:22,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:22,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:22,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:22,174 INFO L87 Difference]: Start difference. First operand 804 states and 1289 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 11:27:23,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:23,374 INFO L93 Difference]: Finished difference Result 2076 states and 3396 transitions. [2021-12-22 11:27:23,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:23,375 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 11:27:23,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:23,380 INFO L225 Difference]: With dead ends: 2076 [2021-12-22 11:27:23,381 INFO L226 Difference]: Without dead ends: 1350 [2021-12-22 11:27:23,383 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 11:27:23,384 INFO L933 BasicCegarLoop]: 731 mSDtfsCounter, 1458 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 677 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:23,384 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1473 Valid, 1573 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [677 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 11:27:23,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2021-12-22 11:27:23,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1129. [2021-12-22 11:27:23,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1129 states, 895 states have (on average 1.5787709497206703) internal successors, (1413), 902 states have internal predecessors, (1413), 204 states have call successors, (204), 25 states have call predecessors, (204), 29 states have return successors, (235), 203 states have call predecessors, (235), 203 states have call successors, (235) [2021-12-22 11:27:23,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1852 transitions. [2021-12-22 11:27:23,453 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1852 transitions. Word has length 162 [2021-12-22 11:27:23,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:23,453 INFO L470 AbstractCegarLoop]: Abstraction has 1129 states and 1852 transitions. [2021-12-22 11:27:23,453 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 11:27:23,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1852 transitions. [2021-12-22 11:27:23,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-22 11:27:23,458 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:23,458 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 11:27:23,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 11:27:23,458 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:23,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:23,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1442917488, now seen corresponding path program 1 times [2021-12-22 11:27:23,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:23,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564749056] [2021-12-22 11:27:23,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:23,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:23,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:23,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:27:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 11:27:23,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 11:27:23,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 11:27:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 11:27:23,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 11:27:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 11:27:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 11:27:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 11:27:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:23,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 11:27:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 11:27:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-22 11:27:23,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:23,547 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 11:27:23,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:23,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564749056] [2021-12-22 11:27:23,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564749056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:23,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:23,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:23,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138971868] [2021-12-22 11:27:23,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:23,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:23,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:23,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:23,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:23,549 INFO L87 Difference]: Start difference. First operand 1129 states and 1852 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 11:27:24,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:24,779 INFO L93 Difference]: Finished difference Result 2881 states and 4780 transitions. [2021-12-22 11:27:24,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:24,779 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 11:27:24,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:24,787 INFO L225 Difference]: With dead ends: 2881 [2021-12-22 11:27:24,788 INFO L226 Difference]: Without dead ends: 1883 [2021-12-22 11:27:24,791 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 11:27:24,791 INFO L933 BasicCegarLoop]: 711 mSDtfsCounter, 1458 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:24,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1473 Valid, 1530 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [689 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 11:27:24,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2021-12-22 11:27:24,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1662. [2021-12-22 11:27:24,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1662 states, 1333 states have (on average 1.5896474118529633) internal successors, (2119), 1340 states have internal predecessors, (2119), 299 states have call successors, (299), 25 states have call predecessors, (299), 29 states have return successors, (330), 298 states have call predecessors, (330), 298 states have call successors, (330) [2021-12-22 11:27:24,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1662 states to 1662 states and 2748 transitions. [2021-12-22 11:27:24,891 INFO L78 Accepts]: Start accepts. Automaton has 1662 states and 2748 transitions. Word has length 163 [2021-12-22 11:27:24,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:24,892 INFO L470 AbstractCegarLoop]: Abstraction has 1662 states and 2748 transitions. [2021-12-22 11:27:24,892 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 11:27:24,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1662 states and 2748 transitions. [2021-12-22 11:27:24,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-22 11:27:24,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:24,898 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 11:27:24,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 11:27:24,899 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:24,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:24,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1259894904, now seen corresponding path program 1 times [2021-12-22 11:27:24,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:24,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543162536] [2021-12-22 11:27:24,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:24,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:24,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:24,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:24,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 11:27:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:27:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 11:27:24,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 11:27:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 11:27:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 11:27:24,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 11:27:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 11:27:24,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 11:27:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:24,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:25,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 11:27:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:25,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-22 11:27:25,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-22 11:27:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:25,007 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 11:27:25,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:25,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543162536] [2021-12-22 11:27:25,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543162536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:25,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:25,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:25,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829210468] [2021-12-22 11:27:25,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:25,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:25,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:25,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:25,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:25,010 INFO L87 Difference]: Start difference. First operand 1662 states and 2748 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 11:27:26,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:26,270 INFO L93 Difference]: Finished difference Result 4088 states and 6866 transitions. [2021-12-22 11:27:26,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:26,271 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 11:27:26,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:26,280 INFO L225 Difference]: With dead ends: 4088 [2021-12-22 11:27:26,280 INFO L226 Difference]: Without dead ends: 2692 [2021-12-22 11:27:26,283 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 11:27:26,284 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 1473 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1127 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 1829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 1127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:26,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1488 Valid, 1475 Invalid, 1829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [702 Valid, 1127 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 11:27:26,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2692 states. [2021-12-22 11:27:26,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2692 to 2471. [2021-12-22 11:27:26,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 2019 states have (on average 1.5978207033184746) internal successors, (3226), 2026 states have internal predecessors, (3226), 422 states have call successors, (422), 25 states have call predecessors, (422), 29 states have return successors, (469), 421 states have call predecessors, (469), 421 states have call successors, (469) [2021-12-22 11:27:26,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 4117 transitions. [2021-12-22 11:27:26,408 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 4117 transitions. Word has length 164 [2021-12-22 11:27:26,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:26,408 INFO L470 AbstractCegarLoop]: Abstraction has 2471 states and 4117 transitions. [2021-12-22 11:27:26,408 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 11:27:26,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 4117 transitions. [2021-12-22 11:27:26,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-22 11:27:26,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:26,418 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 11:27:26,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 11:27:26,418 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:26,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:26,419 INFO L85 PathProgramCache]: Analyzing trace with hash 618137199, now seen corresponding path program 1 times [2021-12-22 11:27:26,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:26,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698406872] [2021-12-22 11:27:26,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:26,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:26,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 11:27:26,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:27:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 11:27:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 11:27:26,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 11:27:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 11:27:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 11:27:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 11:27:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 11:27:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-22 11:27:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 11:27:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-22 11:27:26,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:26,495 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 11:27:26,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:26,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698406872] [2021-12-22 11:27:26,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698406872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:26,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:26,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:26,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116892720] [2021-12-22 11:27:26,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:26,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:26,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:26,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:26,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:26,497 INFO L87 Difference]: Start difference. First operand 2471 states and 4117 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 11:27:27,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:27,806 INFO L93 Difference]: Finished difference Result 5972 states and 10126 transitions. [2021-12-22 11:27:27,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:27,806 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 11:27:27,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:27,820 INFO L225 Difference]: With dead ends: 5972 [2021-12-22 11:27:27,820 INFO L226 Difference]: Without dead ends: 3986 [2021-12-22 11:27:27,824 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 11:27:27,825 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 1508 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 693 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 693 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:27,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1523 Valid, 1472 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [693 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 11:27:27,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2021-12-22 11:27:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3765. [2021-12-22 11:27:28,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3765 states, 3134 states have (on average 1.603063178047224) internal successors, (5024), 3141 states have internal predecessors, (5024), 601 states have call successors, (601), 25 states have call predecessors, (601), 29 states have return successors, (674), 600 states have call predecessors, (674), 600 states have call successors, (674) [2021-12-22 11:27:28,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3765 states to 3765 states and 6299 transitions. [2021-12-22 11:27:28,055 INFO L78 Accepts]: Start accepts. Automaton has 3765 states and 6299 transitions. Word has length 165 [2021-12-22 11:27:28,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:28,055 INFO L470 AbstractCegarLoop]: Abstraction has 3765 states and 6299 transitions. [2021-12-22 11:27:28,055 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 11:27:28,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3765 states and 6299 transitions. [2021-12-22 11:27:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-22 11:27:28,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:28,068 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 11:27:28,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 11:27:28,069 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:28,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:28,069 INFO L85 PathProgramCache]: Analyzing trace with hash 682771916, now seen corresponding path program 1 times [2021-12-22 11:27:28,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:28,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377910863] [2021-12-22 11:27:28,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:28,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:28,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:28,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:28,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:28,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 11:27:28,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:27:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 11:27:28,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 11:27:28,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:27:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 11:27:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 11:27:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 11:27:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 11:27:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-22 11:27:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-22 11:27:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-22 11:27:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:28,151 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 11:27:28,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:28,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377910863] [2021-12-22 11:27:28,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377910863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:28,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:28,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:28,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853885557] [2021-12-22 11:27:28,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:28,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:28,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:28,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:28,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:28,154 INFO L87 Difference]: Start difference. First operand 3765 states and 6299 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 11:27:29,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:29,543 INFO L93 Difference]: Finished difference Result 9075 states and 15490 transitions. [2021-12-22 11:27:29,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:29,543 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 11:27:29,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:29,566 INFO L225 Difference]: With dead ends: 9075 [2021-12-22 11:27:29,567 INFO L226 Difference]: Without dead ends: 6127 [2021-12-22 11:27:29,574 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 11:27:29,575 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 1489 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 1137 mSolverCounterSat, 705 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1504 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 1842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 705 IncrementalHoareTripleChecker+Valid, 1137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:29,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1504 Valid, 1531 Invalid, 1842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [705 Valid, 1137 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 11:27:29,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6127 states. [2021-12-22 11:27:29,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6127 to 5906. [2021-12-22 11:27:29,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5906 states, 4899 states have (on average 1.5982853643600734) internal successors, (7830), 4906 states have internal predecessors, (7830), 977 states have call successors, (977), 25 states have call predecessors, (977), 29 states have return successors, (1094), 976 states have call predecessors, (1094), 976 states have call successors, (1094) [2021-12-22 11:27:29,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5906 states to 5906 states and 9901 transitions. [2021-12-22 11:27:29,876 INFO L78 Accepts]: Start accepts. Automaton has 5906 states and 9901 transitions. Word has length 166 [2021-12-22 11:27:29,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:29,877 INFO L470 AbstractCegarLoop]: Abstraction has 5906 states and 9901 transitions. [2021-12-22 11:27:29,877 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 11:27:29,877 INFO L276 IsEmpty]: Start isEmpty. Operand 5906 states and 9901 transitions. [2021-12-22 11:27:29,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-22 11:27:29,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:29,897 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 11:27:29,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 11:27:29,897 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:29,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:29,897 INFO L85 PathProgramCache]: Analyzing trace with hash 949048363, now seen corresponding path program 1 times [2021-12-22 11:27:29,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:29,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357157673] [2021-12-22 11:27:29,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:29,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:29,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:29,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:29,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:29,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:29,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:29,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:29,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:29,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:29,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 11:27:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:30,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 11:27:30,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:30,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:27:30,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:30,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 11:27:30,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:30,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 11:27:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:30,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 11:27:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:30,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 11:27:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:30,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 11:27:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:30,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 11:27:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:30,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:30,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-22 11:27:30,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:30,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-22 11:27:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:30,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-22 11:27:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:30,029 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 11:27:30,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:30,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357157673] [2021-12-22 11:27:30,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357157673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:30,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:30,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:30,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025539227] [2021-12-22 11:27:30,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:30,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:30,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:30,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:30,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:30,031 INFO L87 Difference]: Start difference. First operand 5906 states and 9901 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 11:27:31,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:31,626 INFO L93 Difference]: Finished difference Result 14692 states and 25103 transitions. [2021-12-22 11:27:31,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:31,632 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 11:27:31,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:31,665 INFO L225 Difference]: With dead ends: 14692 [2021-12-22 11:27:31,665 INFO L226 Difference]: Without dead ends: 10005 [2021-12-22 11:27:31,682 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 11:27:31,682 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 1537 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 709 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 1824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 709 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:31,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1552 Valid, 1478 Invalid, 1824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [709 Valid, 1115 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 11:27:31,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10005 states. [2021-12-22 11:27:32,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10005 to 9784. [2021-12-22 11:27:32,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9784 states, 8171 states have (on average 1.5969893525884225) internal successors, (13049), 8178 states have internal predecessors, (13049), 1583 states have call successors, (1583), 25 states have call predecessors, (1583), 29 states have return successors, (1778), 1582 states have call predecessors, (1778), 1582 states have call successors, (1778) [2021-12-22 11:27:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9784 states to 9784 states and 16410 transitions. [2021-12-22 11:27:32,221 INFO L78 Accepts]: Start accepts. Automaton has 9784 states and 16410 transitions. Word has length 167 [2021-12-22 11:27:32,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:32,222 INFO L470 AbstractCegarLoop]: Abstraction has 9784 states and 16410 transitions. [2021-12-22 11:27:32,222 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 11:27:32,222 INFO L276 IsEmpty]: Start isEmpty. Operand 9784 states and 16410 transitions. [2021-12-22 11:27:32,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-22 11:27:32,260 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:32,260 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 11:27:32,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 11:27:32,260 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:32,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:32,260 INFO L85 PathProgramCache]: Analyzing trace with hash -552933858, now seen corresponding path program 1 times [2021-12-22 11:27:32,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:32,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558879934] [2021-12-22 11:27:32,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:32,261 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 11:27:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 11:27:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 11:27:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 11:27:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 11:27:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 11:27:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 11:27:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-22 11:27:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 11:27:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-22 11:27:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-22 11:27:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-22 11:27:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:32,344 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 11:27:32,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:32,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558879934] [2021-12-22 11:27:32,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558879934] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:32,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:32,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:32,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145557093] [2021-12-22 11:27:32,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:32,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:32,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:32,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:32,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:32,347 INFO L87 Difference]: Start difference. First operand 9784 states and 16410 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 11:27:34,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:34,202 INFO L93 Difference]: Finished difference Result 25401 states and 43384 transitions. [2021-12-22 11:27:34,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:34,203 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 11:27:34,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:34,257 INFO L225 Difference]: With dead ends: 25401 [2021-12-22 11:27:34,257 INFO L226 Difference]: Without dead ends: 17318 [2021-12-22 11:27:34,281 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 11:27:34,282 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 1455 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1470 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:34,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1470 Valid, 1556 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 11:27:34,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17318 states. [2021-12-22 11:27:35,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17318 to 17097. [2021-12-22 11:27:35,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17097 states, 14281 states have (on average 1.589174427561095) internal successors, (22695), 14288 states have internal predecessors, (22695), 2786 states have call successors, (2786), 25 states have call predecessors, (2786), 29 states have return successors, (3125), 2785 states have call predecessors, (3125), 2785 states have call successors, (3125) [2021-12-22 11:27:35,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17097 states to 17097 states and 28606 transitions. [2021-12-22 11:27:35,121 INFO L78 Accepts]: Start accepts. Automaton has 17097 states and 28606 transitions. Word has length 168 [2021-12-22 11:27:35,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:35,122 INFO L470 AbstractCegarLoop]: Abstraction has 17097 states and 28606 transitions. [2021-12-22 11:27:35,122 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 11:27:35,122 INFO L276 IsEmpty]: Start isEmpty. Operand 17097 states and 28606 transitions. [2021-12-22 11:27:35,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-22 11:27:35,158 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:35,158 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 11:27:35,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 11:27:35,159 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:35,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:35,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1307074826, now seen corresponding path program 1 times [2021-12-22 11:27:35,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:35,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486418577] [2021-12-22 11:27:35,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:35,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:27:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-22 11:27:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 11:27:35,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 11:27:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 11:27:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 11:27:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 11:27:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-22 11:27:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 11:27:35,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-22 11:27:35,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-22 11:27:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-22 11:27:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:35,249 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 11:27:35,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:35,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486418577] [2021-12-22 11:27:35,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486418577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:35,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:35,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:35,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739264212] [2021-12-22 11:27:35,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:35,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:35,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:35,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:35,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:35,250 INFO L87 Difference]: Start difference. First operand 17097 states and 28606 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 11:27:37,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:37,751 INFO L93 Difference]: Finished difference Result 45377 states and 77397 transitions. [2021-12-22 11:27:37,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:37,751 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 11:27:37,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:37,865 INFO L225 Difference]: With dead ends: 45377 [2021-12-22 11:27:37,865 INFO L226 Difference]: Without dead ends: 30658 [2021-12-22 11:27:37,897 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 11:27:37,898 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 1453 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 1146 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 1854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 1146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:37,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1468 Valid, 1499 Invalid, 1854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [708 Valid, 1146 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 11:27:37,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30658 states. [2021-12-22 11:27:39,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30658 to 30437. [2021-12-22 11:27:39,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30437 states, 25582 states have (on average 1.5854116175435853) internal successors, (40558), 25589 states have internal predecessors, (40558), 4825 states have call successors, (4825), 25 states have call predecessors, (4825), 29 states have return successors, (5438), 4824 states have call predecessors, (5438), 4824 states have call successors, (5438) [2021-12-22 11:27:39,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30437 states to 30437 states and 50821 transitions. [2021-12-22 11:27:39,407 INFO L78 Accepts]: Start accepts. Automaton has 30437 states and 50821 transitions. Word has length 169 [2021-12-22 11:27:39,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:39,408 INFO L470 AbstractCegarLoop]: Abstraction has 30437 states and 50821 transitions. [2021-12-22 11:27:39,408 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 11:27:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 30437 states and 50821 transitions. [2021-12-22 11:27:39,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-22 11:27:39,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:39,646 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 11:27:39,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 11:27:39,647 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:39,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:39,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1163844476, now seen corresponding path program 1 times [2021-12-22 11:27:39,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:39,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433730722] [2021-12-22 11:27:39,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:39,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:39,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:27:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 11:27:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 11:27:39,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 11:27:39,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 11:27:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 11:27:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 11:27:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 11:27:39,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-22 11:27:39,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 11:27:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-22 11:27:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-22 11:27:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:39,756 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 11:27:39,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:39,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433730722] [2021-12-22 11:27:39,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433730722] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:39,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:39,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:39,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664299865] [2021-12-22 11:27:39,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:39,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:39,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:39,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:39,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:39,759 INFO L87 Difference]: Start difference. First operand 30437 states and 50821 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 11:27:43,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:43,166 INFO L93 Difference]: Finished difference Result 83114 states and 140921 transitions. [2021-12-22 11:27:43,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:43,166 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 11:27:43,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:43,359 INFO L225 Difference]: With dead ends: 83114 [2021-12-22 11:27:43,359 INFO L226 Difference]: Without dead ends: 55867 [2021-12-22 11:27:43,419 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 11:27:43,420 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 1458 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 702 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1517 SdHoareTripleChecker+Invalid, 1838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 702 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:43,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1473 Valid, 1517 Invalid, 1838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [702 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 11:27:43,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55867 states. [2021-12-22 11:27:46,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55867 to 55646. [2021-12-22 11:27:46,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55646 states, 47076 states have (on average 1.5801894808394936) internal successors, (74389), 47083 states have internal predecessors, (74389), 8540 states have call successors, (8540), 25 states have call predecessors, (8540), 29 states have return successors, (9685), 8539 states have call predecessors, (9685), 8539 states have call successors, (9685) [2021-12-22 11:27:46,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55646 states to 55646 states and 92614 transitions. [2021-12-22 11:27:46,374 INFO L78 Accepts]: Start accepts. Automaton has 55646 states and 92614 transitions. Word has length 170 [2021-12-22 11:27:46,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:46,374 INFO L470 AbstractCegarLoop]: Abstraction has 55646 states and 92614 transitions. [2021-12-22 11:27:46,375 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 11:27:46,375 INFO L276 IsEmpty]: Start isEmpty. Operand 55646 states and 92614 transitions. [2021-12-22 11:27:46,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-22 11:27:46,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:46,466 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:27:46,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 11:27:46,466 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:46,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:46,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1443753194, now seen corresponding path program 1 times [2021-12-22 11:27:46,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:46,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027335281] [2021-12-22 11:27:46,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:46,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:46,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:46,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:46,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:27:46,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 11:27:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 11:27:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 11:27:46,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 11:27:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 11:27:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 11:27:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 11:27:46,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 11:27:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-22 11:27:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-22 11:27:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-22 11:27:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:46,559 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 11:27:46,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:46,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027335281] [2021-12-22 11:27:46,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027335281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:27:46,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:27:46,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:27:46,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970952082] [2021-12-22 11:27:46,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:27:46,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:27:46,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:46,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:27:46,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:27:46,561 INFO L87 Difference]: Start difference. First operand 55646 states and 92614 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 11:27:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:27:51,555 INFO L93 Difference]: Finished difference Result 104170 states and 176907 transitions. [2021-12-22 11:27:51,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:27:51,556 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 11:27:51,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:27:51,964 INFO L225 Difference]: With dead ends: 104170 [2021-12-22 11:27:51,965 INFO L226 Difference]: Without dead ends: 103941 [2021-12-22 11:27:52,178 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 11:27:52,179 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 1588 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1603 SdHoareTripleChecker+Valid, 1456 SdHoareTripleChecker+Invalid, 1815 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-22 11:27:52,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1603 Valid, 1456 Invalid, 1815 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-22 11:27:52,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103941 states. [2021-12-22 11:27:57,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103941 to 103720. [2021-12-22 11:27:57,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103720 states, 88351 states have (on average 1.573496621430431) internal successors, (139020), 88358 states have internal predecessors, (139020), 15339 states have call successors, (15339), 25 states have call predecessors, (15339), 29 states have return successors, (17530), 15338 states have call predecessors, (17530), 15338 states have call successors, (17530) [2021-12-22 11:27:57,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103720 states to 103720 states and 171889 transitions. [2021-12-22 11:27:57,941 INFO L78 Accepts]: Start accepts. Automaton has 103720 states and 171889 transitions. Word has length 171 [2021-12-22 11:27:57,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:27:57,941 INFO L470 AbstractCegarLoop]: Abstraction has 103720 states and 171889 transitions. [2021-12-22 11:27:57,941 INFO L471 AbstractCegarLoop]: INTERPOLANT 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) [2021-12-22 11:27:57,941 INFO L276 IsEmpty]: Start isEmpty. Operand 103720 states and 171889 transitions. [2021-12-22 11:27:58,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-22 11:27:58,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:27:58,053 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, 1] [2021-12-22 11:27:58,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 11:27:58,053 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:27:58,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:27:58,054 INFO L85 PathProgramCache]: Analyzing trace with hash -563616995, now seen corresponding path program 1 times [2021-12-22 11:27:58,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:27:58,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773339090] [2021-12-22 11:27:58,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:58,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:27:58,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:27:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:27:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:27:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:27:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:27:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:27:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 11:27:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 11:27:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 11:27:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:27:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 11:27:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 11:27:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 11:27:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 11:27:58,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-22 11:27:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:27:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 11:27:58,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-22 11:27:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-22 11:27:58,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-22 11:27:58,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:27:58,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773339090] [2021-12-22 11:27:58,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773339090] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:27:58,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044355702] [2021-12-22 11:27:58,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:27:58,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:27:58,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:27:58,232 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 11:27:58,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 11:27:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:27:58,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 1328 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-22 11:27:58,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:27:58,820 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-22 11:27:58,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 11:27:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-22 11:27:59,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044355702] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 11:27:59,326 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 11:27:59,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2021-12-22 11:27:59,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78388282] [2021-12-22 11:27:59,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 11:27:59,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-22 11:27:59,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:27:59,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-22 11:27:59,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2021-12-22 11:27:59,328 INFO L87 Difference]: Start difference. First operand 103720 states and 171889 transitions. Second operand has 32 states, 30 states have (on average 8.866666666666667) internal successors, (266), 24 states have internal predecessors, (266), 9 states have call successors, (54), 12 states have call predecessors, (54), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48)