/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_spec0_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:19:55,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:19:55,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:19:55,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:19:55,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:19:55,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:19:55,610 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:19:55,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:19:55,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:19:55,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:19:55,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:19:55,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:19:55,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:19:55,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:19:55,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:19:55,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:19:55,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:19:55,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:19:55,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:19:55,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:19:55,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:19:55,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:19:55,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:19:55,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:19:55,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:19:55,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:19:55,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:19:55,645 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:19:55,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:19:55,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:19:55,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:19:55,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:19:55,648 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:19:55,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:19:55,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:19:55,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:19:55,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:19:55,650 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:19:55,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:19:55,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:19:55,652 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:19:55,653 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 06:19:55,672 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:19:55,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:19:55,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:19:55,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:19:55,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:19:55,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:19:55,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:19:55,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:19:55,674 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:19:55,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:19:55,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:19:55,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:19:55,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:19:55,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:19:55,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:19:55,674 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:19:55,674 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:19:55,675 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:19:55,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:19:55,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:19:55,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:19:55,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:19:55,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:19:55,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:19:55,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:19:55,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:19:55,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:19:55,677 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:19:55,678 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:19:55,678 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:19:55,678 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:19:55,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:19:55,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:19:55,678 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:19:55,850 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:19:55,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:19:55,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:19:55,868 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:19:55,869 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:19:55,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec0_product36.cil.c [2022-01-10 06:19:55,945 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0652dfe/b0ecb4d9b83343d0991fb08634a7b1be/FLAG3ed655470 [2022-01-10 06:19:56,400 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:19:56,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec0_product36.cil.c [2022-01-10 06:19:56,434 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0652dfe/b0ecb4d9b83343d0991fb08634a7b1be/FLAG3ed655470 [2022-01-10 06:19:56,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0652dfe/b0ecb4d9b83343d0991fb08634a7b1be [2022-01-10 06:19:56,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:19:56,738 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:19:56,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:19:56,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:19:56,745 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:19:56,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:19:56" (1/1) ... [2022-01-10 06:19:56,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb04474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:56, skipping insertion in model container [2022-01-10 06:19:56,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:19:56" (1/1) ... [2022-01-10 06:19:56,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:19:56,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:19:57,014 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_spec0_product36.cil.c[12529,12542] [2022-01-10 06:19:57,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:19:57,179 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 06:19:57,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:19:57,231 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_spec0_product36.cil.c[12529,12542] [2022-01-10 06:19:57,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:19:57,279 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:19:57,323 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_spec0_product36.cil.c[12529,12542] [2022-01-10 06:19:57,366 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:19:57,391 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:19:57,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:57 WrapperNode [2022-01-10 06:19:57,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:19:57,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:19:57,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:19:57,393 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:19:57,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:57" (1/1) ... [2022-01-10 06:19:57,426 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:57" (1/1) ... [2022-01-10 06:19:57,476 INFO L137 Inliner]: procedures = 115, calls = 154, calls flagged for inlining = 41, calls inlined = 36, statements flattened = 656 [2022-01-10 06:19:57,476 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:19:57,477 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:19:57,477 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:19:57,477 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:19:57,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:57" (1/1) ... [2022-01-10 06:19:57,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:57" (1/1) ... [2022-01-10 06:19:57,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:57" (1/1) ... [2022-01-10 06:19:57,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:57" (1/1) ... [2022-01-10 06:19:57,511 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:57" (1/1) ... [2022-01-10 06:19:57,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:57" (1/1) ... [2022-01-10 06:19:57,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:57" (1/1) ... [2022-01-10 06:19:57,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:19:57,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:19:57,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:19:57,540 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:19:57,556 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:57" (1/1) ... [2022-01-10 06:19:57,561 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:19:57,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:19:57,590 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 06:19:57,603 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 06:19:57,618 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2022-01-10 06:19:57,619 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2022-01-10 06:19:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2022-01-10 06:19:57,619 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2022-01-10 06:19:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-01-10 06:19:57,619 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-01-10 06:19:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2022-01-10 06:19:57,619 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2022-01-10 06:19:57,619 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-01-10 06:19:57,619 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-01-10 06:19:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-01-10 06:19:57,620 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-01-10 06:19:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 06:19:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-01-10 06:19:57,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-01-10 06:19:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-01-10 06:19:57,620 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-01-10 06:19:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-01-10 06:19:57,620 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-01-10 06:19:57,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:19:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2022-01-10 06:19:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2022-01-10 06:19:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-01-10 06:19:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-01-10 06:19:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:19:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-01-10 06:19:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-01-10 06:19:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-01-10 06:19:57,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-01-10 06:19:57,621 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2022-01-10 06:19:57,622 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2022-01-10 06:19:57,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:19:57,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:19:57,785 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:19:57,787 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:19:58,196 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:19:58,204 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:19:58,204 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 06:19:58,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:19:58 BoogieIcfgContainer [2022-01-10 06:19:58,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:19:58,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:19:58,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:19:58,212 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:19:58,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:19:56" (1/3) ... [2022-01-10 06:19:58,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fcb5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:19:58, skipping insertion in model container [2022-01-10 06:19:58,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:19:57" (2/3) ... [2022-01-10 06:19:58,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64fcb5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:19:58, skipping insertion in model container [2022-01-10 06:19:58,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:19:58" (3/3) ... [2022-01-10 06:19:58,214 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec0_product36.cil.c [2022-01-10 06:19:58,218 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:19:58,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:19:58,257 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:19:58,261 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 06:19:58,261 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:19:58,287 INFO L276 IsEmpty]: Start isEmpty. Operand has 232 states, 185 states have (on average 1.5513513513513513) internal successors, (287), 188 states have internal predecessors, (287), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-10 06:19:58,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 06:19:58,295 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:58,296 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:58,296 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:58,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:58,300 INFO L85 PathProgramCache]: Analyzing trace with hash 857599230, now seen corresponding path program 1 times [2022-01-10 06:19:58,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:58,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1033664556] [2022-01-10 06:19:58,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:58,308 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:58,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:58,310 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 06:19:58,311 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 06:19:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:58,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 1 conjunts are in the unsatisfiable core [2022-01-10 06:19:58,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:58,724 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 06:19:58,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:58,724 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:58,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1033664556] [2022-01-10 06:19:58,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1033664556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:58,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:58,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:19:58,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376869113] [2022-01-10 06:19:58,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:58,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 06:19:58,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:58,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 06:19:58,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 06:19:58,807 INFO L87 Difference]: Start difference. First operand has 232 states, 185 states have (on average 1.5513513513513513) internal successors, (287), 188 states have internal predecessors, (287), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:19:58,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:58,866 INFO L93 Difference]: Finished difference Result 370 states and 545 transitions. [2022-01-10 06:19:58,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 06:19:58,868 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-01-10 06:19:58,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:58,876 INFO L225 Difference]: With dead ends: 370 [2022-01-10 06:19:58,877 INFO L226 Difference]: Without dead ends: 225 [2022-01-10 06:19:58,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 87 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 06:19:58,887 INFO L933 BasicCegarLoop]: 345 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, 345 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 06:19:58,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:58,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-01-10 06:19:58,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 225. [2022-01-10 06:19:58,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 179 states have (on average 1.541899441340782) internal successors, (276), 181 states have internal predecessors, (276), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-10 06:19:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 337 transitions. [2022-01-10 06:19:58,932 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 337 transitions. Word has length 88 [2022-01-10 06:19:58,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:58,933 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 337 transitions. [2022-01-10 06:19:58,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.5) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:19:58,933 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 337 transitions. [2022-01-10 06:19:58,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 06:19:58,936 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:58,936 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:58,954 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 06:19:59,137 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 06:19:59,138 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:59,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:59,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1127852437, now seen corresponding path program 1 times [2022-01-10 06:19:59,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:59,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533901480] [2022-01-10 06:19:59,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:59,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:59,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:59,141 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 06:19:59,143 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 06:19:59,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:59,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:19:59,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:19:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 06:19:59,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:19:59,447 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:19:59,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533901480] [2022-01-10 06:19:59,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533901480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:19:59,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:19:59,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:19:59,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491464340] [2022-01-10 06:19:59,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:19:59,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:19:59,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:19:59,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:19:59,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:19:59,450 INFO L87 Difference]: Start difference. First operand 225 states and 337 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:19:59,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:19:59,500 INFO L93 Difference]: Finished difference Result 443 states and 667 transitions. [2022-01-10 06:19:59,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:19:59,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2022-01-10 06:19:59,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:19:59,503 INFO L225 Difference]: With dead ends: 443 [2022-01-10 06:19:59,503 INFO L226 Difference]: Without dead ends: 227 [2022-01-10 06:19:59,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 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 06:19:59,504 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 108 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 1198 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 06:19:59,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 1198 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:19:59,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-01-10 06:19:59,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-01-10 06:19:59,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 180 states have (on average 1.538888888888889) internal successors, (277), 183 states have internal predecessors, (277), 31 states have call successors, (31), 14 states have call predecessors, (31), 15 states have return successors, (32), 29 states have call predecessors, (32), 30 states have call successors, (32) [2022-01-10 06:19:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 340 transitions. [2022-01-10 06:19:59,519 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 340 transitions. Word has length 89 [2022-01-10 06:19:59,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:19:59,519 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 340 transitions. [2022-01-10 06:19:59,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:19:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 340 transitions. [2022-01-10 06:19:59,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 06:19:59,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:19:59,522 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:19:59,535 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 06:19:59,732 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 06:19:59,733 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:19:59,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:19:59,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1446768039, now seen corresponding path program 1 times [2022-01-10 06:19:59,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:19:59,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1924525715] [2022-01-10 06:19:59,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:19:59,734 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:19:59,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:19:59,736 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 06:19:59,738 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 06:19:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:19:59,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:19:59,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:00,050 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-10 06:20:00,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:00,050 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:00,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1924525715] [2022-01-10 06:20:00,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1924525715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:00,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:00,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:20:00,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103960864] [2022-01-10 06:20:00,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:00,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:20:00,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:00,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:20:00,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:20:00,052 INFO L87 Difference]: Start difference. First operand 227 states and 340 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:20:00,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:00,093 INFO L93 Difference]: Finished difference Result 435 states and 655 transitions. [2022-01-10 06:20:00,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:20:00,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2022-01-10 06:20:00,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:00,095 INFO L225 Difference]: With dead ends: 435 [2022-01-10 06:20:00,095 INFO L226 Difference]: Without dead ends: 227 [2022-01-10 06:20:00,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 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 06:20:00,096 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 107 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1199 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 06:20:00,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1199 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:00,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-01-10 06:20:00,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-01-10 06:20:00,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 180 states have (on average 1.538888888888889) internal successors, (277), 183 states have internal predecessors, (277), 31 states have call successors, (31), 14 states have call predecessors, (31), 15 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) [2022-01-10 06:20:00,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 339 transitions. [2022-01-10 06:20:00,108 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 339 transitions. Word has length 90 [2022-01-10 06:20:00,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:00,109 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 339 transitions. [2022-01-10 06:20:00,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:20:00,109 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 339 transitions. [2022-01-10 06:20:00,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 06:20:00,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:00,111 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 06:20:00,124 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 06:20:00,319 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 06:20:00,320 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:00,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:00,321 INFO L85 PathProgramCache]: Analyzing trace with hash -652619983, now seen corresponding path program 2 times [2022-01-10 06:20:00,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:00,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096415212] [2022-01-10 06:20:00,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:20:00,321 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:00,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:00,322 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 06:20:00,324 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 06:20:00,461 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:20:00,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:20:00,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:20:00,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:20:00,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:00,576 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:00,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096415212] [2022-01-10 06:20:00,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096415212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:00,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:00,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:20:00,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107195002] [2022-01-10 06:20:00,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:00,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:20:00,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:00,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:20:00,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:20:00,579 INFO L87 Difference]: Start difference. First operand 227 states and 339 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:00,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:00,592 INFO L93 Difference]: Finished difference Result 362 states and 525 transitions. [2022-01-10 06:20:00,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:20:00,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2022-01-10 06:20:00,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:00,594 INFO L225 Difference]: With dead ends: 362 [2022-01-10 06:20:00,594 INFO L226 Difference]: Without dead ends: 230 [2022-01-10 06:20:00,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 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 06:20:00,596 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 1 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 668 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 06:20:00,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 668 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:00,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-01-10 06:20:00,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 229. [2022-01-10 06:20:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 182 states have (on average 1.532967032967033) internal successors, (279), 185 states have internal predecessors, (279), 31 states have call successors, (31), 14 states have call predecessors, (31), 15 states have return successors, (31), 29 states have call predecessors, (31), 30 states have call successors, (31) [2022-01-10 06:20:00,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 341 transitions. [2022-01-10 06:20:00,604 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 341 transitions. Word has length 91 [2022-01-10 06:20:00,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:00,604 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 341 transitions. [2022-01-10 06:20:00,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:00,604 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 341 transitions. [2022-01-10 06:20:00,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-10 06:20:00,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:00,605 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 06:20:00,615 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 06:20:00,813 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 06:20:00,813 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:00,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:00,814 INFO L85 PathProgramCache]: Analyzing trace with hash 798060657, now seen corresponding path program 1 times [2022-01-10 06:20:00,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:00,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377791470] [2022-01-10 06:20:00,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:00,815 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:00,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:00,826 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 06:20:00,827 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 06:20:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:01,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:20:01,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-10 06:20:01,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:01,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:01,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377791470] [2022-01-10 06:20:01,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377791470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:01,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:01,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:20:01,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72914670] [2022-01-10 06:20:01,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:01,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:20:01,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:01,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:20:01,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:20:01,202 INFO L87 Difference]: Start difference. First operand 229 states and 341 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:20:01,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:01,243 INFO L93 Difference]: Finished difference Result 441 states and 662 transitions. [2022-01-10 06:20:01,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:20:01,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 96 [2022-01-10 06:20:01,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:01,245 INFO L225 Difference]: With dead ends: 441 [2022-01-10 06:20:01,245 INFO L226 Difference]: Without dead ends: 231 [2022-01-10 06:20:01,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 92 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 06:20:01,259 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 105 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1201 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 06:20:01,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 1201 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-01-10 06:20:01,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2022-01-10 06:20:01,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 183 states have (on average 1.530054644808743) internal successors, (280), 187 states have internal predecessors, (280), 31 states have call successors, (31), 14 states have call predecessors, (31), 16 states have return successors, (33), 29 states have call predecessors, (33), 30 states have call successors, (33) [2022-01-10 06:20:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 344 transitions. [2022-01-10 06:20:01,276 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 344 transitions. Word has length 96 [2022-01-10 06:20:01,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:01,276 INFO L470 AbstractCegarLoop]: Abstraction has 231 states and 344 transitions. [2022-01-10 06:20:01,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2022-01-10 06:20:01,276 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 344 transitions. [2022-01-10 06:20:01,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 06:20:01,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:01,293 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2022-01-10 06:20:01,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 06:20:01,501 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 06:20:01,502 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:01,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:01,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1156358122, now seen corresponding path program 1 times [2022-01-10 06:20:01,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:01,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157943455] [2022-01-10 06:20:01,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:01,503 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:01,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:01,504 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 06:20:01,505 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 06:20:01,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:01,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 06:20:01,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:01,842 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:20:01,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:20:01,988 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:20:01,989 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:01,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157943455] [2022-01-10 06:20:01,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157943455] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 06:20:01,989 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 06:20:01,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-01-10 06:20:01,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710824227] [2022-01-10 06:20:01,990 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 06:20:01,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:20:01,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:01,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:20:01,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:20:01,993 INFO L87 Difference]: Start difference. First operand 231 states and 344 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:20:02,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:02,092 INFO L93 Difference]: Finished difference Result 546 states and 844 transitions. [2022-01-10 06:20:02,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:20:02,092 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 97 [2022-01-10 06:20:02,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:02,094 INFO L225 Difference]: With dead ends: 546 [2022-01-10 06:20:02,094 INFO L226 Difference]: Without dead ends: 414 [2022-01-10 06:20:02,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 188 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 06:20:02,095 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 346 mSDsluCounter, 1420 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:20:02,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 1774 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:20:02,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-10 06:20:02,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 390. [2022-01-10 06:20:02,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 333 states have (on average 1.6516516516516517) internal successors, (550), 337 states have internal predecessors, (550), 40 states have call successors, (40), 14 states have call predecessors, (40), 16 states have return successors, (42), 38 states have call predecessors, (42), 39 states have call successors, (42) [2022-01-10 06:20:02,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 632 transitions. [2022-01-10 06:20:02,110 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 632 transitions. Word has length 97 [2022-01-10 06:20:02,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:02,110 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 632 transitions. [2022-01-10 06:20:02,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:20:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 632 transitions. [2022-01-10 06:20:02,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 06:20:02,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:02,112 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:02,139 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 06:20:02,321 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 06:20:02,321 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:02,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:02,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1308293423, now seen corresponding path program 1 times [2022-01-10 06:20:02,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:02,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701949426] [2022-01-10 06:20:02,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:02,322 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:02,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:02,325 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 06:20:02,326 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 06:20:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:02,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:20:02,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:20:02,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:02,584 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:02,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701949426] [2022-01-10 06:20:02,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [701949426] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:02,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:02,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:20:02,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240445250] [2022-01-10 06:20:02,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:02,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:20:02,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:02,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:20:02,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:20:02,586 INFO L87 Difference]: Start difference. First operand 390 states and 632 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:02,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:02,633 INFO L93 Difference]: Finished difference Result 918 states and 1522 transitions. [2022-01-10 06:20:02,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:20:02,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 104 [2022-01-10 06:20:02,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:02,636 INFO L225 Difference]: With dead ends: 918 [2022-01-10 06:20:02,636 INFO L226 Difference]: Without dead ends: 556 [2022-01-10 06:20:02,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 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 06:20:02,637 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 92 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 673 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 06:20:02,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 673 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:02,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-01-10 06:20:02,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 548. [2022-01-10 06:20:02,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 482 states have (on average 1.6867219917012448) internal successors, (813), 486 states have internal predecessors, (813), 49 states have call successors, (49), 14 states have call predecessors, (49), 16 states have return successors, (51), 47 states have call predecessors, (51), 48 states have call successors, (51) [2022-01-10 06:20:02,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 913 transitions. [2022-01-10 06:20:02,658 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 913 transitions. Word has length 104 [2022-01-10 06:20:02,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:02,658 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 913 transitions. [2022-01-10 06:20:02,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:02,658 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 913 transitions. [2022-01-10 06:20:02,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 06:20:02,664 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:02,665 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:02,673 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 06:20:02,873 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 06:20:02,873 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:02,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2130649938, now seen corresponding path program 1 times [2022-01-10 06:20:02,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:02,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004713396] [2022-01-10 06:20:02,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:02,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:02,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:02,876 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 06:20:02,877 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 06:20:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:03,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:20:03,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:20:03,139 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:03,139 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:03,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004713396] [2022-01-10 06:20:03,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004713396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:03,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:03,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:20:03,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44356528] [2022-01-10 06:20:03,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:03,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:20:03,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:03,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:20:03,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:20:03,141 INFO L87 Difference]: Start difference. First operand 548 states and 913 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:03,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:03,181 INFO L93 Difference]: Finished difference Result 1295 states and 2200 transitions. [2022-01-10 06:20:03,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:20:03,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 105 [2022-01-10 06:20:03,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:03,185 INFO L225 Difference]: With dead ends: 1295 [2022-01-10 06:20:03,185 INFO L226 Difference]: Without dead ends: 793 [2022-01-10 06:20:03,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 103 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 06:20:03,187 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 90 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 671 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 06:20:03,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 671 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:03,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-01-10 06:20:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 785. [2022-01-10 06:20:03,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 704 states have (on average 1.7116477272727273) internal successors, (1205), 708 states have internal predecessors, (1205), 64 states have call successors, (64), 14 states have call predecessors, (64), 16 states have return successors, (66), 62 states have call predecessors, (66), 63 states have call successors, (66) [2022-01-10 06:20:03,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 1335 transitions. [2022-01-10 06:20:03,210 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 1335 transitions. Word has length 105 [2022-01-10 06:20:03,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:03,210 INFO L470 AbstractCegarLoop]: Abstraction has 785 states and 1335 transitions. [2022-01-10 06:20:03,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:03,210 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 1335 transitions. [2022-01-10 06:20:03,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 06:20:03,212 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:03,213 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:03,223 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 06:20:03,443 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 06:20:03,444 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:03,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:03,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1333444051, now seen corresponding path program 1 times [2022-01-10 06:20:03,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:03,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [161142320] [2022-01-10 06:20:03,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:03,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:03,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:03,446 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 06:20:03,447 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 06:20:03,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:03,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:20:03,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:03,743 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:20:03,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:03,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:03,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [161142320] [2022-01-10 06:20:03,744 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [161142320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:03,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:03,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:20:03,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420951295] [2022-01-10 06:20:03,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:03,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:20:03,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:03,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:20:03,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:20:03,745 INFO L87 Difference]: Start difference. First operand 785 states and 1335 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:03,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:03,778 INFO L93 Difference]: Finished difference Result 1916 states and 3304 transitions. [2022-01-10 06:20:03,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:20:03,779 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 106 [2022-01-10 06:20:03,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:03,783 INFO L225 Difference]: With dead ends: 1916 [2022-01-10 06:20:03,783 INFO L226 Difference]: Without dead ends: 1196 [2022-01-10 06:20:03,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 104 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 06:20:03,785 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 88 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 672 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 06:20:03,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 672 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:03,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2022-01-10 06:20:03,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1188. [2022-01-10 06:20:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 1083 states have (on average 1.7202216066481995) internal successors, (1863), 1087 states have internal predecessors, (1863), 88 states have call successors, (88), 14 states have call predecessors, (88), 16 states have return successors, (90), 86 states have call predecessors, (90), 87 states have call successors, (90) [2022-01-10 06:20:03,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 2041 transitions. [2022-01-10 06:20:03,819 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 2041 transitions. Word has length 106 [2022-01-10 06:20:03,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:03,819 INFO L470 AbstractCegarLoop]: Abstraction has 1188 states and 2041 transitions. [2022-01-10 06:20:03,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:03,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 2041 transitions. [2022-01-10 06:20:03,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 06:20:03,822 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:03,822 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:03,845 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 06:20:04,030 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 06:20:04,031 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:04,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:04,031 INFO L85 PathProgramCache]: Analyzing trace with hash -65921600, now seen corresponding path program 1 times [2022-01-10 06:20:04,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:04,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197369313] [2022-01-10 06:20:04,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:04,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:04,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:04,044 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 06:20:04,047 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 06:20:04,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:04,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:20:04,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:04,358 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:20:04,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:04,358 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:04,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197369313] [2022-01-10 06:20:04,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197369313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:04,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:04,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:20:04,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403455259] [2022-01-10 06:20:04,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:04,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:20:04,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:04,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:20:04,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:20:04,359 INFO L87 Difference]: Start difference. First operand 1188 states and 2041 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:04,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:04,432 INFO L93 Difference]: Finished difference Result 2921 states and 5075 transitions. [2022-01-10 06:20:04,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:20:04,433 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 107 [2022-01-10 06:20:04,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:04,440 INFO L225 Difference]: With dead ends: 2921 [2022-01-10 06:20:04,440 INFO L226 Difference]: Without dead ends: 1846 [2022-01-10 06:20:04,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 105 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 06:20:04,443 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 86 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 679 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 06:20:04,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 679 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:04,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1846 states. [2022-01-10 06:20:04,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1846 to 1838. [2022-01-10 06:20:04,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1838 states, 1694 states have (on average 1.7207792207792207) internal successors, (2915), 1698 states have internal predecessors, (2915), 127 states have call successors, (127), 14 states have call predecessors, (127), 16 states have return successors, (129), 125 states have call predecessors, (129), 126 states have call successors, (129) [2022-01-10 06:20:04,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 3171 transitions. [2022-01-10 06:20:04,514 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 3171 transitions. Word has length 107 [2022-01-10 06:20:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:04,515 INFO L470 AbstractCegarLoop]: Abstraction has 1838 states and 3171 transitions. [2022-01-10 06:20:04,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:04,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 3171 transitions. [2022-01-10 06:20:04,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 06:20:04,520 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:04,520 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:04,530 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 06:20:04,729 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 06:20:04,730 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:04,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:04,730 INFO L85 PathProgramCache]: Analyzing trace with hash -2142427307, now seen corresponding path program 1 times [2022-01-10 06:20:04,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:04,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730669155] [2022-01-10 06:20:04,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:04,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:04,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:04,732 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 06:20:04,733 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 06:20:04,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:04,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:20:04,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:05,038 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:20:05,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:05,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:05,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730669155] [2022-01-10 06:20:05,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730669155] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:05,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:05,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:20:05,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747887899] [2022-01-10 06:20:05,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:05,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:20:05,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:05,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:20:05,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:20:05,040 INFO L87 Difference]: Start difference. First operand 1838 states and 3171 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:05,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:05,098 INFO L93 Difference]: Finished difference Result 4576 states and 7975 transitions. [2022-01-10 06:20:05,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:20:05,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 108 [2022-01-10 06:20:05,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:05,109 INFO L225 Difference]: With dead ends: 4576 [2022-01-10 06:20:05,110 INFO L226 Difference]: Without dead ends: 2931 [2022-01-10 06:20:05,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 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 06:20:05,115 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 84 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 679 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 06:20:05,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 679 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:05,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2931 states. [2022-01-10 06:20:05,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2931 to 2923. [2022-01-10 06:20:05,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2713 states have (on average 1.7176557316623664) internal successors, (4660), 2717 states have internal predecessors, (4660), 193 states have call successors, (193), 14 states have call predecessors, (193), 16 states have return successors, (195), 191 states have call predecessors, (195), 192 states have call successors, (195) [2022-01-10 06:20:05,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 5048 transitions. [2022-01-10 06:20:05,240 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 5048 transitions. Word has length 108 [2022-01-10 06:20:05,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:05,241 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 5048 transitions. [2022-01-10 06:20:05,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:05,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 5048 transitions. [2022-01-10 06:20:05,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-01-10 06:20:05,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:05,251 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:05,260 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 06:20:05,460 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 06:20:05,460 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:05,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:05,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1459544126, now seen corresponding path program 1 times [2022-01-10 06:20:05,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:05,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440785681] [2022-01-10 06:20:05,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:05,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:05,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:05,469 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 06:20:05,483 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 06:20:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:05,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:20:05,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:05,778 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:20:05,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:05,779 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:05,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440785681] [2022-01-10 06:20:05,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440785681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:05,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:05,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:20:05,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372682837] [2022-01-10 06:20:05,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:05,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:20:05,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:05,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:20:05,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:20:05,780 INFO L87 Difference]: Start difference. First operand 2923 states and 5048 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:05,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:05,872 INFO L93 Difference]: Finished difference Result 7156 states and 12515 transitions. [2022-01-10 06:20:05,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:20:05,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 109 [2022-01-10 06:20:05,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:05,894 INFO L225 Difference]: With dead ends: 7156 [2022-01-10 06:20:05,894 INFO L226 Difference]: Without dead ends: 4626 [2022-01-10 06:20:05,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 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 06:20:05,902 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 82 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 664 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 06:20:05,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 664 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:05,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2022-01-10 06:20:06,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 4618. [2022-01-10 06:20:06,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4618 states, 4291 states have (on average 1.718247494756467) internal successors, (7373), 4295 states have internal predecessors, (7373), 310 states have call successors, (310), 14 states have call predecessors, (310), 16 states have return successors, (312), 308 states have call predecessors, (312), 309 states have call successors, (312) [2022-01-10 06:20:06,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4618 states to 4618 states and 7995 transitions. [2022-01-10 06:20:06,087 INFO L78 Accepts]: Start accepts. Automaton has 4618 states and 7995 transitions. Word has length 109 [2022-01-10 06:20:06,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:06,087 INFO L470 AbstractCegarLoop]: Abstraction has 4618 states and 7995 transitions. [2022-01-10 06:20:06,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:06,087 INFO L276 IsEmpty]: Start isEmpty. Operand 4618 states and 7995 transitions. [2022-01-10 06:20:06,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-10 06:20:06,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:06,099 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:06,123 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 06:20:06,309 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 06:20:06,309 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:06,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:06,310 INFO L85 PathProgramCache]: Analyzing trace with hash -512212777, now seen corresponding path program 1 times [2022-01-10 06:20:06,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:06,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570394524] [2022-01-10 06:20:06,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:06,310 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:06,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:06,336 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 06:20:06,360 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 06:20:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:06,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:20:06,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:20:06,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:06,633 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:06,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570394524] [2022-01-10 06:20:06,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570394524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:06,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:06,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:20:06,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568695626] [2022-01-10 06:20:06,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:06,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:20:06,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:06,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:20:06,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:20:06,641 INFO L87 Difference]: Start difference. First operand 4618 states and 7995 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:06,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:06,787 INFO L93 Difference]: Finished difference Result 11943 states and 20878 transitions. [2022-01-10 06:20:06,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:20:06,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 110 [2022-01-10 06:20:06,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:06,813 INFO L225 Difference]: With dead ends: 11943 [2022-01-10 06:20:06,813 INFO L226 Difference]: Without dead ends: 7886 [2022-01-10 06:20:06,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 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 06:20:06,822 INFO L933 BasicCegarLoop]: 340 mSDtfsCounter, 80 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 672 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 06:20:06,823 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 672 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:06,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7886 states. [2022-01-10 06:20:07,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7886 to 7878. [2022-01-10 06:20:07,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7878 states, 7335 states have (on average 1.713019768234492) internal successors, (12565), 7339 states have internal predecessors, (12565), 526 states have call successors, (526), 14 states have call predecessors, (526), 16 states have return successors, (528), 524 states have call predecessors, (528), 525 states have call successors, (528) [2022-01-10 06:20:07,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7878 states to 7878 states and 13619 transitions. [2022-01-10 06:20:07,197 INFO L78 Accepts]: Start accepts. Automaton has 7878 states and 13619 transitions. Word has length 110 [2022-01-10 06:20:07,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:07,197 INFO L470 AbstractCegarLoop]: Abstraction has 7878 states and 13619 transitions. [2022-01-10 06:20:07,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:07,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7878 states and 13619 transitions. [2022-01-10 06:20:07,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 06:20:07,247 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:07,247 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:07,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:20:07,456 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 06:20:07,457 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:07,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:07,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1093396272, now seen corresponding path program 1 times [2022-01-10 06:20:07,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:07,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [69843875] [2022-01-10 06:20:07,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:07,458 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:07,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:07,459 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 06:20:07,461 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 06:20:07,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:07,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:20:07,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:20:07,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:07,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:07,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [69843875] [2022-01-10 06:20:07,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [69843875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:07,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:07,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:20:07,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395676772] [2022-01-10 06:20:07,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:07,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:20:07,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:07,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:20:07,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:20:07,815 INFO L87 Difference]: Start difference. First operand 7878 states and 13619 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:08,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:08,131 INFO L93 Difference]: Finished difference Result 18038 states and 31165 transitions. [2022-01-10 06:20:08,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:20:08,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 111 [2022-01-10 06:20:08,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:08,177 INFO L225 Difference]: With dead ends: 18038 [2022-01-10 06:20:08,178 INFO L226 Difference]: Without dead ends: 11497 [2022-01-10 06:20:08,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 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 06:20:08,193 INFO L933 BasicCegarLoop]: 337 mSDtfsCounter, 78 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 639 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 06:20:08,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 639 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:08,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11497 states. [2022-01-10 06:20:08,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11497 to 11489. [2022-01-10 06:20:08,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11489 states, 10946 states have (on average 1.6890188196601499) internal successors, (18488), 10950 states have internal predecessors, (18488), 526 states have call successors, (526), 14 states have call predecessors, (526), 16 states have return successors, (528), 524 states have call predecessors, (528), 525 states have call successors, (528) [2022-01-10 06:20:08,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11489 states to 11489 states and 19542 transitions. [2022-01-10 06:20:08,629 INFO L78 Accepts]: Start accepts. Automaton has 11489 states and 19542 transitions. Word has length 111 [2022-01-10 06:20:08,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:08,629 INFO L470 AbstractCegarLoop]: Abstraction has 11489 states and 19542 transitions. [2022-01-10 06:20:08,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:08,629 INFO L276 IsEmpty]: Start isEmpty. Operand 11489 states and 19542 transitions. [2022-01-10 06:20:08,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 06:20:08,652 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:08,653 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:08,664 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 06:20:08,862 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 06:20:08,863 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:08,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:08,863 INFO L85 PathProgramCache]: Analyzing trace with hash 874441945, now seen corresponding path program 1 times [2022-01-10 06:20:08,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:08,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182414240] [2022-01-10 06:20:08,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:08,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:08,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:08,865 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 06:20:08,867 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 06:20:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:09,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:20:09,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:20:09,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:09,169 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:09,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182414240] [2022-01-10 06:20:09,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182414240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:09,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:09,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:20:09,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199509760] [2022-01-10 06:20:09,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:09,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:20:09,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:09,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:20:09,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:20:09,171 INFO L87 Difference]: Start difference. First operand 11489 states and 19542 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:09,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:09,769 INFO L93 Difference]: Finished difference Result 30588 states and 52301 transitions. [2022-01-10 06:20:09,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:20:09,769 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 112 [2022-01-10 06:20:09,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:09,824 INFO L225 Difference]: With dead ends: 30588 [2022-01-10 06:20:09,824 INFO L226 Difference]: Without dead ends: 20759 [2022-01-10 06:20:09,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 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 06:20:09,848 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 76 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 679 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 06:20:09,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 679 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:09,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20759 states. [2022-01-10 06:20:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20759 to 20751. [2022-01-10 06:20:10,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20751 states, 19797 states have (on average 1.677829974238521) internal successors, (33216), 19801 states have internal predecessors, (33216), 937 states have call successors, (937), 14 states have call predecessors, (937), 16 states have return successors, (939), 935 states have call predecessors, (939), 936 states have call successors, (939) [2022-01-10 06:20:10,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20751 states to 20751 states and 35092 transitions. [2022-01-10 06:20:10,561 INFO L78 Accepts]: Start accepts. Automaton has 20751 states and 35092 transitions. Word has length 112 [2022-01-10 06:20:10,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:10,562 INFO L470 AbstractCegarLoop]: Abstraction has 20751 states and 35092 transitions. [2022-01-10 06:20:10,562 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, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand 20751 states and 35092 transitions. [2022-01-10 06:20:10,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 06:20:10,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:10,592 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:10,619 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 06:20:10,801 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 06:20:10,801 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:10,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:10,802 INFO L85 PathProgramCache]: Analyzing trace with hash 292262124, now seen corresponding path program 2 times [2022-01-10 06:20:10,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:10,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525466139] [2022-01-10 06:20:10,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:20:10,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:10,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:10,816 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 06:20:10,848 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 06:20:10,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:20:10,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:20:10,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:20:10,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-01-10 06:20:11,180 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:11,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:11,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525466139] [2022-01-10 06:20:11,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525466139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:11,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:11,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:20:11,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119841870] [2022-01-10 06:20:11,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:11,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:20:11,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:11,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:20:11,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:20:11,182 INFO L87 Difference]: Start difference. First operand 20751 states and 35092 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:12,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:12,063 INFO L93 Difference]: Finished difference Result 39748 states and 67331 transitions. [2022-01-10 06:20:12,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:20:12,063 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 112 [2022-01-10 06:20:12,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:12,297 INFO L225 Difference]: With dead ends: 39748 [2022-01-10 06:20:12,298 INFO L226 Difference]: Without dead ends: 39624 [2022-01-10 06:20:12,314 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:20:12,315 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 292 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:20:12,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 1413 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:12,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39624 states. [2022-01-10 06:20:13,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39624 to 39606. [2022-01-10 06:20:13,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39606 states, 37792 states have (on average 1.6817051227773074) internal successors, (63555), 37798 states have internal predecessors, (63555), 1784 states have call successors, (1784), 27 states have call predecessors, (1784), 29 states have return successors, (1785), 1780 states have call predecessors, (1785), 1782 states have call successors, (1785) [2022-01-10 06:20:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39606 states to 39606 states and 67124 transitions. [2022-01-10 06:20:13,615 INFO L78 Accepts]: Start accepts. Automaton has 39606 states and 67124 transitions. Word has length 112 [2022-01-10 06:20:13,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:13,616 INFO L470 AbstractCegarLoop]: Abstraction has 39606 states and 67124 transitions. [2022-01-10 06:20:13,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:13,616 INFO L276 IsEmpty]: Start isEmpty. Operand 39606 states and 67124 transitions. [2022-01-10 06:20:13,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-01-10 06:20:13,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:13,669 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:13,678 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 06:20:13,878 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 06:20:13,879 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:13,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:13,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2033710098, now seen corresponding path program 1 times [2022-01-10 06:20:13,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:13,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584126460] [2022-01-10 06:20:13,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:13,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:13,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:13,904 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 06:20:13,935 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 06:20:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:14,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:20:14,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:14,240 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 06:20:14,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:14,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:14,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584126460] [2022-01-10 06:20:14,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1584126460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:14,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:14,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:20:14,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553975713] [2022-01-10 06:20:14,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:14,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:20:14,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:14,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:20:14,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:20:14,243 INFO L87 Difference]: Start difference. First operand 39606 states and 67124 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:15,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:15,337 INFO L93 Difference]: Finished difference Result 76017 states and 129162 transitions. [2022-01-10 06:20:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:20:15,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 113 [2022-01-10 06:20:15,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:15,449 INFO L225 Difference]: With dead ends: 76017 [2022-01-10 06:20:15,449 INFO L226 Difference]: Without dead ends: 39622 [2022-01-10 06:20:15,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 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 06:20:15,508 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 91 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:20:15,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 768 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:15,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39622 states. [2022-01-10 06:20:16,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39622 to 39606. [2022-01-10 06:20:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39606 states, 37792 states have (on average 1.667866215071973) internal successors, (63032), 37798 states have internal predecessors, (63032), 1784 states have call successors, (1784), 27 states have call predecessors, (1784), 29 states have return successors, (1785), 1780 states have call predecessors, (1785), 1782 states have call successors, (1785) [2022-01-10 06:20:16,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39606 states to 39606 states and 66601 transitions. [2022-01-10 06:20:16,830 INFO L78 Accepts]: Start accepts. Automaton has 39606 states and 66601 transitions. Word has length 113 [2022-01-10 06:20:16,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:16,830 INFO L470 AbstractCegarLoop]: Abstraction has 39606 states and 66601 transitions. [2022-01-10 06:20:16,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:16,831 INFO L276 IsEmpty]: Start isEmpty. Operand 39606 states and 66601 transitions. [2022-01-10 06:20:16,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-01-10 06:20:16,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:16,882 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:17,071 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 06:20:17,090 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 06:20:17,090 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:17,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:17,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1594838232, now seen corresponding path program 1 times [2022-01-10 06:20:17,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:17,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988647309] [2022-01-10 06:20:17,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:17,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:17,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:17,092 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 06:20:17,094 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 06:20:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:17,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:20:17,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:20:17,403 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:17,403 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:17,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988647309] [2022-01-10 06:20:17,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988647309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:17,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:17,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:20:17,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999761669] [2022-01-10 06:20:17,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:17,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:20:17,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:17,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:20:17,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:20:17,406 INFO L87 Difference]: Start difference. First operand 39606 states and 66601 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:19,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:19,048 INFO L93 Difference]: Finished difference Result 111261 states and 187462 transitions. [2022-01-10 06:20:19,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:20:19,049 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 114 [2022-01-10 06:20:19,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:19,377 INFO L225 Difference]: With dead ends: 111261 [2022-01-10 06:20:19,377 INFO L226 Difference]: Without dead ends: 74705 [2022-01-10 06:20:19,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 112 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 06:20:19,435 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 74 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 679 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 06:20:19,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 679 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:19,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74705 states. [2022-01-10 06:20:21,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74705 to 74689. [2022-01-10 06:20:21,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74689 states, 71303 states have (on average 1.652469040573328) internal successors, (117826), 71309 states have internal predecessors, (117826), 3356 states have call successors, (3356), 27 states have call predecessors, (3356), 29 states have return successors, (3357), 3352 states have call predecessors, (3357), 3354 states have call successors, (3357) [2022-01-10 06:20:22,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74689 states to 74689 states and 124539 transitions. [2022-01-10 06:20:22,296 INFO L78 Accepts]: Start accepts. Automaton has 74689 states and 124539 transitions. Word has length 114 [2022-01-10 06:20:22,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:22,296 INFO L470 AbstractCegarLoop]: Abstraction has 74689 states and 124539 transitions. [2022-01-10 06:20:22,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:22,298 INFO L276 IsEmpty]: Start isEmpty. Operand 74689 states and 124539 transitions. [2022-01-10 06:20:22,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-01-10 06:20:22,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:22,373 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:22,388 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 06:20:22,582 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 06:20:22,582 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:22,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:22,583 INFO L85 PathProgramCache]: Analyzing trace with hash 152957187, now seen corresponding path program 1 times [2022-01-10 06:20:22,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:22,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [888007527] [2022-01-10 06:20:22,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:22,583 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:22,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:22,584 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 06:20:22,588 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 06:20:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:22,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:20:22,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:22,948 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-10 06:20:22,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:22,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:22,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [888007527] [2022-01-10 06:20:22,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [888007527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:22,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:22,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:20:22,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440982126] [2022-01-10 06:20:22,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:22,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:20:22,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:22,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:20:22,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:20:22,952 INFO L87 Difference]: Start difference. First operand 74689 states and 124539 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:26,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:26,361 INFO L93 Difference]: Finished difference Result 142900 states and 238095 transitions. [2022-01-10 06:20:26,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:20:26,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 115 [2022-01-10 06:20:26,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:26,780 INFO L225 Difference]: With dead ends: 142900 [2022-01-10 06:20:26,780 INFO L226 Difference]: Without dead ends: 142634 [2022-01-10 06:20:26,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 113 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 06:20:26,821 INFO L933 BasicCegarLoop]: 346 mSDtfsCounter, 72 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 679 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 06:20:26,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 679 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:26,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142634 states. [2022-01-10 06:20:31,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142634 to 142618. [2022-01-10 06:20:31,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142618 states, 136121 states have (on average 1.63558157815473) internal successors, (222637), 136127 states have internal predecessors, (222637), 6467 states have call successors, (6467), 27 states have call predecessors, (6467), 29 states have return successors, (6468), 6463 states have call predecessors, (6468), 6465 states have call successors, (6468) [2022-01-10 06:20:31,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142618 states to 142618 states and 235572 transitions. [2022-01-10 06:20:31,939 INFO L78 Accepts]: Start accepts. Automaton has 142618 states and 235572 transitions. Word has length 115 [2022-01-10 06:20:31,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:31,939 INFO L470 AbstractCegarLoop]: Abstraction has 142618 states and 235572 transitions. [2022-01-10 06:20:31,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:31,939 INFO L276 IsEmpty]: Start isEmpty. Operand 142618 states and 235572 transitions. [2022-01-10 06:20:32,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-01-10 06:20:32,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:32,014 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:32,023 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 06:20:32,222 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 06:20:32,223 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:32,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:32,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1657934870, now seen corresponding path program 1 times [2022-01-10 06:20:32,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:32,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996623559] [2022-01-10 06:20:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:32,224 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:32,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:32,225 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 06:20:32,226 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 06:20:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:32,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-10 06:20:32,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 06:20:32,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:32,624 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:32,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996623559] [2022-01-10 06:20:32,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996623559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:32,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:32,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 06:20:32,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476989368] [2022-01-10 06:20:32,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:32,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 06:20:32,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 06:20:32,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-01-10 06:20:32,625 INFO L87 Difference]: Start difference. First operand 142618 states and 235572 transitions. Second operand has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 10 states have internal predecessors, (90), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-01-10 06:20:37,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:37,065 INFO L93 Difference]: Finished difference Result 143446 states and 236798 transitions. [2022-01-10 06:20:37,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 06:20:37,066 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 10 states have internal predecessors, (90), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 116 [2022-01-10 06:20:37,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:37,703 INFO L225 Difference]: With dead ends: 143446 [2022-01-10 06:20:37,704 INFO L226 Difference]: Without dead ends: 143194 [2022-01-10 06:20:37,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2022-01-10 06:20:37,753 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 761 mSDsluCounter, 3182 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 3570 SdHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 06:20:37,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 3570 Invalid, 901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 06:20:37,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143194 states. [2022-01-10 06:20:42,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143194 to 142986. [2022-01-10 06:20:42,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142986 states, 136395 states have (on average 1.6350526045676161) internal successors, (223013), 136406 states have internal predecessors, (223013), 6533 states have call successors, (6533), 48 states have call predecessors, (6533), 57 states have return successors, (6576), 6531 states have call predecessors, (6576), 6529 states have call successors, (6576) [2022-01-10 06:20:42,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142986 states to 142986 states and 236122 transitions. [2022-01-10 06:20:42,965 INFO L78 Accepts]: Start accepts. Automaton has 142986 states and 236122 transitions. Word has length 116 [2022-01-10 06:20:42,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:20:42,965 INFO L470 AbstractCegarLoop]: Abstraction has 142986 states and 236122 transitions. [2022-01-10 06:20:42,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.181818181818182) internal successors, (90), 10 states have internal predecessors, (90), 5 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2022-01-10 06:20:42,965 INFO L276 IsEmpty]: Start isEmpty. Operand 142986 states and 236122 transitions. [2022-01-10 06:20:43,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-01-10 06:20:43,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:20:43,054 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:20:43,065 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 06:20:43,263 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 06:20:43,263 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoing__wrappee__AutoResponderErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:20:43,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:20:43,279 INFO L85 PathProgramCache]: Analyzing trace with hash 978170001, now seen corresponding path program 1 times [2022-01-10 06:20:43,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:20:43,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766380030] [2022-01-10 06:20:43,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:20:43,279 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:20:43,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:20:43,289 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 06:20:43,290 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 06:20:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:20:43,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:20:43,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:20:43,603 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-10 06:20:43,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:20:43,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:20:43,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766380030] [2022-01-10 06:20:43,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766380030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:20:43,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:20:43,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:20:43,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237545510] [2022-01-10 06:20:43,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:20:43,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:20:43,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:20:43,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:20:43,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:20:43,604 INFO L87 Difference]: Start difference. First operand 142986 states and 236122 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:20:50,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:20:50,630 INFO L93 Difference]: Finished difference Result 282160 states and 466345 transitions. [2022-01-10 06:20:50,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 06:20:50,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 117 [2022-01-10 06:20:50,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:20:51,804 INFO L225 Difference]: With dead ends: 282160 [2022-01-10 06:20:51,804 INFO L226 Difference]: Without dead ends: 281552 [2022-01-10 06:20:51,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 06:20:51,898 INFO L933 BasicCegarLoop]: 372 mSDtfsCounter, 262 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 1418 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:20:51,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 1418 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:20:52,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281552 states. [2022-01-10 06:21:01,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281552 to 281426. [2022-01-10 06:21:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281426 states, 268449 states have (on average 1.636869572991518) internal successors, (439416), 268470 states have internal predecessors, (439416), 12865 states have call successors, (12865), 94 states have call predecessors, (12865), 111 states have return successors, (12950), 12861 states have call predecessors, (12950), 12857 states have call successors, (12950)