./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec11_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec11_product30.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4fb36b23f327758af91661b12ca1735faf7949901dbd5c1543c17ea0384ceb9 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 11:23:58,301 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 11:23:58,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 11:23:58,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 11:23:58,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 11:23:58,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 11:23:58,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 11:23:58,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 11:23:58,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 11:23:58,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 11:23:58,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 11:23:58,357 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 11:23:58,357 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 11:23:58,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 11:23:58,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 11:23:58,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 11:23:58,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 11:23:58,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 11:23:58,365 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 11:23:58,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 11:23:58,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 11:23:58,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 11:23:58,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 11:23:58,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 11:23:58,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 11:23:58,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 11:23:58,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 11:23:58,378 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 11:23:58,379 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 11:23:58,380 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 11:23:58,380 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 11:23:58,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 11:23:58,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 11:23:58,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 11:23:58,383 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 11:23:58,383 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 11:23:58,384 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 11:23:58,384 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 11:23:58,384 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 11:23:58,385 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 11:23:58,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 11:23:58,387 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 11:23:58,407 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 11:23:58,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 11:23:58,409 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 11:23:58,409 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 11:23:58,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 11:23:58,410 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 11:23:58,410 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 11:23:58,410 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 11:23:58,410 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 11:23:58,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 11:23:58,411 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 11:23:58,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 11:23:58,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 11:23:58,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 11:23:58,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 11:23:58,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 11:23:58,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 11:23:58,412 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 11:23:58,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 11:23:58,412 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 11:23:58,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 11:23:58,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 11:23:58,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 11:23:58,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 11:23:58,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:23:58,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 11:23:58,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 11:23:58,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 11:23:58,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 11:23:58,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 11:23:58,414 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 11:23:58,414 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 11:23:58,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 11:23:58,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 11:23:58,415 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4fb36b23f327758af91661b12ca1735faf7949901dbd5c1543c17ea0384ceb9 [2021-12-22 11:23:58,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 11:23:58,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 11:23:58,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 11:23:58,641 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 11:23:58,642 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 11:23:58,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec11_product30.cil.c [2021-12-22 11:23:58,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aad7df6d/3fe2f09863094d18bc03816c72ef8bf2/FLAGf6cf9e510 [2021-12-22 11:23:59,171 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 11:23:59,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec11_product30.cil.c [2021-12-22 11:23:59,199 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aad7df6d/3fe2f09863094d18bc03816c72ef8bf2/FLAGf6cf9e510 [2021-12-22 11:23:59,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aad7df6d/3fe2f09863094d18bc03816c72ef8bf2 [2021-12-22 11:23:59,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 11:23:59,471 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 11:23:59,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 11:23:59,472 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 11:23:59,475 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 11:23:59,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:23:59" (1/1) ... [2021-12-22 11:23:59,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a47480 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:23:59, skipping insertion in model container [2021-12-22 11:23:59,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:23:59" (1/1) ... [2021-12-22 11:23:59,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 11:23:59,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 11:23:59,834 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_spec11_product30.cil.c[29507,29520] [2021-12-22 11:23:59,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:23:59,943 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 11:23:59,982 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_spec11_product30.cil.c[29507,29520] [2021-12-22 11:24:00,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 11:24:00,023 INFO L208 MainTranslator]: Completed translation [2021-12-22 11:24:00,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:24:00 WrapperNode [2021-12-22 11:24:00,023 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 11:24:00,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 11:24:00,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 11:24:00,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 11:24:00,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:24:00" (1/1) ... [2021-12-22 11:24:00,055 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:24:00" (1/1) ... [2021-12-22 11:24:00,113 INFO L137 Inliner]: procedures = 131, calls = 217, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 903 [2021-12-22 11:24:00,114 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 11:24:00,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 11:24:00,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 11:24:00,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 11:24:00,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:24:00" (1/1) ... [2021-12-22 11:24:00,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:24:00" (1/1) ... [2021-12-22 11:24:00,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:24:00" (1/1) ... [2021-12-22 11:24:00,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:24:00" (1/1) ... [2021-12-22 11:24:00,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:24:00" (1/1) ... [2021-12-22 11:24:00,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:24:00" (1/1) ... [2021-12-22 11:24:00,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:24:00" (1/1) ... [2021-12-22 11:24:00,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 11:24:00,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 11:24:00,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 11:24:00,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 11:24:00,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:24:00" (1/1) ... [2021-12-22 11:24:00,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 11:24:00,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:24:00,228 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 11:24:00,258 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 11:24:00,277 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2021-12-22 11:24:00,277 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2021-12-22 11:24:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2021-12-22 11:24:00,278 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2021-12-22 11:24:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2021-12-22 11:24:00,278 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2021-12-22 11:24:00,278 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2021-12-22 11:24:00,280 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2021-12-22 11:24:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2021-12-22 11:24:00,280 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2021-12-22 11:24:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2021-12-22 11:24:00,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2021-12-22 11:24:00,280 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2021-12-22 11:24:00,281 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2021-12-22 11:24:00,281 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2021-12-22 11:24:00,281 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2021-12-22 11:24:00,281 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2021-12-22 11:24:00,281 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2021-12-22 11:24:00,281 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2021-12-22 11:24:00,281 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2021-12-22 11:24:00,281 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2021-12-22 11:24:00,281 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2021-12-22 11:24:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2021-12-22 11:24:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2021-12-22 11:24:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2021-12-22 11:24:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 11:24:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2021-12-22 11:24:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2021-12-22 11:24:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2021-12-22 11:24:00,282 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2021-12-22 11:24:00,282 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2021-12-22 11:24:00,283 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2021-12-22 11:24:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2021-12-22 11:24:00,283 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2021-12-22 11:24:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2021-12-22 11:24:00,283 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2021-12-22 11:24:00,283 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2021-12-22 11:24:00,284 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2021-12-22 11:24:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2021-12-22 11:24:00,284 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2021-12-22 11:24:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2021-12-22 11:24:00,284 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2021-12-22 11:24:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2021-12-22 11:24:00,284 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2021-12-22 11:24:00,284 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2021-12-22 11:24:00,284 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2021-12-22 11:24:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 11:24:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2021-12-22 11:24:00,285 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2021-12-22 11:24:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 11:24:00,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 11:24:00,420 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 11:24:00,422 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 11:24:00,867 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 11:24:00,873 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 11:24:00,874 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 11:24:00,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:24:00 BoogieIcfgContainer [2021-12-22 11:24:00,875 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 11:24:00,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 11:24:00,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 11:24:00,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 11:24:00,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:23:59" (1/3) ... [2021-12-22 11:24:00,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6149f263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:24:00, skipping insertion in model container [2021-12-22 11:24:00,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:24:00" (2/3) ... [2021-12-22 11:24:00,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6149f263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:24:00, skipping insertion in model container [2021-12-22 11:24:00,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:24:00" (3/3) ... [2021-12-22 11:24:00,881 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product30.cil.c [2021-12-22 11:24:00,885 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 11:24:00,885 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 11:24:00,915 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 11:24:00,919 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 11:24:00,919 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 11:24:00,934 INFO L276 IsEmpty]: Start isEmpty. Operand has 344 states, 267 states have (on average 1.5168539325842696) internal successors, (405), 271 states have internal predecessors, (405), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2021-12-22 11:24:00,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-22 11:24:00,947 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:00,947 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, 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] [2021-12-22 11:24:00,948 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:00,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:00,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2096847665, now seen corresponding path program 1 times [2021-12-22 11:24:00,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:00,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545334012] [2021-12-22 11:24:00,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:00,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:24:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:24:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:24:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 11:24:01,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-22 11:24:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 11:24:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 11:24:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:24:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:24:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 11:24:01,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 11:24:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 11:24:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-22 11:24:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,444 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 11:24:01,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:01,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545334012] [2021-12-22 11:24:01,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545334012] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:24:01,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789176203] [2021-12-22 11:24:01,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:01,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:24:01,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:24:01,475 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 11:24:01,523 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 11:24:01,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:01,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 11:24:01,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:24:02,004 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-22 11:24:02,005 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:24:02,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789176203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:02,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:24:02,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2021-12-22 11:24:02,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549253524] [2021-12-22 11:24:02,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:02,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 11:24:02,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:02,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 11:24:02,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:24:02,033 INFO L87 Difference]: Start difference. First operand has 344 states, 267 states have (on average 1.5168539325842696) internal successors, (405), 271 states have internal predecessors, (405), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:02,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:02,067 INFO L93 Difference]: Finished difference Result 534 states and 772 transitions. [2021-12-22 11:24:02,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 11:24:02,070 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 139 [2021-12-22 11:24:02,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:02,079 INFO L225 Difference]: With dead ends: 534 [2021-12-22 11:24:02,079 INFO L226 Difference]: Without dead ends: 337 [2021-12-22 11:24:02,083 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:24:02,086 INFO L933 BasicCegarLoop]: 505 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, 505 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 11:24:02,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:24:02,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-12-22 11:24:02,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2021-12-22 11:24:02,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 261 states have (on average 1.5095785440613028) internal successors, (394), 264 states have internal predecessors, (394), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-22 11:24:02,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 497 transitions. [2021-12-22 11:24:02,148 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 497 transitions. Word has length 139 [2021-12-22 11:24:02,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:02,149 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 497 transitions. [2021-12-22 11:24:02,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 497 transitions. [2021-12-22 11:24:02,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-22 11:24:02,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:02,154 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:24:02,191 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 11:24:02,363 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 11:24:02,364 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:02,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:02,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1596088140, now seen corresponding path program 1 times [2021-12-22 11:24:02,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:02,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433454659] [2021-12-22 11:24:02,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:02,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:24:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:24:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:24:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-22 11:24:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-22 11:24:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 11:24:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 11:24:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:24:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 11:24:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 11:24:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:24:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 11:24:02,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:02,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 11:24:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:02,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,560 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-22 11:24:02,560 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:02,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433454659] [2021-12-22 11:24:02,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433454659] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:24:02,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160709023] [2021-12-22 11:24:02,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:02,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:24:02,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:24:02,566 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 11:24:02,568 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 11:24:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:02,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1217 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 11:24:02,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:24:02,996 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-22 11:24:02,997 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:24:02,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160709023] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:02,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:24:02,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-22 11:24:02,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171565669] [2021-12-22 11:24:02,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:02,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:24:02,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:02,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:24:02,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:24:02,999 INFO L87 Difference]: Start difference. First operand 337 states and 497 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:03,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:03,033 INFO L93 Difference]: Finished difference Result 524 states and 753 transitions. [2021-12-22 11:24:03,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:24:03,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 140 [2021-12-22 11:24:03,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:03,036 INFO L225 Difference]: With dead ends: 524 [2021-12-22 11:24:03,036 INFO L226 Difference]: Without dead ends: 340 [2021-12-22 11:24:03,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 171 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 11:24:03,038 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 1 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 988 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 11:24:03,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 988 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:24:03,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-12-22 11:24:03,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 339. [2021-12-22 11:24:03,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 263 states have (on average 1.505703422053232) internal successors, (396), 266 states have internal predecessors, (396), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2021-12-22 11:24:03,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 499 transitions. [2021-12-22 11:24:03,075 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 499 transitions. Word has length 140 [2021-12-22 11:24:03,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:03,075 INFO L470 AbstractCegarLoop]: Abstraction has 339 states and 499 transitions. [2021-12-22 11:24:03,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:03,076 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 499 transitions. [2021-12-22 11:24:03,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-12-22 11:24:03,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:03,078 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, 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] [2021-12-22 11:24:03,099 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 11:24:03,295 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 11:24:03,295 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:03,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:03,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1631328548, now seen corresponding path program 1 times [2021-12-22 11:24:03,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:03,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172816854] [2021-12-22 11:24:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:03,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:03,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:24:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:24:03,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:24:03,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-22 11:24:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 11:24:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 11:24:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-22 11:24:03,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 11:24:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 11:24:03,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 11:24:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 11:24:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 11:24:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 11:24:03,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:03,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,462 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-22 11:24:03,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:03,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172816854] [2021-12-22 11:24:03,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172816854] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:24:03,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052393164] [2021-12-22 11:24:03,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:03,463 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:24:03,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:24:03,464 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 11:24:03,528 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 11:24:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:03,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 1244 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 11:24:03,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:24:03,981 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-22 11:24:03,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:24:03,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052393164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:03,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:24:03,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-12-22 11:24:03,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101504570] [2021-12-22 11:24:03,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:03,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 11:24:03,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:03,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 11:24:03,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:24:03,984 INFO L87 Difference]: Start difference. First operand 339 states and 499 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:04,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:04,007 INFO L93 Difference]: Finished difference Result 708 states and 1057 transitions. [2021-12-22 11:24:04,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 11:24:04,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 149 [2021-12-22 11:24:04,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:04,009 INFO L225 Difference]: With dead ends: 708 [2021-12-22 11:24:04,010 INFO L226 Difference]: Without dead ends: 396 [2021-12-22 11:24:04,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 11:24:04,011 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 107 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 962 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 11:24:04,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 962 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:24:04,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-12-22 11:24:04,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 388. [2021-12-22 11:24:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 301 states have (on average 1.521594684385382) internal successors, (458), 304 states have internal predecessors, (458), 63 states have call successors, (63), 23 states have call predecessors, (63), 23 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2021-12-22 11:24:04,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 583 transitions. [2021-12-22 11:24:04,053 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 583 transitions. Word has length 149 [2021-12-22 11:24:04,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:04,053 INFO L470 AbstractCegarLoop]: Abstraction has 388 states and 583 transitions. [2021-12-22 11:24:04,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:04,053 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 583 transitions. [2021-12-22 11:24:04,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-22 11:24:04,055 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:04,056 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:24:04,077 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 11:24:04,256 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 11:24:04,257 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:04,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:04,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1345709823, now seen corresponding path program 1 times [2021-12-22 11:24:04,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:04,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298994928] [2021-12-22 11:24:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:04,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:04,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-22 11:24:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 11:24:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-22 11:24:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-22 11:24:04,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 11:24:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 11:24:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 11:24:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:24:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 11:24:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 11:24:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 11:24:04,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 11:24:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-22 11:24:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-22 11:24:04,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:04,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298994928] [2021-12-22 11:24:04,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298994928] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:24:04,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225713016] [2021-12-22 11:24:04,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:04,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:24:04,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:24:04,420 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 11:24:04,432 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 11:24:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:04,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1251 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-22 11:24:04,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:24:04,880 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-22 11:24:04,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:24:04,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225713016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:04,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:24:04,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2021-12-22 11:24:04,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219464021] [2021-12-22 11:24:04,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:04,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 11:24:04,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:04,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 11:24:04,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-22 11:24:04,883 INFO L87 Difference]: Start difference. First operand 388 states and 583 transitions. Second operand has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-22 11:24:04,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:04,926 INFO L93 Difference]: Finished difference Result 767 states and 1156 transitions. [2021-12-22 11:24:04,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 11:24:04,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 150 [2021-12-22 11:24:04,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:04,928 INFO L225 Difference]: With dead ends: 767 [2021-12-22 11:24:04,928 INFO L226 Difference]: Without dead ends: 390 [2021-12-22 11:24:04,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-22 11:24:04,930 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 125 mSDsluCounter, 1320 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1808 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 11:24:04,930 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 1808 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:24:04,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-12-22 11:24:04,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2021-12-22 11:24:04,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 302 states have (on average 1.5198675496688743) internal successors, (459), 306 states have internal predecessors, (459), 63 states have call successors, (63), 23 states have call predecessors, (63), 24 states have return successors, (64), 62 states have call predecessors, (64), 62 states have call successors, (64) [2021-12-22 11:24:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 586 transitions. [2021-12-22 11:24:04,952 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 586 transitions. Word has length 150 [2021-12-22 11:24:04,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:04,952 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 586 transitions. [2021-12-22 11:24:04,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.0) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-22 11:24:04,953 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 586 transitions. [2021-12-22 11:24:04,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-22 11:24:04,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:04,955 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, 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] [2021-12-22 11:24:04,981 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 11:24:05,174 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 11:24:05,174 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:05,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:05,175 INFO L85 PathProgramCache]: Analyzing trace with hash 783105652, now seen corresponding path program 1 times [2021-12-22 11:24:05,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:05,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204044199] [2021-12-22 11:24:05,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:05,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:05,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-22 11:24:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-22 11:24:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 11:24:05,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 11:24:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 11:24:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 11:24:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 11:24:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 11:24:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 11:24:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 11:24:05,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 11:24:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:05,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-22 11:24:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:05,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,305 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-22 11:24:05,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:05,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204044199] [2021-12-22 11:24:05,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204044199] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:24:05,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647282804] [2021-12-22 11:24:05,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:05,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:24:05,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:24:05,307 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 11:24:05,337 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 11:24:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:05,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 1252 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-22 11:24:05,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:24:05,788 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-22 11:24:05,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 11:24:05,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647282804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:05,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-22 11:24:05,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-22 11:24:05,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385448963] [2021-12-22 11:24:05,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:05,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 11:24:05,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:05,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 11:24:05,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2021-12-22 11:24:05,791 INFO L87 Difference]: Start difference. First operand 390 states and 586 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-22 11:24:05,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:05,838 INFO L93 Difference]: Finished difference Result 769 states and 1161 transitions. [2021-12-22 11:24:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 11:24:05,839 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 151 [2021-12-22 11:24:05,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:05,841 INFO L225 Difference]: With dead ends: 769 [2021-12-22 11:24:05,841 INFO L226 Difference]: Without dead ends: 392 [2021-12-22 11:24:05,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 179 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 11:24:05,843 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 124 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1797 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 11:24:05,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 1797 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 11:24:05,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2021-12-22 11:24:05,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2021-12-22 11:24:05,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 303 states have (on average 1.518151815181518) internal successors, (460), 308 states have internal predecessors, (460), 63 states have call successors, (63), 23 states have call predecessors, (63), 25 states have return successors, (69), 62 states have call predecessors, (69), 62 states have call successors, (69) [2021-12-22 11:24:05,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 592 transitions. [2021-12-22 11:24:05,859 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 592 transitions. Word has length 151 [2021-12-22 11:24:05,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:05,860 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 592 transitions. [2021-12-22 11:24:05,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-22 11:24:05,860 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 592 transitions. [2021-12-22 11:24:05,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-22 11:24:05,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:05,862 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, 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 11:24:05,883 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 11:24:06,080 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 11:24:06,081 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:06,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:06,081 INFO L85 PathProgramCache]: Analyzing trace with hash 530880536, now seen corresponding path program 1 times [2021-12-22 11:24:06,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:06,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321408460] [2021-12-22 11:24:06,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:06,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:06,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:06,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-22 11:24:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-22 11:24:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-22 11:24:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:24:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 11:24:06,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 11:24:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:24:06,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 11:24:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 11:24:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 11:24:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-22 11:24:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:06,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:06,181 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-22 11:24:06,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:06,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321408460] [2021-12-22 11:24:06,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321408460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:06,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:24:06,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 11:24:06,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619391510] [2021-12-22 11:24:06,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:06,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 11:24:06,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:06,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 11:24:06,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:24:06,183 INFO L87 Difference]: Start difference. First operand 392 states and 592 transitions. Second operand has 9 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-22 11:24:07,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:07,513 INFO L93 Difference]: Finished difference Result 873 states and 1320 transitions. [2021-12-22 11:24:07,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 11:24:07,514 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 152 [2021-12-22 11:24:07,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:07,516 INFO L225 Difference]: With dead ends: 873 [2021-12-22 11:24:07,516 INFO L226 Difference]: Without dead ends: 504 [2021-12-22 11:24:07,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-22 11:24:07,518 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 1254 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 436 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 1963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 436 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:07,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1271 Valid, 1558 Invalid, 1963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [436 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 11:24:07,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2021-12-22 11:24:07,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 392. [2021-12-22 11:24:07,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 303 states have (on average 1.518151815181518) internal successors, (460), 308 states have internal predecessors, (460), 63 states have call successors, (63), 23 states have call predecessors, (63), 25 states have return successors, (68), 62 states have call predecessors, (68), 62 states have call successors, (68) [2021-12-22 11:24:07,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 591 transitions. [2021-12-22 11:24:07,537 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 591 transitions. Word has length 152 [2021-12-22 11:24:07,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:07,537 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 591 transitions. [2021-12-22 11:24:07,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-22 11:24:07,538 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 591 transitions. [2021-12-22 11:24:07,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-22 11:24:07,539 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:07,539 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:24:07,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 11:24:07,540 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:07,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:07,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2124980205, now seen corresponding path program 2 times [2021-12-22 11:24:07,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:07,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386886641] [2021-12-22 11:24:07,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:07,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-22 11:24:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 11:24:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 11:24:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:24:07,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 11:24:07,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 11:24:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 11:24:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 11:24:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 11:24:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 11:24:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:07,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-22 11:24:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:07,637 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-12-22 11:24:07,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:07,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386886641] [2021-12-22 11:24:07,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386886641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:07,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:24:07,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-22 11:24:07,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939144516] [2021-12-22 11:24:07,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:07,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 11:24:07,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:07,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 11:24:07,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 11:24:07,640 INFO L87 Difference]: Start difference. First operand 392 states and 591 transitions. Second operand has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-22 11:24:08,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:08,892 INFO L93 Difference]: Finished difference Result 875 states and 1323 transitions. [2021-12-22 11:24:08,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 11:24:08,892 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 153 [2021-12-22 11:24:08,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:08,895 INFO L225 Difference]: With dead ends: 875 [2021-12-22 11:24:08,895 INFO L226 Difference]: Without dead ends: 506 [2021-12-22 11:24:08,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 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 11:24:08,897 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 1232 mSDsluCounter, 1027 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 1986 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:08,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 1571 Invalid, 1986 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-22 11:24:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-12-22 11:24:08,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 394. [2021-12-22 11:24:08,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 304 states have (on average 1.5164473684210527) internal successors, (461), 310 states have internal predecessors, (461), 63 states have call successors, (63), 23 states have call predecessors, (63), 26 states have return successors, (70), 62 states have call predecessors, (70), 62 states have call successors, (70) [2021-12-22 11:24:08,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 594 transitions. [2021-12-22 11:24:08,916 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 594 transitions. Word has length 153 [2021-12-22 11:24:08,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:08,916 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 594 transitions. [2021-12-22 11:24:08,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-22 11:24:08,917 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 594 transitions. [2021-12-22 11:24:08,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-22 11:24:08,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:08,919 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:24:08,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 11:24:08,919 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:08,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:08,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1838724051, now seen corresponding path program 1 times [2021-12-22 11:24:08,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:08,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62215468] [2021-12-22 11:24:08,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:08,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:08,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:08,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:08,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:08,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:08,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:09,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:24:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:09,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-22 11:24:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 11:24:09,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:09,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:24:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:09,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 11:24:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:09,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 11:24:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:09,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 11:24:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:09,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 11:24:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:09,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 11:24:09,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:09,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 11:24:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:09,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:09,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-22 11:24:09,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:09,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-22 11:24:09,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:09,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62215468] [2021-12-22 11:24:09,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62215468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:09,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:24:09,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 11:24:09,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460074083] [2021-12-22 11:24:09,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:09,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 11:24:09,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:09,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 11:24:09,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-22 11:24:09,058 INFO L87 Difference]: Start difference. First operand 394 states and 594 transitions. Second operand has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-22 11:24:10,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:10,596 INFO L93 Difference]: Finished difference Result 873 states and 1318 transitions. [2021-12-22 11:24:10,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 11:24:10,596 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 154 [2021-12-22 11:24:10,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:10,598 INFO L225 Difference]: With dead ends: 873 [2021-12-22 11:24:10,599 INFO L226 Difference]: Without dead ends: 506 [2021-12-22 11:24:10,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 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 11:24:10,600 INFO L933 BasicCegarLoop]: 514 mSDtfsCounter, 1383 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 2756 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1383 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 3244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 2756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:10,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1383 Valid, 1996 Invalid, 3244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 2756 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-22 11:24:10,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2021-12-22 11:24:10,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 394. [2021-12-22 11:24:10,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 304 states have (on average 1.5164473684210527) internal successors, (461), 310 states have internal predecessors, (461), 63 states have call successors, (63), 23 states have call predecessors, (63), 26 states have return successors, (69), 62 states have call predecessors, (69), 62 states have call successors, (69) [2021-12-22 11:24:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 593 transitions. [2021-12-22 11:24:10,617 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 593 transitions. Word has length 154 [2021-12-22 11:24:10,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:10,617 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 593 transitions. [2021-12-22 11:24:10,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.636363636363637) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-22 11:24:10,617 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 593 transitions. [2021-12-22 11:24:10,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-22 11:24:10,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:10,619 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, 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 11:24:10,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 11:24:10,619 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1163324813, now seen corresponding path program 2 times [2021-12-22 11:24:10,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:10,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815214777] [2021-12-22 11:24:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:10,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:10,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:24:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-22 11:24:10,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:24:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 11:24:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 11:24:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 11:24:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 11:24:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 11:24:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 11:24:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 11:24:10,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-22 11:24:10,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:10,726 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-22 11:24:10,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:10,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815214777] [2021-12-22 11:24:10,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815214777] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:10,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:24:10,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 11:24:10,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590131714] [2021-12-22 11:24:10,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:10,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 11:24:10,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:10,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 11:24:10,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-22 11:24:10,728 INFO L87 Difference]: Start difference. First operand 394 states and 593 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-22 11:24:12,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:12,174 INFO L93 Difference]: Finished difference Result 875 states and 1324 transitions. [2021-12-22 11:24:12,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 11:24:12,174 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 155 [2021-12-22 11:24:12,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:12,177 INFO L225 Difference]: With dead ends: 875 [2021-12-22 11:24:12,177 INFO L226 Difference]: Without dead ends: 508 [2021-12-22 11:24:12,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 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 11:24:12,181 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 1354 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 467 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 3322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 467 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:12,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1354 Valid, 2019 Invalid, 3322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [467 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-22 11:24:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-12-22 11:24:12,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 396. [2021-12-22 11:24:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 305 states have (on average 1.5147540983606558) internal successors, (462), 312 states have internal predecessors, (462), 63 states have call successors, (63), 23 states have call predecessors, (63), 27 states have return successors, (74), 62 states have call predecessors, (74), 62 states have call successors, (74) [2021-12-22 11:24:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 599 transitions. [2021-12-22 11:24:12,218 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 599 transitions. Word has length 155 [2021-12-22 11:24:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:12,219 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 599 transitions. [2021-12-22 11:24:12,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-22 11:24:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 599 transitions. [2021-12-22 11:24:12,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-22 11:24:12,222 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:12,222 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, 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] [2021-12-22 11:24:12,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 11:24:12,222 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:12,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:12,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1415791506, now seen corresponding path program 1 times [2021-12-22 11:24:12,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:12,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142185751] [2021-12-22 11:24:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:12,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:12,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:12,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:24:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-22 11:24:12,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 11:24:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 11:24:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:24:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 11:24:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 11:24:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 11:24:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 11:24:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 11:24:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-22 11:24:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,375 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-22 11:24:12,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:12,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142185751] [2021-12-22 11:24:12,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142185751] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:24:12,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170631736] [2021-12-22 11:24:12,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:12,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:24:12,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:24:12,377 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 11:24:12,379 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 11:24:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:12,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 11:24:12,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:24:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 11:24:12,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 11:24:12,980 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 11:24:12,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [170631736] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 11:24:12,981 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 11:24:12,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2021-12-22 11:24:12,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546725552] [2021-12-22 11:24:12,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 11:24:12,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 11:24:12,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:12,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 11:24:12,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-12-22 11:24:12,983 INFO L87 Difference]: Start difference. First operand 396 states and 599 transitions. Second operand has 15 states, 14 states have (on average 11.0) internal successors, (154), 11 states have internal predecessors, (154), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2021-12-22 11:24:15,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:15,519 INFO L93 Difference]: Finished difference Result 1554 states and 2552 transitions. [2021-12-22 11:24:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 11:24:15,519 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 11.0) internal successors, (154), 11 states have internal predecessors, (154), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) Word has length 156 [2021-12-22 11:24:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:15,525 INFO L225 Difference]: With dead ends: 1554 [2021-12-22 11:24:15,525 INFO L226 Difference]: Without dead ends: 1189 [2021-12-22 11:24:15,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=811, Unknown=0, NotChecked=0, Total=992 [2021-12-22 11:24:15,527 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 3025 mSDsluCounter, 2878 mSDsCounter, 0 mSdLazyCounter, 4386 mSolverCounterSat, 1162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3027 SdHoareTripleChecker+Valid, 3540 SdHoareTripleChecker+Invalid, 5548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1162 IncrementalHoareTripleChecker+Valid, 4386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:15,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3027 Valid, 3540 Invalid, 5548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1162 Valid, 4386 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-22 11:24:15,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2021-12-22 11:24:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 724. [2021-12-22 11:24:15,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 569 states have (on average 1.569420035149385) internal successors, (893), 576 states have internal predecessors, (893), 127 states have call successors, (127), 23 states have call predecessors, (127), 27 states have return successors, (148), 126 states have call predecessors, (148), 126 states have call successors, (148) [2021-12-22 11:24:15,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1168 transitions. [2021-12-22 11:24:15,568 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1168 transitions. Word has length 156 [2021-12-22 11:24:15,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:15,568 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 1168 transitions. [2021-12-22 11:24:15,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 11.0) internal successors, (154), 11 states have internal predecessors, (154), 4 states have call successors, (39), 6 states have call predecessors, (39), 3 states have return successors, (32), 3 states have call predecessors, (32), 4 states have call successors, (32) [2021-12-22 11:24:15,568 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1168 transitions. [2021-12-22 11:24:15,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-22 11:24:15,571 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:15,571 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, 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 11:24:15,590 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 11:24:15,784 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 11:24:15,785 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:15,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:15,785 INFO L85 PathProgramCache]: Analyzing trace with hash 186218760, now seen corresponding path program 1 times [2021-12-22 11:24:15,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:15,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627860797] [2021-12-22 11:24:15,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:15,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:15,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:24:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-22 11:24:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 11:24:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 11:24:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 11:24:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 11:24:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-22 11:24:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 11:24:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 11:24:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 11:24:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-22 11:24:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 11:24:15,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:15,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627860797] [2021-12-22 11:24:15,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627860797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:15,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:24:15,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:24:15,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445854961] [2021-12-22 11:24:15,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:15,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:24:15,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:15,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:24:15,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:24:15,875 INFO L87 Difference]: Start difference. First operand 724 states and 1168 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:16,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:16,807 INFO L93 Difference]: Finished difference Result 1790 states and 2955 transitions. [2021-12-22 11:24:16,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:24:16,807 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 159 [2021-12-22 11:24:16,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:16,813 INFO L225 Difference]: With dead ends: 1790 [2021-12-22 11:24:16,813 INFO L226 Difference]: Without dead ends: 1144 [2021-12-22 11:24:16,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 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 11:24:16,816 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 1226 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:16,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1241 Valid, 1320 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [463 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 11:24:16,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1144 states. [2021-12-22 11:24:16,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1144 to 1024. [2021-12-22 11:24:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 805 states have (on average 1.5875776397515529) internal successors, (1278), 812 states have internal predecessors, (1278), 191 states have call successors, (191), 23 states have call predecessors, (191), 27 states have return successors, (222), 190 states have call predecessors, (222), 190 states have call successors, (222) [2021-12-22 11:24:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1691 transitions. [2021-12-22 11:24:16,887 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1691 transitions. Word has length 159 [2021-12-22 11:24:16,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:16,887 INFO L470 AbstractCegarLoop]: Abstraction has 1024 states and 1691 transitions. [2021-12-22 11:24:16,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:16,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1691 transitions. [2021-12-22 11:24:16,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-22 11:24:16,891 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:16,892 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:24:16,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 11:24:16,892 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash 234336042, now seen corresponding path program 1 times [2021-12-22 11:24:16,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:16,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196026726] [2021-12-22 11:24:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:16,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:16,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:16,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:16,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:24:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-22 11:24:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 11:24:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 11:24:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 11:24:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 11:24:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 11:24:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 11:24:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 11:24:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 11:24:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:16,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-22 11:24:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 11:24:16,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:16,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196026726] [2021-12-22 11:24:16,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196026726] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:16,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:24:16,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:24:16,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143322421] [2021-12-22 11:24:16,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:16,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:24:16,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:16,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:24:16,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:24:16,982 INFO L87 Difference]: Start difference. First operand 1024 states and 1691 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:18,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:18,006 INFO L93 Difference]: Finished difference Result 2530 states and 4235 transitions. [2021-12-22 11:24:18,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:24:18,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 160 [2021-12-22 11:24:18,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:18,019 INFO L225 Difference]: With dead ends: 2530 [2021-12-22 11:24:18,019 INFO L226 Difference]: Without dead ends: 1637 [2021-12-22 11:24:18,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 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 11:24:18,025 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 1309 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:18,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1324 Valid, 1266 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:24:18,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2021-12-22 11:24:18,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1517. [2021-12-22 11:24:18,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1517 states, 1203 states have (on average 1.5960099750623442) internal successors, (1920), 1210 states have internal predecessors, (1920), 286 states have call successors, (286), 23 states have call predecessors, (286), 27 states have return successors, (317), 285 states have call predecessors, (317), 285 states have call successors, (317) [2021-12-22 11:24:18,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1517 states to 1517 states and 2523 transitions. [2021-12-22 11:24:18,095 INFO L78 Accepts]: Start accepts. Automaton has 1517 states and 2523 transitions. Word has length 160 [2021-12-22 11:24:18,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:18,096 INFO L470 AbstractCegarLoop]: Abstraction has 1517 states and 2523 transitions. [2021-12-22 11:24:18,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:18,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1517 states and 2523 transitions. [2021-12-22 11:24:18,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-22 11:24:18,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:18,103 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, 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 11:24:18,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 11:24:18,104 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:18,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:18,104 INFO L85 PathProgramCache]: Analyzing trace with hash -79431914, now seen corresponding path program 1 times [2021-12-22 11:24:18,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:18,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249021000] [2021-12-22 11:24:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:18,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:18,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:24:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-22 11:24:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:24:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-22 11:24:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 11:24:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 11:24:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-22 11:24:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 11:24:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 11:24:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 11:24:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:18,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-22 11:24:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:18,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 11:24:18,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:18,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249021000] [2021-12-22 11:24:18,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249021000] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:18,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:24:18,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:24:18,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683900088] [2021-12-22 11:24:18,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:18,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:24:18,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:18,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:24:18,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:24:18,204 INFO L87 Difference]: Start difference. First operand 1517 states and 2523 transitions. Second operand has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:19,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:19,219 INFO L93 Difference]: Finished difference Result 3632 states and 6153 transitions. [2021-12-22 11:24:19,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:24:19,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 161 [2021-12-22 11:24:19,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:19,229 INFO L225 Difference]: With dead ends: 3632 [2021-12-22 11:24:19,229 INFO L226 Difference]: Without dead ends: 2381 [2021-12-22 11:24:19,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 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 11:24:19,234 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 1297 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 473 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1312 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 1247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 473 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:19,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1312 Valid, 1267 Invalid, 1247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [473 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 11:24:19,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2021-12-22 11:24:19,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2261. [2021-12-22 11:24:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1824 states have (on average 1.6025219298245614) internal successors, (2923), 1831 states have internal predecessors, (2923), 409 states have call successors, (409), 23 states have call predecessors, (409), 27 states have return successors, (456), 408 states have call predecessors, (456), 408 states have call successors, (456) [2021-12-22 11:24:19,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3788 transitions. [2021-12-22 11:24:19,358 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3788 transitions. Word has length 161 [2021-12-22 11:24:19,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:19,358 INFO L470 AbstractCegarLoop]: Abstraction has 2261 states and 3788 transitions. [2021-12-22 11:24:19,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.857142857142858) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:19,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3788 transitions. [2021-12-22 11:24:19,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-22 11:24:19,367 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:19,367 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, 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 11:24:19,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 11:24:19,367 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:19,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:19,368 INFO L85 PathProgramCache]: Analyzing trace with hash 905293323, now seen corresponding path program 1 times [2021-12-22 11:24:19,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:19,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547120301] [2021-12-22 11:24:19,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:19,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:19,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:19,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:19,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:19,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:19,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:24:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-22 11:24:19,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:24:19,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-22 11:24:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-22 11:24:19,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 11:24:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 11:24:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 11:24:19,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 11:24:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-22 11:24:19,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-22 11:24:19,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 11:24:19,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:19,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547120301] [2021-12-22 11:24:19,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547120301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:19,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:24:19,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:24:19,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056523195] [2021-12-22 11:24:19,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:19,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:24:19,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:19,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:24:19,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:24:19,457 INFO L87 Difference]: Start difference. First operand 2261 states and 3788 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:20,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:20,518 INFO L93 Difference]: Finished difference Result 5341 states and 9133 transitions. [2021-12-22 11:24:20,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:24:20,518 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 162 [2021-12-22 11:24:20,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:20,534 INFO L225 Difference]: With dead ends: 5341 [2021-12-22 11:24:20,534 INFO L226 Difference]: Without dead ends: 3565 [2021-12-22 11:24:20,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 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 11:24:20,539 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 1256 mSDsluCounter, 723 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 1259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:20,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1271 Valid, 1282 Invalid, 1259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 11:24:20,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2021-12-22 11:24:20,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 3445. [2021-12-22 11:24:20,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3445 states, 2829 states have (on average 1.6065747613997878) internal successors, (4545), 2836 states have internal predecessors, (4545), 588 states have call successors, (588), 23 states have call predecessors, (588), 27 states have return successors, (661), 587 states have call predecessors, (661), 587 states have call successors, (661) [2021-12-22 11:24:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3445 states to 3445 states and 5794 transitions. [2021-12-22 11:24:20,728 INFO L78 Accepts]: Start accepts. Automaton has 3445 states and 5794 transitions. Word has length 162 [2021-12-22 11:24:20,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:20,728 INFO L470 AbstractCegarLoop]: Abstraction has 3445 states and 5794 transitions. [2021-12-22 11:24:20,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:20,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3445 states and 5794 transitions. [2021-12-22 11:24:20,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-22 11:24:20,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:20,746 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, 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 11:24:20,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 11:24:20,746 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:20,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:20,747 INFO L85 PathProgramCache]: Analyzing trace with hash 332795602, now seen corresponding path program 1 times [2021-12-22 11:24:20,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:20,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195040825] [2021-12-22 11:24:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:20,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:20,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:20,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:24:20,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 11:24:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:24:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-22 11:24:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-22 11:24:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:24:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-22 11:24:20,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 11:24:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 11:24:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-22 11:24:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-22 11:24:20,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:20,824 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 11:24:20,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:20,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195040825] [2021-12-22 11:24:20,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195040825] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:20,825 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:24:20,825 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:24:20,825 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364988630] [2021-12-22 11:24:20,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:20,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:24:20,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:20,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:24:20,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:24:20,827 INFO L87 Difference]: Start difference. First operand 3445 states and 5794 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:21,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:21,831 INFO L93 Difference]: Finished difference Result 8414 states and 14449 transitions. [2021-12-22 11:24:21,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:24:21,831 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 163 [2021-12-22 11:24:21,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:21,855 INFO L225 Difference]: With dead ends: 8414 [2021-12-22 11:24:21,855 INFO L226 Difference]: Without dead ends: 5706 [2021-12-22 11:24:21,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 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 11:24:21,865 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 1302 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1317 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:21,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1317 Valid, 1319 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 11:24:21,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5706 states. [2021-12-22 11:24:22,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5706 to 5586. [2021-12-22 11:24:22,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5586 states, 4594 states have (on average 1.6001306051371353) internal successors, (7351), 4601 states have internal predecessors, (7351), 964 states have call successors, (964), 23 states have call predecessors, (964), 27 states have return successors, (1081), 963 states have call predecessors, (1081), 963 states have call successors, (1081) [2021-12-22 11:24:22,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 9396 transitions. [2021-12-22 11:24:22,235 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 9396 transitions. Word has length 163 [2021-12-22 11:24:22,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:22,235 INFO L470 AbstractCegarLoop]: Abstraction has 5586 states and 9396 transitions. [2021-12-22 11:24:22,236 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:22,236 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 9396 transitions. [2021-12-22 11:24:22,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-22 11:24:22,256 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:22,256 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, 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 11:24:22,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 11:24:22,256 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:22,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:22,258 INFO L85 PathProgramCache]: Analyzing trace with hash 286063183, now seen corresponding path program 1 times [2021-12-22 11:24:22,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:22,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394425627] [2021-12-22 11:24:22,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:22,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:24:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 11:24:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 11:24:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-22 11:24:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-22 11:24:22,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-22 11:24:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-22 11:24:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-22 11:24:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-22 11:24:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-22 11:24:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-22 11:24:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:22,352 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 11:24:22,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:22,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394425627] [2021-12-22 11:24:22,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394425627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:22,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:24:22,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:24:22,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943263014] [2021-12-22 11:24:22,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:22,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:24:22,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:22,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:24:22,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:24:22,354 INFO L87 Difference]: Start difference. First operand 5586 states and 9396 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:23,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:23,611 INFO L93 Difference]: Finished difference Result 13836 states and 23750 transitions. [2021-12-22 11:24:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:24:23,611 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 164 [2021-12-22 11:24:23,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:23,647 INFO L225 Difference]: With dead ends: 13836 [2021-12-22 11:24:23,647 INFO L226 Difference]: Without dead ends: 9389 [2021-12-22 11:24:23,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 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 11:24:23,660 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 1253 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1268 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:23,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1268 Valid, 1311 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 11:24:23,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9389 states. [2021-12-22 11:24:24,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9389 to 9269. [2021-12-22 11:24:24,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9269 states, 7671 states have (on average 1.5979663668361361) internal successors, (12258), 7678 states have internal predecessors, (12258), 1570 states have call successors, (1570), 23 states have call predecessors, (1570), 27 states have return successors, (1765), 1569 states have call predecessors, (1765), 1569 states have call successors, (1765) [2021-12-22 11:24:24,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9269 states to 9269 states and 15593 transitions. [2021-12-22 11:24:24,161 INFO L78 Accepts]: Start accepts. Automaton has 9269 states and 15593 transitions. Word has length 164 [2021-12-22 11:24:24,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:24,161 INFO L470 AbstractCegarLoop]: Abstraction has 9269 states and 15593 transitions. [2021-12-22 11:24:24,162 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:24,162 INFO L276 IsEmpty]: Start isEmpty. Operand 9269 states and 15593 transitions. [2021-12-22 11:24:24,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-22 11:24:24,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:24,194 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, 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 11:24:24,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 11:24:24,195 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:24,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:24,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1129149140, now seen corresponding path program 1 times [2021-12-22 11:24:24,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:24,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559965033] [2021-12-22 11:24:24,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:24,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:24:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-22 11:24:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 11:24:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-22 11:24:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-22 11:24:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-22 11:24:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-22 11:24:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-22 11:24:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-22 11:24:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-22 11:24:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-22 11:24:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:24,274 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 11:24:24,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:24,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559965033] [2021-12-22 11:24:24,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559965033] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:24,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:24:24,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:24:24,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610139960] [2021-12-22 11:24:24,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:24,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:24:24,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:24,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:24:24,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:24:24,277 INFO L87 Difference]: Start difference. First operand 9269 states and 15593 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:25,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:25,844 INFO L93 Difference]: Finished difference Result 24020 states and 41191 transitions. [2021-12-22 11:24:25,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:24:25,844 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2021-12-22 11:24:25,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:25,887 INFO L225 Difference]: With dead ends: 24020 [2021-12-22 11:24:25,888 INFO L226 Difference]: Without dead ends: 16342 [2021-12-22 11:24:25,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 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 11:24:25,907 INFO L933 BasicCegarLoop]: 577 mSDtfsCounter, 1220 mSDsluCounter, 739 mSDsCounter, 0 mSdLazyCounter, 813 mSolverCounterSat, 466 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1235 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 466 IncrementalHoareTripleChecker+Valid, 813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:25,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1235 Valid, 1316 Invalid, 1279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [466 Valid, 813 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 11:24:25,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16342 states. [2021-12-22 11:24:26,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16342 to 16222. [2021-12-22 11:24:26,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16222 states, 13421 states have (on average 1.5891513300052158) internal successors, (21328), 13428 states have internal predecessors, (21328), 2773 states have call successors, (2773), 23 states have call predecessors, (2773), 27 states have return successors, (3112), 2772 states have call predecessors, (3112), 2772 states have call successors, (3112) [2021-12-22 11:24:26,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16222 states to 16222 states and 27213 transitions. [2021-12-22 11:24:26,708 INFO L78 Accepts]: Start accepts. Automaton has 16222 states and 27213 transitions. Word has length 165 [2021-12-22 11:24:26,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:26,709 INFO L470 AbstractCegarLoop]: Abstraction has 16222 states and 27213 transitions. [2021-12-22 11:24:26,709 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:26,709 INFO L276 IsEmpty]: Start isEmpty. Operand 16222 states and 27213 transitions. [2021-12-22 11:24:26,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-22 11:24:26,748 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:26,748 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:24:26,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 11:24:26,748 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:26,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:26,749 INFO L85 PathProgramCache]: Analyzing trace with hash -599595824, now seen corresponding path program 1 times [2021-12-22 11:24:26,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:26,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123706599] [2021-12-22 11:24:26,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:26,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:24:26,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-22 11:24:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-22 11:24:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-22 11:24:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-22 11:24:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-22 11:24:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-22 11:24:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-22 11:24:26,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-22 11:24:26,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-22 11:24:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:26,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-22 11:24:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:26,842 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 11:24:26,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:26,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123706599] [2021-12-22 11:24:26,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123706599] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:26,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:24:26,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:24:26,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651400114] [2021-12-22 11:24:26,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:26,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:24:26,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:26,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:24:26,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:24:26,845 INFO L87 Difference]: Start difference. First operand 16222 states and 27213 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:28,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:28,963 INFO L93 Difference]: Finished difference Result 42986 states and 73588 transitions. [2021-12-22 11:24:28,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:24:28,963 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2021-12-22 11:24:28,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:29,074 INFO L225 Difference]: With dead ends: 42986 [2021-12-22 11:24:29,074 INFO L226 Difference]: Without dead ends: 28997 [2021-12-22 11:24:29,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 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 11:24:29,118 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 1290 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:29,118 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1305 Valid, 1269 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 11:24:29,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28997 states. [2021-12-22 11:24:30,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28997 to 28877. [2021-12-22 11:24:30,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28877 states, 24037 states have (on average 1.5848483587802138) internal successors, (38095), 24044 states have internal predecessors, (38095), 4812 states have call successors, (4812), 23 states have call predecessors, (4812), 27 states have return successors, (5425), 4811 states have call predecessors, (5425), 4811 states have call successors, (5425) [2021-12-22 11:24:30,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28877 states to 28877 states and 48332 transitions. [2021-12-22 11:24:30,715 INFO L78 Accepts]: Start accepts. Automaton has 28877 states and 48332 transitions. Word has length 166 [2021-12-22 11:24:30,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:30,716 INFO L470 AbstractCegarLoop]: Abstraction has 28877 states and 48332 transitions. [2021-12-22 11:24:30,716 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:30,716 INFO L276 IsEmpty]: Start isEmpty. Operand 28877 states and 48332 transitions. [2021-12-22 11:24:30,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-12-22 11:24:30,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:30,776 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, 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 11:24:30,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 11:24:30,776 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:30,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:30,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1477748938, now seen corresponding path program 1 times [2021-12-22 11:24:30,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:30,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967713896] [2021-12-22 11:24:30,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:30,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:30,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:30,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:30,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:24:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-22 11:24:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-22 11:24:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 11:24:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-22 11:24:30,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-22 11:24:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-22 11:24:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-22 11:24:30,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-22 11:24:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-22 11:24:30,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-22 11:24:30,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:30,877 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 11:24:30,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:30,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967713896] [2021-12-22 11:24:30,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967713896] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:30,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:24:30,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:24:30,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640919964] [2021-12-22 11:24:30,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:30,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:24:30,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:30,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:24:30,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:24:30,880 INFO L87 Difference]: Start difference. First operand 28877 states and 48332 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:33,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:33,978 INFO L93 Difference]: Finished difference Result 78748 states and 133952 transitions. [2021-12-22 11:24:33,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:24:33,979 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 167 [2021-12-22 11:24:33,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:34,186 INFO L225 Difference]: With dead ends: 78748 [2021-12-22 11:24:34,186 INFO L226 Difference]: Without dead ends: 52876 [2021-12-22 11:24:34,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 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 11:24:34,259 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 1307 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 486 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 486 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:34,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1322 Valid, 1256 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [486 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-22 11:24:34,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52876 states. [2021-12-22 11:24:36,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52876 to 52756. [2021-12-22 11:24:36,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52756 states, 44201 states have (on average 1.5791045451460375) internal successors, (69798), 44208 states have internal predecessors, (69798), 8527 states have call successors, (8527), 23 states have call predecessors, (8527), 27 states have return successors, (9672), 8526 states have call predecessors, (9672), 8526 states have call successors, (9672) [2021-12-22 11:24:37,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52756 states to 52756 states and 87997 transitions. [2021-12-22 11:24:37,135 INFO L78 Accepts]: Start accepts. Automaton has 52756 states and 87997 transitions. Word has length 167 [2021-12-22 11:24:37,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:37,135 INFO L470 AbstractCegarLoop]: Abstraction has 52756 states and 87997 transitions. [2021-12-22 11:24:37,135 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 52756 states and 87997 transitions. [2021-12-22 11:24:37,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-22 11:24:37,223 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:37,223 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:24:37,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 11:24:37,224 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:37,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:37,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1740429296, now seen corresponding path program 1 times [2021-12-22 11:24:37,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:37,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350540001] [2021-12-22 11:24:37,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:37,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:24:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 11:24:37,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-22 11:24:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-22 11:24:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-22 11:24:37,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-22 11:24:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-22 11:24:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-22 11:24:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-22 11:24:37,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-22 11:24:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-22 11:24:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-22 11:24:37,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:37,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350540001] [2021-12-22 11:24:37,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350540001] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 11:24:37,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 11:24:37,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 11:24:37,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545332826] [2021-12-22 11:24:37,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 11:24:37,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 11:24:37,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:37,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 11:24:37,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 11:24:37,329 INFO L87 Difference]: Start difference. First operand 52756 states and 87997 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:42,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 11:24:42,074 INFO L93 Difference]: Finished difference Result 98519 states and 167882 transitions. [2021-12-22 11:24:42,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 11:24:42,074 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 168 [2021-12-22 11:24:42,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 11:24:42,586 INFO L225 Difference]: With dead ends: 98519 [2021-12-22 11:24:42,586 INFO L226 Difference]: Without dead ends: 98335 [2021-12-22 11:24:42,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 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 11:24:42,620 INFO L933 BasicCegarLoop]: 541 mSDtfsCounter, 1293 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 11:24:42,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 1265 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 11:24:42,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98335 states. [2021-12-22 11:24:47,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98335 to 98215. [2021-12-22 11:24:47,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98215 states, 82861 states have (on average 1.5718492415008267) internal successors, (130245), 82868 states have internal predecessors, (130245), 15326 states have call successors, (15326), 23 states have call predecessors, (15326), 27 states have return successors, (17517), 15325 states have call predecessors, (17517), 15325 states have call successors, (17517) [2021-12-22 11:24:47,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98215 states to 98215 states and 163088 transitions. [2021-12-22 11:24:47,888 INFO L78 Accepts]: Start accepts. Automaton has 98215 states and 163088 transitions. Word has length 168 [2021-12-22 11:24:47,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 11:24:47,888 INFO L470 AbstractCegarLoop]: Abstraction has 98215 states and 163088 transitions. [2021-12-22 11:24:47,888 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, (19), 6 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-22 11:24:47,888 INFO L276 IsEmpty]: Start isEmpty. Operand 98215 states and 163088 transitions. [2021-12-22 11:24:47,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-22 11:24:47,996 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 11:24:47,996 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 11:24:47,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 11:24:47,996 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 11:24:47,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 11:24:47,997 INFO L85 PathProgramCache]: Analyzing trace with hash -576665547, now seen corresponding path program 1 times [2021-12-22 11:24:47,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 11:24:47,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058612938] [2021-12-22 11:24:47,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:47,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 11:24:48,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 11:24:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 11:24:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-22 11:24:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 11:24:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-22 11:24:48,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 11:24:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 11:24:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-22 11:24:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-22 11:24:48,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-22 11:24:48,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-22 11:24:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-22 11:24:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-22 11:24:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-22 11:24:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-22 11:24:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-22 11:24:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 11:24:48,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,194 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-22 11:24:48,194 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 11:24:48,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058612938] [2021-12-22 11:24:48,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058612938] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 11:24:48,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541971097] [2021-12-22 11:24:48,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 11:24:48,195 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 11:24:48,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 11:24:48,212 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 11:24:48,212 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 11:24:48,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 11:24:48,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-22 11:24:48,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 11:24:49,014 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-22 11:24:49,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 11:24:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-22 11:24:49,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541971097] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 11:24:49,503 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 11:24:49,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2021-12-22 11:24:49,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26742204] [2021-12-22 11:24:49,503 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 11:24:49,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-22 11:24:49,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 11:24:49,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-22 11:24:49,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2021-12-22 11:24:49,505 INFO L87 Difference]: Start difference. First operand 98215 states and 163088 transitions. Second operand has 32 states, 30 states have (on average 8.533333333333333) internal successors, (256), 24 states have internal predecessors, (256), 9 states have call successors, (50), 12 states have call predecessors, (50), 12 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44)