/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec11_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:21:02,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:21:02,178 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:21:02,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:21:02,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:21:02,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:21:02,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:21:02,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:21:02,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:21:02,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:21:02,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:21:02,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:21:02,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:21:02,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:21:02,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:21:02,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:21:02,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:21:02,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:21:02,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:21:02,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:21:02,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:21:02,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:21:02,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:21:02,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:21:02,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:21:02,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:21:02,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:21:02,271 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:21:02,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:21:02,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:21:02,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:21:02,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:21:02,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:21:02,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:21:02,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:21:02,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:21:02,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:21:02,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:21:02,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:21:02,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:21:02,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:21:02,279 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:21:02,315 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:21:02,316 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:21:02,316 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:21:02,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:21:02,317 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:21:02,317 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:21:02,318 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:21:02,318 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:21:02,318 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:21:02,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:21:02,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:21:02,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:21:02,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:21:02,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:21:02,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:21:02,319 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:21:02,319 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:21:02,320 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:21:02,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:21:02,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:21:02,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:21:02,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:21:02,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:21:02,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:21:02,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:21:02,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:21:02,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:21:02,322 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:21:02,322 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:21:02,322 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:21:02,322 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:21:02,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:21:02,323 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:21:02,323 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:21:02,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:21:02,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:21:02,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:21:02,596 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:21:02,597 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:21:02,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec11_product33.cil.c [2022-01-10 06:21:02,648 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f828ffb73/b527e7e792be4a1e9bf7904790cc066f/FLAG7dc1ec7ad [2022-01-10 06:21:03,086 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:21:03,087 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product33.cil.c [2022-01-10 06:21:03,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f828ffb73/b527e7e792be4a1e9bf7904790cc066f/FLAG7dc1ec7ad [2022-01-10 06:21:03,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f828ffb73/b527e7e792be4a1e9bf7904790cc066f [2022-01-10 06:21:03,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:21:03,407 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:21:03,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:21:03,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:21:03,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:21:03,412 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:21:03" (1/1) ... [2022-01-10 06:21:03,413 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccee57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:03, skipping insertion in model container [2022-01-10 06:21:03,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:21:03" (1/1) ... [2022-01-10 06:21:03,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:21:03,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:21:04,020 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product33.cil.c[64763,64776] [2022-01-10 06:21:04,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:21:04,043 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:21:04,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:21:04,163 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product33.cil.c[64763,64776] [2022-01-10 06:21:04,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:21:04,173 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:21:04,259 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec11_product33.cil.c[64763,64776] [2022-01-10 06:21:04,260 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:21:04,296 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:21:04,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:04 WrapperNode [2022-01-10 06:21:04,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:21:04,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:21:04,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:21:04,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:21:04,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:04" (1/1) ... [2022-01-10 06:21:04,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:04" (1/1) ... [2022-01-10 06:21:04,436 INFO L137 Inliner]: procedures = 136, calls = 227, calls flagged for inlining = 65, calls inlined = 60, statements flattened = 1005 [2022-01-10 06:21:04,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:21:04,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:21:04,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:21:04,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:21:04,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:04" (1/1) ... [2022-01-10 06:21:04,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:04" (1/1) ... [2022-01-10 06:21:04,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:04" (1/1) ... [2022-01-10 06:21:04,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:04" (1/1) ... [2022-01-10 06:21:04,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:04" (1/1) ... [2022-01-10 06:21:04,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:04" (1/1) ... [2022-01-10 06:21:04,512 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:04" (1/1) ... [2022-01-10 06:21:04,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:21:04,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:21:04,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:21:04,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:21:04,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:04" (1/1) ... [2022-01-10 06:21:04,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:21:04,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:21:04,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 06:21:04,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 06:21:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-01-10 06:21:04,595 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-01-10 06:21:04,595 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-01-10 06:21:04,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-01-10 06:21:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-01-10 06:21:04,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-01-10 06:21:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-01-10 06:21:04,596 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-01-10 06:21:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-01-10 06:21:04,596 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-01-10 06:21:04,596 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-01-10 06:21:04,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-01-10 06:21:04,597 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-01-10 06:21:04,597 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-01-10 06:21:04,597 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-01-10 06:21:04,597 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-01-10 06:21:04,597 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-01-10 06:21:04,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-01-10 06:21:04,597 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-01-10 06:21:04,597 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-01-10 06:21:04,597 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 06:21:04,597 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-01-10 06:21:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-01-10 06:21:04,598 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-01-10 06:21:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-01-10 06:21:04,598 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-01-10 06:21:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-01-10 06:21:04,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:21:04,598 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-01-10 06:21:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-01-10 06:21:04,598 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-01-10 06:21:04,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-01-10 06:21:04,599 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-01-10 06:21:04,599 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-01-10 06:21:04,599 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-01-10 06:21:04,599 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-01-10 06:21:04,599 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-01-10 06:21:04,599 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-01-10 06:21:04,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:21:04,599 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-01-10 06:21:04,599 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-01-10 06:21:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-01-10 06:21:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-01-10 06:21:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-01-10 06:21:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-01-10 06:21:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-01-10 06:21:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-01-10 06:21:04,600 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-01-10 06:21:04,600 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-01-10 06:21:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-01-10 06:21:04,601 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-01-10 06:21:04,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:21:04,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:21:04,848 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:21:04,850 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:21:05,587 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:21:05,604 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:21:05,605 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:21:05,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:21:05 BoogieIcfgContainer [2022-01-10 06:21:05,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:21:05,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:21:05,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:21:05,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:21:05,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:21:03" (1/3) ... [2022-01-10 06:21:05,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf3dd3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:21:05, skipping insertion in model container [2022-01-10 06:21:05,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:21:04" (2/3) ... [2022-01-10 06:21:05,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf3dd3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:21:05, skipping insertion in model container [2022-01-10 06:21:05,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:21:05" (3/3) ... [2022-01-10 06:21:05,620 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec11_product33.cil.c [2022-01-10 06:21:05,624 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:21:05,624 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:21:05,688 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:21:05,695 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 [2022-01-10 06:21:05,695 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:21:05,729 INFO L276 IsEmpty]: Start isEmpty. Operand has 385 states, 297 states have (on average 1.5016835016835017) internal successors, (446), 301 states have internal predecessors, (446), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-10 06:21:05,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-10 06:21:05,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:05,747 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] [2022-01-10 06:21:05,747 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:05,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:05,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1565848355, now seen corresponding path program 1 times [2022-01-10 06:21:05,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:05,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806717985] [2022-01-10 06:21:05,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:05,765 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:05,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:05,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:05,769 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:21:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:06,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:21:06,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:06,461 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-10 06:21:06,461 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:06,462 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:06,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806717985] [2022-01-10 06:21:06,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806717985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:06,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:06,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:21:06,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204764792] [2022-01-10 06:21:06,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:06,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:21:06,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:06,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:21:06,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:21:06,493 INFO L87 Difference]: Start difference. First operand has 385 states, 297 states have (on average 1.5016835016835017) internal successors, (446), 301 states have internal predecessors, (446), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) 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) [2022-01-10 06:21:06,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:06,558 INFO L93 Difference]: Finished difference Result 611 states and 886 transitions. [2022-01-10 06:21:06,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:21:06,565 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 [2022-01-10 06:21:06,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:06,577 INFO L225 Difference]: With dead ends: 611 [2022-01-10 06:21:06,577 INFO L226 Difference]: Without dead ends: 378 [2022-01-10 06:21:06,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:21:06,587 INFO L933 BasicCegarLoop]: 566 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, 566 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:06,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:06,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-01-10 06:21:06,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2022-01-10 06:21:06,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 291 states have (on average 1.4948453608247423) internal successors, (435), 294 states have internal predecessors, (435), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-01-10 06:21:06,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 558 transitions. [2022-01-10 06:21:06,656 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 558 transitions. Word has length 139 [2022-01-10 06:21:06,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:06,658 INFO L470 AbstractCegarLoop]: Abstraction has 378 states and 558 transitions. [2022-01-10 06:21:06,658 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) [2022-01-10 06:21:06,658 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 558 transitions. [2022-01-10 06:21:06,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-10 06:21:06,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:06,664 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] [2022-01-10 06:21:06,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:06,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:06,877 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:06,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:06,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1479941590, now seen corresponding path program 1 times [2022-01-10 06:21:06,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:06,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943224947] [2022-01-10 06:21:06,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:06,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:06,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:06,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:06,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:21:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:07,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:21:07,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-10 06:21:07,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:07,560 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:07,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943224947] [2022-01-10 06:21:07,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943224947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:07,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:07,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:21:07,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178024764] [2022-01-10 06:21:07,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:07,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:07,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:07,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:07,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:07,563 INFO L87 Difference]: Start difference. First operand 378 states and 558 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 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) [2022-01-10 06:21:07,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:07,675 INFO L93 Difference]: Finished difference Result 747 states and 1106 transitions. [2022-01-10 06:21:07,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:21:07,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 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 140 [2022-01-10 06:21:07,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:07,681 INFO L225 Difference]: With dead ends: 747 [2022-01-10 06:21:07,681 INFO L226 Difference]: Without dead ends: 380 [2022-01-10 06:21:07,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:21:07,686 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 133 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 2044 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 [2022-01-10 06:21:07,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 2044 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:07,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-01-10 06:21:07,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2022-01-10 06:21:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 292 states have (on average 1.4931506849315068) internal successors, (436), 296 states have internal predecessors, (436), 62 states have call successors, (62), 24 states have call predecessors, (62), 25 states have return successors, (63), 61 states have call predecessors, (63), 61 states have call successors, (63) [2022-01-10 06:21:07,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 561 transitions. [2022-01-10 06:21:07,728 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 561 transitions. Word has length 140 [2022-01-10 06:21:07,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:07,728 INFO L470 AbstractCegarLoop]: Abstraction has 380 states and 561 transitions. [2022-01-10 06:21:07,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 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) [2022-01-10 06:21:07,729 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 561 transitions. [2022-01-10 06:21:07,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-01-10 06:21:07,732 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:07,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:21:07,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:07,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:07,946 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:07,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:07,946 INFO L85 PathProgramCache]: Analyzing trace with hash -824255159, now seen corresponding path program 1 times [2022-01-10 06:21:07,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:07,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242893270] [2022-01-10 06:21:07,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:07,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:07,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:07,949 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:07,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:21:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:08,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 630 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:21:08,240 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:08,464 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-10 06:21:08,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:08,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:08,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242893270] [2022-01-10 06:21:08,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242893270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:08,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:08,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:21:08,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432841143] [2022-01-10 06:21:08,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:08,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:08,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:08,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:08,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:08,473 INFO L87 Difference]: Start difference. First operand 380 states and 561 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2022-01-10 06:21:08,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:08,558 INFO L93 Difference]: Finished difference Result 749 states and 1110 transitions. [2022-01-10 06:21:08,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:21:08,559 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 141 [2022-01-10 06:21:08,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:08,563 INFO L225 Difference]: With dead ends: 749 [2022-01-10 06:21:08,563 INFO L226 Difference]: Without dead ends: 382 [2022-01-10 06:21:08,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:21:08,568 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 132 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 2033 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 [2022-01-10 06:21:08,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 2033 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:08,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-01-10 06:21:08,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-01-10 06:21:08,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 293 states have (on average 1.4914675767918089) internal successors, (437), 298 states have internal predecessors, (437), 62 states have call successors, (62), 24 states have call predecessors, (62), 26 states have return successors, (67), 61 states have call predecessors, (67), 61 states have call successors, (67) [2022-01-10 06:21:08,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 566 transitions. [2022-01-10 06:21:08,601 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 566 transitions. Word has length 141 [2022-01-10 06:21:08,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:08,602 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 566 transitions. [2022-01-10 06:21:08,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2022-01-10 06:21:08,602 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 566 transitions. [2022-01-10 06:21:08,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-10 06:21:08,604 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:08,605 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] [2022-01-10 06:21:08,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:08,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:08,819 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:08,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:08,819 INFO L85 PathProgramCache]: Analyzing trace with hash -2015273453, now seen corresponding path program 1 times [2022-01-10 06:21:08,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:08,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132727496] [2022-01-10 06:21:08,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:08,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:08,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:08,822 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:08,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:21:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:09,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:21:09,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:09,315 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 06:21:09,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:09,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:09,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132727496] [2022-01-10 06:21:09,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132727496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:09,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:09,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:21:09,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712055407] [2022-01-10 06:21:09,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:09,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:09,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:09,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:09,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:09,317 INFO L87 Difference]: Start difference. First operand 382 states and 566 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2022-01-10 06:21:09,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:09,375 INFO L93 Difference]: Finished difference Result 741 states and 1100 transitions. [2022-01-10 06:21:09,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:21:09,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 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 142 [2022-01-10 06:21:09,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:09,378 INFO L225 Difference]: With dead ends: 741 [2022-01-10 06:21:09,378 INFO L226 Difference]: Without dead ends: 382 [2022-01-10 06:21:09,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:21:09,381 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 131 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 2047 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:09,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 2047 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:09,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-01-10 06:21:09,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2022-01-10 06:21:09,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 293 states have (on average 1.4914675767918089) internal successors, (437), 298 states have internal predecessors, (437), 62 states have call successors, (62), 24 states have call predecessors, (62), 26 states have return successors, (66), 61 states have call predecessors, (66), 61 states have call successors, (66) [2022-01-10 06:21:09,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 565 transitions. [2022-01-10 06:21:09,397 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 565 transitions. Word has length 142 [2022-01-10 06:21:09,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:09,397 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 565 transitions. [2022-01-10 06:21:09,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 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) [2022-01-10 06:21:09,398 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 565 transitions. [2022-01-10 06:21:09,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-10 06:21:09,400 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:09,400 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] [2022-01-10 06:21:09,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:09,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:09,614 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:09,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:09,614 INFO L85 PathProgramCache]: Analyzing trace with hash 898347668, now seen corresponding path program 2 times [2022-01-10 06:21:09,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:09,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442671289] [2022-01-10 06:21:09,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:21:09,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:09,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:09,616 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:09,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:21:09,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:21:09,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:21:09,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:09,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:10,002 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-01-10 06:21:10,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:10,002 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:10,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442671289] [2022-01-10 06:21:10,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442671289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:10,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:10,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:10,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114958396] [2022-01-10 06:21:10,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:10,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:10,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:10,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:10,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:10,008 INFO L87 Difference]: Start difference. First operand 382 states and 565 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (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) [2022-01-10 06:21:10,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:10,028 INFO L93 Difference]: Finished difference Result 605 states and 874 transitions. [2022-01-10 06:21:10,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:10,029 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (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 143 [2022-01-10 06:21:10,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:10,033 INFO L225 Difference]: With dead ends: 605 [2022-01-10 06:21:10,034 INFO L226 Difference]: Without dead ends: 385 [2022-01-10 06:21:10,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:10,035 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 1 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1110 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:10,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1110 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:10,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-01-10 06:21:10,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 384. [2022-01-10 06:21:10,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 295 states have (on average 1.488135593220339) internal successors, (439), 300 states have internal predecessors, (439), 62 states have call successors, (62), 24 states have call predecessors, (62), 26 states have return successors, (66), 61 states have call predecessors, (66), 61 states have call successors, (66) [2022-01-10 06:21:10,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 567 transitions. [2022-01-10 06:21:10,058 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 567 transitions. Word has length 143 [2022-01-10 06:21:10,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:10,059 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 567 transitions. [2022-01-10 06:21:10,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (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) [2022-01-10 06:21:10,060 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 567 transitions. [2022-01-10 06:21:10,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-01-10 06:21:10,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:10,062 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] [2022-01-10 06:21:10,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:10,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:10,274 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:10,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:10,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1681302114, now seen corresponding path program 1 times [2022-01-10 06:21:10,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:10,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1399927414] [2022-01-10 06:21:10,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:10,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:10,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:10,277 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:10,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:21:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:10,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:21:10,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:10,781 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-01-10 06:21:10,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:10,781 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:10,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1399927414] [2022-01-10 06:21:10,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1399927414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:10,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:10,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:21:10,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670916530] [2022-01-10 06:21:10,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:10,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:10,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:10,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:10,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:10,783 INFO L87 Difference]: Start difference. First operand 384 states and 567 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 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) [2022-01-10 06:21:10,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:10,839 INFO L93 Difference]: Finished difference Result 747 states and 1107 transitions. [2022-01-10 06:21:10,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:21:10,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 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 152 [2022-01-10 06:21:10,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:10,843 INFO L225 Difference]: With dead ends: 747 [2022-01-10 06:21:10,843 INFO L226 Difference]: Without dead ends: 386 [2022-01-10 06:21:10,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:21:10,845 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 129 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:10,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 2049 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:10,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-01-10 06:21:10,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2022-01-10 06:21:10,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 296 states have (on average 1.4864864864864864) internal successors, (440), 302 states have internal predecessors, (440), 62 states have call successors, (62), 24 states have call predecessors, (62), 27 states have return successors, (68), 61 states have call predecessors, (68), 61 states have call successors, (68) [2022-01-10 06:21:10,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 570 transitions. [2022-01-10 06:21:10,858 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 570 transitions. Word has length 152 [2022-01-10 06:21:10,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:10,858 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 570 transitions. [2022-01-10 06:21:10,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 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) [2022-01-10 06:21:10,859 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 570 transitions. [2022-01-10 06:21:10,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-01-10 06:21:10,861 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:10,861 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] [2022-01-10 06:21:10,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:11,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:11,075 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:11,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:11,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1312789604, now seen corresponding path program 1 times [2022-01-10 06:21:11,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:11,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [650493201] [2022-01-10 06:21:11,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:11,077 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:11,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:11,078 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:11,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:21:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:11,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:21:11,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:11,556 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:21:11,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:11,556 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:11,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [650493201] [2022-01-10 06:21:11,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [650493201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:11,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:11,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:21:11,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978681792] [2022-01-10 06:21:11,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:11,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:11,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:11,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:11,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:11,558 INFO L87 Difference]: Start difference. First operand 386 states and 570 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 06:21:11,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:11,626 INFO L93 Difference]: Finished difference Result 745 states and 1102 transitions. [2022-01-10 06:21:11,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:21:11,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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 153 [2022-01-10 06:21:11,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:11,630 INFO L225 Difference]: With dead ends: 745 [2022-01-10 06:21:11,630 INFO L226 Difference]: Without dead ends: 386 [2022-01-10 06:21:11,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:21:11,632 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 130 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 2036 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:11,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 2036 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:11,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-01-10 06:21:11,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2022-01-10 06:21:11,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 296 states have (on average 1.4864864864864864) internal successors, (440), 302 states have internal predecessors, (440), 62 states have call successors, (62), 24 states have call predecessors, (62), 27 states have return successors, (67), 61 states have call predecessors, (67), 61 states have call successors, (67) [2022-01-10 06:21:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 569 transitions. [2022-01-10 06:21:11,653 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 569 transitions. Word has length 153 [2022-01-10 06:21:11,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:11,653 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 569 transitions. [2022-01-10 06:21:11,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 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) [2022-01-10 06:21:11,654 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 569 transitions. [2022-01-10 06:21:11,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-10 06:21:11,656 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:11,656 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] [2022-01-10 06:21:11,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:11,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:11,869 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:11,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:11,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1444576212, now seen corresponding path program 2 times [2022-01-10 06:21:11,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:11,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307201270] [2022-01-10 06:21:11,870 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:21:11,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:11,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:11,871 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:11,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:21:12,134 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:21:12,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:21:12,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-10 06:21:12,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 06:21:12,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:21:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-01-10 06:21:12,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:12,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307201270] [2022-01-10 06:21:12,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307201270] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:21:12,985 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:21:12,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-01-10 06:21:12,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539959584] [2022-01-10 06:21:12,986 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:21:12,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-10 06:21:12,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:12,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-10 06:21:12,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-10 06:21:12,987 INFO L87 Difference]: Start difference. First operand 386 states and 569 transitions. Second operand has 16 states, 16 states have (on average 10.25) internal successors, (164), 14 states have internal predecessors, (164), 4 states have call successors, (36), 6 states have call predecessors, (36), 9 states have return successors, (33), 6 states have call predecessors, (33), 4 states have call successors, (33) [2022-01-10 06:21:17,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:17,703 INFO L93 Difference]: Finished difference Result 1330 states and 1966 transitions. [2022-01-10 06:21:17,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-10 06:21:17,704 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 14 states have internal predecessors, (164), 4 states have call successors, (36), 6 states have call predecessors, (36), 9 states have return successors, (33), 6 states have call predecessors, (33), 4 states have call successors, (33) Word has length 154 [2022-01-10 06:21:17,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:17,710 INFO L225 Difference]: With dead ends: 1330 [2022-01-10 06:21:17,711 INFO L226 Difference]: Without dead ends: 1116 [2022-01-10 06:21:17,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2022-01-10 06:21:17,713 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 2211 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 5619 mSolverCounterSat, 831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 6450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 5619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:17,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2274 Valid, 3185 Invalid, 6450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [831 Valid, 5619 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-01-10 06:21:17,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-01-10 06:21:17,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 769. [2022-01-10 06:21:17,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 591 states have (on average 1.490693739424704) internal successors, (881), 600 states have internal predecessors, (881), 122 states have call successors, (122), 49 states have call predecessors, (122), 55 states have return successors, (135), 123 states have call predecessors, (135), 120 states have call successors, (135) [2022-01-10 06:21:17,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1138 transitions. [2022-01-10 06:21:17,753 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1138 transitions. Word has length 154 [2022-01-10 06:21:17,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:17,754 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 1138 transitions. [2022-01-10 06:21:17,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 10.25) internal successors, (164), 14 states have internal predecessors, (164), 4 states have call successors, (36), 6 states have call predecessors, (36), 9 states have return successors, (33), 6 states have call predecessors, (33), 4 states have call successors, (33) [2022-01-10 06:21:17,754 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1138 transitions. [2022-01-10 06:21:17,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 06:21:17,757 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:17,757 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 06:21:17,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:17,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:17,972 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:17,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:17,973 INFO L85 PathProgramCache]: Analyzing trace with hash -54169488, now seen corresponding path program 1 times [2022-01-10 06:21:17,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:17,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1961752190] [2022-01-10 06:21:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:17,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:17,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:17,974 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:17,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:21:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:18,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:21:18,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:18,448 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-01-10 06:21:18,448 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:18,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:18,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1961752190] [2022-01-10 06:21:18,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1961752190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:18,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:18,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:21:18,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006247910] [2022-01-10 06:21:18,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:18,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:21:18,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:18,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:21:18,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:18,454 INFO L87 Difference]: Start difference. First operand 769 states and 1138 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) [2022-01-10 06:21:18,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:18,536 INFO L93 Difference]: Finished difference Result 1501 states and 2230 transitions. [2022-01-10 06:21:18,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:21:18,537 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 155 [2022-01-10 06:21:18,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:18,541 INFO L225 Difference]: With dead ends: 1501 [2022-01-10 06:21:18,542 INFO L226 Difference]: Without dead ends: 775 [2022-01-10 06:21:18,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:21:18,548 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 128 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:18,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 2038 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:18,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2022-01-10 06:21:18,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 773. [2022-01-10 06:21:18,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 593 states have (on average 1.4890387858347387) internal successors, (883), 604 states have internal predecessors, (883), 122 states have call successors, (122), 49 states have call predecessors, (122), 57 states have return successors, (140), 123 states have call predecessors, (140), 120 states have call successors, (140) [2022-01-10 06:21:18,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 1145 transitions. [2022-01-10 06:21:18,586 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 1145 transitions. Word has length 155 [2022-01-10 06:21:18,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:18,586 INFO L470 AbstractCegarLoop]: Abstraction has 773 states and 1145 transitions. [2022-01-10 06:21:18,586 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) [2022-01-10 06:21:18,586 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 1145 transitions. [2022-01-10 06:21:18,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 06:21:18,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:18,590 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] [2022-01-10 06:21:18,604 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:18,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:18,804 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:18,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:18,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1290493843, now seen corresponding path program 1 times [2022-01-10 06:21:18,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:18,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1453800562] [2022-01-10 06:21:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:18,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:18,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:18,807 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:18,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 06:21:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:19,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:19,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:21:19,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:19,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:19,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1453800562] [2022-01-10 06:21:19,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1453800562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:19,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:19,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:19,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395762523] [2022-01-10 06:21:19,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:19,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:19,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:19,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:19,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:19,288 INFO L87 Difference]: Start difference. First operand 773 states and 1145 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-01-10 06:21:19,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:19,330 INFO L93 Difference]: Finished difference Result 1619 states and 2434 transitions. [2022-01-10 06:21:19,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:19,331 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 156 [2022-01-10 06:21:19,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:19,337 INFO L225 Difference]: With dead ends: 1619 [2022-01-10 06:21:19,337 INFO L226 Difference]: Without dead ends: 897 [2022-01-10 06:21:19,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:19,341 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 115 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:19,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 1087 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:19,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-01-10 06:21:19,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 881. [2022-01-10 06:21:19,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 679 states have (on average 1.5066273932253313) internal successors, (1023), 690 states have internal predecessors, (1023), 144 states have call successors, (144), 49 states have call predecessors, (144), 57 states have return successors, (170), 145 states have call predecessors, (170), 142 states have call successors, (170) [2022-01-10 06:21:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1337 transitions. [2022-01-10 06:21:19,384 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1337 transitions. Word has length 156 [2022-01-10 06:21:19,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:19,385 INFO L470 AbstractCegarLoop]: Abstraction has 881 states and 1337 transitions. [2022-01-10 06:21:19,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2022-01-10 06:21:19,385 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1337 transitions. [2022-01-10 06:21:19,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 06:21:19,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:19,390 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] [2022-01-10 06:21:19,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:19,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:19,604 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:19,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:19,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1890784410, now seen corresponding path program 1 times [2022-01-10 06:21:19,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:19,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455748136] [2022-01-10 06:21:19,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:19,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:19,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:19,606 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:19,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 06:21:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:19,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:21:19,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 06:21:20,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:20,057 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:20,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455748136] [2022-01-10 06:21:20,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455748136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:20,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:20,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:21:20,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530107185] [2022-01-10 06:21:20,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:20,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:21:20,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:20,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:21:20,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:21:20,059 INFO L87 Difference]: Start difference. First operand 881 states and 1337 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:21:20,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:20,177 INFO L93 Difference]: Finished difference Result 1991 states and 3087 transitions. [2022-01-10 06:21:20,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:21:20,178 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (19), 3 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 157 [2022-01-10 06:21:20,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:20,184 INFO L225 Difference]: With dead ends: 1991 [2022-01-10 06:21:20,185 INFO L226 Difference]: Without dead ends: 1159 [2022-01-10 06:21:20,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:21:20,188 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 646 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1285 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:20,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [646 Valid, 1285 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:21:20,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-01-10 06:21:20,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 889. [2022-01-10 06:21:20,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 685 states have (on average 1.491970802919708) internal successors, (1022), 696 states have internal predecessors, (1022), 144 states have call successors, (144), 51 states have call predecessors, (144), 59 states have return successors, (168), 145 states have call predecessors, (168), 142 states have call successors, (168) [2022-01-10 06:21:20,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1334 transitions. [2022-01-10 06:21:20,233 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1334 transitions. Word has length 157 [2022-01-10 06:21:20,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:20,234 INFO L470 AbstractCegarLoop]: Abstraction has 889 states and 1334 transitions. [2022-01-10 06:21:20,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:21:20,234 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1334 transitions. [2022-01-10 06:21:20,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 06:21:20,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:20,238 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] [2022-01-10 06:21:20,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:20,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:20,451 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:20,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:20,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1393291812, now seen corresponding path program 1 times [2022-01-10 06:21:20,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:20,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334194696] [2022-01-10 06:21:20,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:20,452 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:20,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:20,454 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:20,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 06:21:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:20,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:21:20,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:21:20,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:21:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:21:21,172 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:21,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334194696] [2022-01-10 06:21:21,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334194696] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:21:21,173 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:21:21,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:21:21,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12408305] [2022-01-10 06:21:21,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:21:21,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:21:21,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:21,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:21:21,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:21:21,174 INFO L87 Difference]: Start difference. First operand 889 states and 1334 transitions. Second operand has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:21:21,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:21,456 INFO L93 Difference]: Finished difference Result 2075 states and 3226 transitions. [2022-01-10 06:21:21,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:21:21,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 158 [2022-01-10 06:21:21,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:21,469 INFO L225 Difference]: With dead ends: 2075 [2022-01-10 06:21:21,469 INFO L226 Difference]: Without dead ends: 1633 [2022-01-10 06:21:21,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:21:21,473 INFO L933 BasicCegarLoop]: 612 mSDtfsCounter, 526 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:21,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 2009 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:21:21,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2022-01-10 06:21:21,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1585. [2022-01-10 06:21:21,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1253 states have (on average 1.5466879489225858) internal successors, (1938), 1264 states have internal predecessors, (1938), 272 states have call successors, (272), 51 states have call predecessors, (272), 59 states have return successors, (336), 273 states have call predecessors, (336), 270 states have call successors, (336) [2022-01-10 06:21:21,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 2546 transitions. [2022-01-10 06:21:21,572 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 2546 transitions. Word has length 158 [2022-01-10 06:21:21,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:21,572 INFO L470 AbstractCegarLoop]: Abstraction has 1585 states and 2546 transitions. [2022-01-10 06:21:21,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-01-10 06:21:21,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 2546 transitions. [2022-01-10 06:21:21,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 06:21:21,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:21,580 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:21:21,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:21,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:21,794 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:21,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:21,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1165448326, now seen corresponding path program 1 times [2022-01-10 06:21:21,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:21,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [16930413] [2022-01-10 06:21:21,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:21,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:21,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:21,796 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:21,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 06:21:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:22,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:22,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:22,231 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:21:22,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:22,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:22,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [16930413] [2022-01-10 06:21:22,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [16930413] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:22,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:22,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:22,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161078261] [2022-01-10 06:21:22,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:22,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:22,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:22,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:22,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:22,234 INFO L87 Difference]: Start difference. First operand 1585 states and 2546 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2022-01-10 06:21:22,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:22,342 INFO L93 Difference]: Finished difference Result 3683 states and 6045 transitions. [2022-01-10 06:21:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:22,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 160 [2022-01-10 06:21:22,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:22,383 INFO L225 Difference]: With dead ends: 3683 [2022-01-10 06:21:22,383 INFO L226 Difference]: Without dead ends: 2251 [2022-01-10 06:21:22,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:22,388 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 109 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:22,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1129 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:22,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2251 states. [2022-01-10 06:21:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2251 to 2235. [2022-01-10 06:21:22,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 1775 states have (on average 1.5707042253521126) internal successors, (2788), 1786 states have internal predecessors, (2788), 400 states have call successors, (400), 51 states have call predecessors, (400), 59 states have return successors, (504), 401 states have call predecessors, (504), 398 states have call successors, (504) [2022-01-10 06:21:22,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 3692 transitions. [2022-01-10 06:21:22,521 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 3692 transitions. Word has length 160 [2022-01-10 06:21:22,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:22,521 INFO L470 AbstractCegarLoop]: Abstraction has 2235 states and 3692 transitions. [2022-01-10 06:21:22,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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) [2022-01-10 06:21:22,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 3692 transitions. [2022-01-10 06:21:22,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 06:21:22,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:22,533 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 06:21:22,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 06:21:22,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:22,747 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:22,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:22,747 INFO L85 PathProgramCache]: Analyzing trace with hash 99873578, now seen corresponding path program 1 times [2022-01-10 06:21:22,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:22,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675451353] [2022-01-10 06:21:22,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:22,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:22,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:22,749 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:22,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:21:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:22,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:22,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:23,141 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:21:23,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:23,141 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:23,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675451353] [2022-01-10 06:21:23,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675451353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:23,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:23,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:23,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096191145] [2022-01-10 06:21:23,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:23,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:23,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:23,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:23,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:23,143 INFO L87 Difference]: Start difference. First operand 2235 states and 3692 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-01-10 06:21:23,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:23,300 INFO L93 Difference]: Finished difference Result 5283 states and 8803 transitions. [2022-01-10 06:21:23,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:23,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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 161 [2022-01-10 06:21:23,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:23,323 INFO L225 Difference]: With dead ends: 5283 [2022-01-10 06:21:23,323 INFO L226 Difference]: Without dead ends: 3307 [2022-01-10 06:21:23,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:23,335 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 107 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:23,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 1114 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:23,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2022-01-10 06:21:23,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 3291. [2022-01-10 06:21:23,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3291 states, 2641 states have (on average 1.5789473684210527) internal successors, (4170), 2652 states have internal predecessors, (4170), 590 states have call successors, (590), 51 states have call predecessors, (590), 59 states have return successors, (726), 591 states have call predecessors, (726), 588 states have call successors, (726) [2022-01-10 06:21:23,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3291 states to 3291 states and 5486 transitions. [2022-01-10 06:21:23,611 INFO L78 Accepts]: Start accepts. Automaton has 3291 states and 5486 transitions. Word has length 161 [2022-01-10 06:21:23,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:23,611 INFO L470 AbstractCegarLoop]: Abstraction has 3291 states and 5486 transitions. [2022-01-10 06:21:23,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-01-10 06:21:23,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3291 states and 5486 transitions. [2022-01-10 06:21:23,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 06:21:23,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:23,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:21:23,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:23,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:23,843 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:23,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:23,843 INFO L85 PathProgramCache]: Analyzing trace with hash 537207148, now seen corresponding path program 1 times [2022-01-10 06:21:23,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:23,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497962000] [2022-01-10 06:21:23,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:23,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:23,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:23,845 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:23,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:21:24,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:24,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:24,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:21:24,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:24,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:24,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497962000] [2022-01-10 06:21:24,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497962000] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:24,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:24,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:24,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654516275] [2022-01-10 06:21:24,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:24,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:24,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:24,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:24,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:24,268 INFO L87 Difference]: Start difference. First operand 3291 states and 5486 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2022-01-10 06:21:24,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:24,558 INFO L93 Difference]: Finished difference Result 7675 states and 12925 transitions. [2022-01-10 06:21:24,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:24,559 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 162 [2022-01-10 06:21:24,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:24,587 INFO L225 Difference]: With dead ends: 7675 [2022-01-10 06:21:24,588 INFO L226 Difference]: Without dead ends: 4909 [2022-01-10 06:21:24,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:24,600 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 105 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:24,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 1109 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:24,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4909 states. [2022-01-10 06:21:24,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4909 to 4893. [2022-01-10 06:21:24,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4893 states, 3997 states have (on average 1.5851888916687515) internal successors, (6336), 4008 states have internal predecessors, (6336), 836 states have call successors, (836), 51 states have call predecessors, (836), 59 states have return successors, (1056), 837 states have call predecessors, (1056), 834 states have call successors, (1056) [2022-01-10 06:21:24,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4893 states to 4893 states and 8228 transitions. [2022-01-10 06:21:24,927 INFO L78 Accepts]: Start accepts. Automaton has 4893 states and 8228 transitions. Word has length 162 [2022-01-10 06:21:24,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:24,927 INFO L470 AbstractCegarLoop]: Abstraction has 4893 states and 8228 transitions. [2022-01-10 06:21:24,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2022-01-10 06:21:24,928 INFO L276 IsEmpty]: Start isEmpty. Operand 4893 states and 8228 transitions. [2022-01-10 06:21:24,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-10 06:21:24,978 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:24,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:21:24,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:25,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:25,179 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:25,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:25,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1740315095, now seen corresponding path program 1 times [2022-01-10 06:21:25,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:25,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911625227] [2022-01-10 06:21:25,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:25,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:25,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:25,181 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:25,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 06:21:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:25,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:25,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:25,581 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:21:25,581 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:25,581 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:25,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911625227] [2022-01-10 06:21:25,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911625227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:25,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:25,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:25,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951595581] [2022-01-10 06:21:25,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:25,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:25,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:25,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:25,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:25,582 INFO L87 Difference]: Start difference. First operand 4893 states and 8228 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2022-01-10 06:21:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:25,917 INFO L93 Difference]: Finished difference Result 11407 states and 19363 transitions. [2022-01-10 06:21:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:25,917 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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 163 [2022-01-10 06:21:25,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:25,974 INFO L225 Difference]: With dead ends: 11407 [2022-01-10 06:21:25,974 INFO L226 Difference]: Without dead ends: 7471 [2022-01-10 06:21:26,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:26,042 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 103 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:26,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 1109 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:26,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7471 states. [2022-01-10 06:21:26,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7471 to 7455. [2022-01-10 06:21:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7455 states, 6201 states have (on average 1.5890985324947589) internal successors, (9854), 6212 states have internal predecessors, (9854), 1194 states have call successors, (1194), 51 states have call predecessors, (1194), 59 states have return successors, (1554), 1195 states have call predecessors, (1554), 1192 states have call successors, (1554) [2022-01-10 06:21:26,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7455 states to 7455 states and 12602 transitions. [2022-01-10 06:21:26,600 INFO L78 Accepts]: Start accepts. Automaton has 7455 states and 12602 transitions. Word has length 163 [2022-01-10 06:21:26,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:26,601 INFO L470 AbstractCegarLoop]: Abstraction has 7455 states and 12602 transitions. [2022-01-10 06:21:26,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2022-01-10 06:21:26,601 INFO L276 IsEmpty]: Start isEmpty. Operand 7455 states and 12602 transitions. [2022-01-10 06:21:26,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-10 06:21:26,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:26,635 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:21:26,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:26,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:26,849 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:26,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:26,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1324768400, now seen corresponding path program 1 times [2022-01-10 06:21:26,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:26,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [21930717] [2022-01-10 06:21:26,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:26,850 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:26,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:26,851 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:26,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:21:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:27,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:27,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:21:27,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:27,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:27,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [21930717] [2022-01-10 06:21:27,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [21930717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:27,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:27,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:27,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366502472] [2022-01-10 06:21:27,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:27,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:27,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:27,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:27,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:27,246 INFO L87 Difference]: Start difference. First operand 7455 states and 12602 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2022-01-10 06:21:27,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:27,718 INFO L93 Difference]: Finished difference Result 17551 states and 29949 transitions. [2022-01-10 06:21:27,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:27,719 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 164 [2022-01-10 06:21:27,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:27,768 INFO L225 Difference]: With dead ends: 17551 [2022-01-10 06:21:27,769 INFO L226 Difference]: Without dead ends: 11709 [2022-01-10 06:21:27,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:27,793 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 101 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:27,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1119 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:27,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11709 states. [2022-01-10 06:21:28,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11709 to 11693. [2022-01-10 06:21:28,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11693 states, 9687 states have (on average 1.58294621657892) internal successors, (15334), 9698 states have internal predecessors, (15334), 1946 states have call successors, (1946), 51 states have call predecessors, (1946), 59 states have return successors, (2550), 1947 states have call predecessors, (2550), 1944 states have call successors, (2550) [2022-01-10 06:21:28,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11693 states to 11693 states and 19830 transitions. [2022-01-10 06:21:28,486 INFO L78 Accepts]: Start accepts. Automaton has 11693 states and 19830 transitions. Word has length 164 [2022-01-10 06:21:28,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:28,487 INFO L470 AbstractCegarLoop]: Abstraction has 11693 states and 19830 transitions. [2022-01-10 06:21:28,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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) [2022-01-10 06:21:28,487 INFO L276 IsEmpty]: Start isEmpty. Operand 11693 states and 19830 transitions. [2022-01-10 06:21:28,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 06:21:28,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:28,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:21:28,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:28,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:28,743 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:28,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:28,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1933035557, now seen corresponding path program 1 times [2022-01-10 06:21:28,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:28,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92162335] [2022-01-10 06:21:28,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:28,744 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:28,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:28,746 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:28,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:21:28,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:29,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 660 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:29,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:29,234 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:21:29,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:29,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:29,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92162335] [2022-01-10 06:21:29,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92162335] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:29,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:29,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:29,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035951956] [2022-01-10 06:21:29,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:29,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:29,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:29,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:29,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:29,238 INFO L87 Difference]: Start difference. First operand 11693 states and 19830 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2022-01-10 06:21:30,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:30,068 INFO L93 Difference]: Finished difference Result 28673 states and 48873 transitions. [2022-01-10 06:21:30,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:30,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 165 [2022-01-10 06:21:30,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:30,159 INFO L225 Difference]: With dead ends: 28673 [2022-01-10 06:21:30,160 INFO L226 Difference]: Without dead ends: 19387 [2022-01-10 06:21:30,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:30,198 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 99 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:30,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 1117 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:30,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19387 states. [2022-01-10 06:21:31,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19387 to 19371. [2022-01-10 06:21:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19371 states, 16153 states have (on average 1.5810066241565035) internal successors, (25538), 16164 states have internal predecessors, (25538), 3158 states have call successors, (3158), 51 states have call predecessors, (3158), 59 states have return successors, (4062), 3159 states have call predecessors, (4062), 3156 states have call successors, (4062) [2022-01-10 06:21:31,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19371 states to 19371 states and 32758 transitions. [2022-01-10 06:21:31,579 INFO L78 Accepts]: Start accepts. Automaton has 19371 states and 32758 transitions. Word has length 165 [2022-01-10 06:21:31,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:31,579 INFO L470 AbstractCegarLoop]: Abstraction has 19371 states and 32758 transitions. [2022-01-10 06:21:31,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2022-01-10 06:21:31,580 INFO L276 IsEmpty]: Start isEmpty. Operand 19371 states and 32758 transitions. [2022-01-10 06:21:31,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 06:21:31,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:31,646 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 06:21:31,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:31,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:31,861 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:31,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:31,862 INFO L85 PathProgramCache]: Analyzing trace with hash -982285566, now seen corresponding path program 1 times [2022-01-10 06:21:31,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:31,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186154098] [2022-01-10 06:21:31,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:31,862 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:31,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:31,863 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:31,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:21:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:32,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 662 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:32,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:21:32,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:32,355 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:32,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186154098] [2022-01-10 06:21:32,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186154098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:32,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:32,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:32,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443366479] [2022-01-10 06:21:32,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:32,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:32,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:32,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:32,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:32,358 INFO L87 Difference]: Start difference. First operand 19371 states and 32758 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-01-10 06:21:33,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:33,756 INFO L93 Difference]: Finished difference Result 49881 states and 84805 transitions. [2022-01-10 06:21:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:33,757 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 166 [2022-01-10 06:21:33,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:33,929 INFO L225 Difference]: With dead ends: 49881 [2022-01-10 06:21:33,930 INFO L226 Difference]: Without dead ends: 33869 [2022-01-10 06:21:33,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:33,987 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 97 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1125 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:33,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1125 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:34,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33869 states. [2022-01-10 06:21:36,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33869 to 33853. [2022-01-10 06:21:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33853 states, 28229 states have (on average 1.5727797654893902) internal successors, (44398), 28240 states have internal predecessors, (44398), 5564 states have call successors, (5564), 51 states have call predecessors, (5564), 59 states have return successors, (7174), 5565 states have call predecessors, (7174), 5562 states have call successors, (7174) [2022-01-10 06:21:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33853 states to 33853 states and 57136 transitions. [2022-01-10 06:21:36,519 INFO L78 Accepts]: Start accepts. Automaton has 33853 states and 57136 transitions. Word has length 166 [2022-01-10 06:21:36,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:36,519 INFO L470 AbstractCegarLoop]: Abstraction has 33853 states and 57136 transitions. [2022-01-10 06:21:36,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2022-01-10 06:21:36,520 INFO L276 IsEmpty]: Start isEmpty. Operand 33853 states and 57136 transitions. [2022-01-10 06:21:36,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 06:21:36,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:36,631 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:21:36,645 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-01-10 06:21:36,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:36,845 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:36,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:36,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1671199228, now seen corresponding path program 1 times [2022-01-10 06:21:36,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:36,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833327952] [2022-01-10 06:21:36,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:36,847 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:36,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:36,848 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:36,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:21:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:37,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:37,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:37,314 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:21:37,314 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:37,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:37,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833327952] [2022-01-10 06:21:37,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833327952] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:37,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:37,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:37,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390161617] [2022-01-10 06:21:37,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:37,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:37,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:37,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:37,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:37,316 INFO L87 Difference]: Start difference. First operand 33853 states and 57136 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2022-01-10 06:21:40,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:40,162 INFO L93 Difference]: Finished difference Result 89429 states and 151749 transitions. [2022-01-10 06:21:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:40,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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 167 [2022-01-10 06:21:40,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:40,530 INFO L225 Difference]: With dead ends: 89429 [2022-01-10 06:21:40,530 INFO L226 Difference]: Without dead ends: 60275 [2022-01-10 06:21:40,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:40,623 INFO L933 BasicCegarLoop]: 567 mSDtfsCounter, 95 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:40,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 1114 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:40,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60275 states. [2022-01-10 06:21:44,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60275 to 60259. [2022-01-10 06:21:44,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60259 states, 50557 states have (on average 1.5685661728346223) internal successors, (79302), 50568 states have internal predecessors, (79302), 9642 states have call successors, (9642), 51 states have call predecessors, (9642), 59 states have return successors, (12606), 9643 states have call predecessors, (12606), 9640 states have call successors, (12606) [2022-01-10 06:21:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60259 states to 60259 states and 101550 transitions. [2022-01-10 06:21:44,243 INFO L78 Accepts]: Start accepts. Automaton has 60259 states and 101550 transitions. Word has length 167 [2022-01-10 06:21:44,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:44,244 INFO L470 AbstractCegarLoop]: Abstraction has 60259 states and 101550 transitions. [2022-01-10 06:21:44,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2022-01-10 06:21:44,244 INFO L276 IsEmpty]: Start isEmpty. Operand 60259 states and 101550 transitions. [2022-01-10 06:21:44,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-01-10 06:21:44,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:44,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:21:44,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:44,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:44,781 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:44,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:44,781 INFO L85 PathProgramCache]: Analyzing trace with hash 460905120, now seen corresponding path program 1 times [2022-01-10 06:21:44,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:44,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182494128] [2022-01-10 06:21:44,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:44,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:44,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:44,783 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:44,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:21:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:44,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:44,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:21:45,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:45,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:45,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182494128] [2022-01-10 06:21:45,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182494128] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:45,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:45,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:45,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695231667] [2022-01-10 06:21:45,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:45,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:45,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:45,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:45,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:45,194 INFO L87 Difference]: Start difference. First operand 60259 states and 101550 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-01-10 06:21:50,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:21:50,192 INFO L93 Difference]: Finished difference Result 164113 states and 276593 transitions. [2022-01-10 06:21:50,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:21:50,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 168 [2022-01-10 06:21:50,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:21:50,771 INFO L225 Difference]: With dead ends: 164113 [2022-01-10 06:21:50,771 INFO L226 Difference]: Without dead ends: 110161 [2022-01-10 06:21:50,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:50,902 INFO L933 BasicCegarLoop]: 573 mSDtfsCounter, 93 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:21:50,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 1121 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:21:50,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110161 states. [2022-01-10 06:21:56,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110161 to 110145. [2022-01-10 06:21:56,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110145 states, 93013 states have (on average 1.5628783073333834) internal successors, (145368), 93024 states have internal predecessors, (145368), 17072 states have call successors, (17072), 51 states have call predecessors, (17072), 59 states have return successors, (21632), 17073 states have call predecessors, (21632), 17070 states have call successors, (21632) [2022-01-10 06:21:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110145 states to 110145 states and 184072 transitions. [2022-01-10 06:21:57,527 INFO L78 Accepts]: Start accepts. Automaton has 110145 states and 184072 transitions. Word has length 168 [2022-01-10 06:21:57,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:21:57,527 INFO L470 AbstractCegarLoop]: Abstraction has 110145 states and 184072 transitions. [2022-01-10 06:21:57,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-01-10 06:21:57,527 INFO L276 IsEmpty]: Start isEmpty. Operand 110145 states and 184072 transitions. [2022-01-10 06:21:57,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-01-10 06:21:57,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:21:57,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:21:57,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:21:57,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:21:57,885 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:21:57,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:21:57,885 INFO L85 PathProgramCache]: Analyzing trace with hash 907493156, now seen corresponding path program 1 times [2022-01-10 06:21:57,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:21:57,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666437018] [2022-01-10 06:21:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:21:57,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:21:57,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:21:57,887 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:21:57,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:21:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:21:58,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 668 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:21:58,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:21:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-01-10 06:21:58,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:21:58,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:21:58,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666437018] [2022-01-10 06:21:58,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666437018] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:21:58,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:21:58,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:21:58,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040396143] [2022-01-10 06:21:58,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:21:58,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:21:58,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:21:58,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:21:58,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:21:58,301 INFO L87 Difference]: Start difference. First operand 110145 states and 184072 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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)