/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/email_spec3_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:55:34,498 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:55:34,500 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:55:34,546 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:55:34,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:55:34,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:55:34,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:55:34,549 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:55:34,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:55:34,551 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:55:34,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:55:34,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:55:34,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:55:34,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:55:34,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:55:34,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:55:34,554 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:55:34,555 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:55:34,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:55:34,557 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:55:34,558 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:55:34,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:55:34,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:55:34,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:55:34,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:55:34,562 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:55:34,562 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:55:34,563 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:55:34,563 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:55:34,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:55:34,564 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:55:34,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:55:34,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:55:34,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:55:34,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:55:34,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:55:34,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:55:34,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:55:34,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:55:34,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:55:34,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:55:34,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:55:34,584 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:55:34,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:55:34,584 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:55:34,585 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:55:34,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:55:34,585 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:55:34,586 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:55:34,586 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:55:34,586 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:55:34,586 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:55:34,586 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:55:34,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:55:34,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:55:34,586 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:55:34,586 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:55:34,587 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:55:34,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:55:34,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:55:34,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:55:34,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:55:34,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:55:34,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:55:34,587 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:55:34,587 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:55:34,587 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:55:34,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:55:34,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:55:34,588 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:55:34,588 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:55:34,588 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:55:34,588 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:55:34,588 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:55:34,589 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:55:34,589 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:55:34,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:55:34,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:55:34,797 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:55:34,798 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:55:34,798 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:55:34,799 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product31.cil.c [2022-01-10 23:55:34,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89712748e/aae24d934c8a4bd8a47529283850f683/FLAG99879084c [2022-01-10 23:55:35,280 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:55:35,281 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product31.cil.c [2022-01-10 23:55:35,299 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89712748e/aae24d934c8a4bd8a47529283850f683/FLAG99879084c [2022-01-10 23:55:35,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89712748e/aae24d934c8a4bd8a47529283850f683 [2022-01-10 23:55:35,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:55:35,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:55:35,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:55:35,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:55:35,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:55:35,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:55:35" (1/1) ... [2022-01-10 23:55:35,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75bb534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:55:35, skipping insertion in model container [2022-01-10 23:55:35,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:55:35" (1/1) ... [2022-01-10 23:55:35,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:55:35,403 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:55:35,708 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_spec3_product31.cil.c[42138,42151] [2022-01-10 23:55:35,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:55:35,797 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:55:35,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:55:35,854 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_spec3_product31.cil.c[42138,42151] [2022-01-10 23:55:35,887 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:55:35,891 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:55:35,940 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_spec3_product31.cil.c[42138,42151] [2022-01-10 23:55:35,958 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:55:35,982 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:55:35,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:55:35 WrapperNode [2022-01-10 23:55:35,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:55:35,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:55:35,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:55:35,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:55:35,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:55:35" (1/1) ... [2022-01-10 23:55:36,013 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:55:35" (1/1) ... [2022-01-10 23:55:36,066 INFO L137 Inliner]: procedures = 134, calls = 227, calls flagged for inlining = 134, calls inlined = 197, statements flattened = 3021 [2022-01-10 23:55:36,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:55:36,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:55:36,079 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:55:36,079 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:55:36,085 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:55:35" (1/1) ... [2022-01-10 23:55:36,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:55:35" (1/1) ... [2022-01-10 23:55:36,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:55:35" (1/1) ... [2022-01-10 23:55:36,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:55:35" (1/1) ... [2022-01-10 23:55:36,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:55:35" (1/1) ... [2022-01-10 23:55:36,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:55:35" (1/1) ... [2022-01-10 23:55:36,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:55:35" (1/1) ... [2022-01-10 23:55:36,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:55:36,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:55:36,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:55:36,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:55:36,204 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:55:35" (1/1) ... [2022-01-10 23:55:36,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:55:36,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:55:36,227 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 23:55:36,248 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 23:55:36,257 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:55:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:55:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:55:36,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:55:36,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:55:36,475 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:55:36,476 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:55:37,595 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:55:37,619 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:55:37,620 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:55:37,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:55:37 BoogieIcfgContainer [2022-01-10 23:55:37,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:55:37,623 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:55:37,623 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:55:37,624 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:55:37,626 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:55:37" (1/1) ... [2022-01-10 23:55:37,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:55:37 BasicIcfg [2022-01-10 23:55:37,953 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:55:37,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:55:37,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:55:37,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:55:37,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:55:35" (1/4) ... [2022-01-10 23:55:37,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc0b731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:55:37, skipping insertion in model container [2022-01-10 23:55:37,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:55:35" (2/4) ... [2022-01-10 23:55:37,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc0b731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:55:37, skipping insertion in model container [2022-01-10 23:55:37,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:55:37" (3/4) ... [2022-01-10 23:55:37,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc0b731 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:55:37, skipping insertion in model container [2022-01-10 23:55:37,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:55:37" (4/4) ... [2022-01-10 23:55:37,960 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec3_product31.cil.cTransformedIcfg [2022-01-10 23:55:37,966 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:55:37,966 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-10 23:55:38,010 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:55:38,015 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 23:55:38,016 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-10 23:55:38,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 656 states, 651 states have (on average 1.6820276497695852) internal successors, (1095), 655 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:38,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 23:55:38,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:38,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:38,055 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:55:38,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:38,059 INFO L85 PathProgramCache]: Analyzing trace with hash -393045597, now seen corresponding path program 1 times [2022-01-10 23:55:38,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:38,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580880420] [2022-01-10 23:55:38,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:38,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:38,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:38,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580880420] [2022-01-10 23:55:38,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580880420] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:38,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:38,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:55:38,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148740014] [2022-01-10 23:55:38,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:38,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:55:38,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:38,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:55:38,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:55:38,380 INFO L87 Difference]: Start difference. First operand has 656 states, 651 states have (on average 1.6820276497695852) internal successors, (1095), 655 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:38,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:38,431 INFO L93 Difference]: Finished difference Result 1049 states and 1728 transitions. [2022-01-10 23:55:38,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:55:38,437 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 23:55:38,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:38,451 INFO L225 Difference]: With dead ends: 1049 [2022-01-10 23:55:38,451 INFO L226 Difference]: Without dead ends: 555 [2022-01-10 23:55:38,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 23:55:38,457 INFO L933 BasicCegarLoop]: 1085 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, 1085 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 23:55:38,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:55:38,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-01-10 23:55:38,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2022-01-10 23:55:38,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 551 states have (on average 1.6950998185117967) internal successors, (934), 554 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 934 transitions. [2022-01-10 23:55:38,527 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 934 transitions. Word has length 64 [2022-01-10 23:55:38,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:38,528 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 934 transitions. [2022-01-10 23:55:38,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:38,529 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 934 transitions. [2022-01-10 23:55:38,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 23:55:38,532 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:38,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:38,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:55:38,533 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:55:38,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:38,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1161511353, now seen corresponding path program 1 times [2022-01-10 23:55:38,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:38,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694785679] [2022-01-10 23:55:38,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:38,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:38,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:38,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:38,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694785679] [2022-01-10 23:55:38,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694785679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:38,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:38,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:55:38,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960965623] [2022-01-10 23:55:38,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:38,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:55:38,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:38,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:55:38,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:55:38,753 INFO L87 Difference]: Start difference. First operand 555 states and 934 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:38,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:38,827 INFO L93 Difference]: Finished difference Result 1091 states and 1840 transitions. [2022-01-10 23:55:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:55:38,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 23:55:38,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:38,831 INFO L225 Difference]: With dead ends: 1091 [2022-01-10 23:55:38,831 INFO L226 Difference]: Without dead ends: 555 [2022-01-10 23:55:38,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 23:55:38,837 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 909 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:55:38,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 928 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:55:38,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-01-10 23:55:38,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 555. [2022-01-10 23:55:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 551 states have (on average 1.691470054446461) internal successors, (932), 554 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 932 transitions. [2022-01-10 23:55:38,858 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 932 transitions. Word has length 65 [2022-01-10 23:55:38,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:38,859 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 932 transitions. [2022-01-10 23:55:38,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:38,861 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 932 transitions. [2022-01-10 23:55:38,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:55:38,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:38,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:38,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:55:38,870 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:55:38,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:38,871 INFO L85 PathProgramCache]: Analyzing trace with hash 343903289, now seen corresponding path program 1 times [2022-01-10 23:55:38,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:38,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800227511] [2022-01-10 23:55:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:38,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:39,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:39,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:39,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800227511] [2022-01-10 23:55:39,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800227511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:39,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:39,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:55:39,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630878800] [2022-01-10 23:55:39,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:39,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:55:39,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:39,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:55:39,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:55:39,011 INFO L87 Difference]: Start difference. First operand 555 states and 932 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:39,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:39,260 INFO L93 Difference]: Finished difference Result 2643 states and 4456 transitions. [2022-01-10 23:55:39,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:55:39,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 23:55:39,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:39,270 INFO L225 Difference]: With dead ends: 2643 [2022-01-10 23:55:39,270 INFO L226 Difference]: Without dead ends: 2112 [2022-01-10 23:55:39,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:55:39,277 INFO L933 BasicCegarLoop]: 1787 mSDtfsCounter, 4443 mSDsluCounter, 2668 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4443 SdHoareTripleChecker+Valid, 4455 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:55:39,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4443 Valid, 4455 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:55:39,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2022-01-10 23:55:39,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 555. [2022-01-10 23:55:39,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 551 states have (on average 1.6896551724137931) internal successors, (931), 554 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:39,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 931 transitions. [2022-01-10 23:55:39,337 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 931 transitions. Word has length 67 [2022-01-10 23:55:39,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:39,337 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 931 transitions. [2022-01-10 23:55:39,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:39,338 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 931 transitions. [2022-01-10 23:55:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:55:39,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:39,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:39,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:55:39,340 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:55:39,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:39,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1786380791, now seen corresponding path program 1 times [2022-01-10 23:55:39,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:39,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395881374] [2022-01-10 23:55:39,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:39,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:39,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:39,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:39,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395881374] [2022-01-10 23:55:39,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395881374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:39,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:39,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:55:39,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096500523] [2022-01-10 23:55:39,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:39,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:55:39,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:39,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:55:39,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:55:39,464 INFO L87 Difference]: Start difference. First operand 555 states and 931 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:39,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:39,504 INFO L93 Difference]: Finished difference Result 1095 states and 1840 transitions. [2022-01-10 23:55:39,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:55:39,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-10 23:55:39,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:39,506 INFO L225 Difference]: With dead ends: 1095 [2022-01-10 23:55:39,506 INFO L226 Difference]: Without dead ends: 569 [2022-01-10 23:55:39,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 23:55:39,508 INFO L933 BasicCegarLoop]: 945 mSDtfsCounter, 910 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:55:39,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [910 Valid, 967 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:55:39,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-01-10 23:55:39,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 555. [2022-01-10 23:55:39,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 551 states have (on average 1.6878402903811252) internal successors, (930), 554 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:39,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 930 transitions. [2022-01-10 23:55:39,530 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 930 transitions. Word has length 68 [2022-01-10 23:55:39,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:39,530 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 930 transitions. [2022-01-10 23:55:39,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:39,530 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 930 transitions. [2022-01-10 23:55:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:55:39,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:39,531 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:39,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:55:39,532 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:55:39,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:39,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1529102118, now seen corresponding path program 1 times [2022-01-10 23:55:39,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:39,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535736436] [2022-01-10 23:55:39,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:39,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:39,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:39,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535736436] [2022-01-10 23:55:39,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535736436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:39,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:39,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:55:39,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991023913] [2022-01-10 23:55:39,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:39,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:55:39,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:39,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:55:39,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:55:39,613 INFO L87 Difference]: Start difference. First operand 555 states and 930 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:39,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:39,770 INFO L93 Difference]: Finished difference Result 1599 states and 2690 transitions. [2022-01-10 23:55:39,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:55:39,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 23:55:39,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:39,774 INFO L225 Difference]: With dead ends: 1599 [2022-01-10 23:55:39,774 INFO L226 Difference]: Without dead ends: 1078 [2022-01-10 23:55:39,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:55:39,775 INFO L933 BasicCegarLoop]: 939 mSDtfsCounter, 4366 mSDsluCounter, 953 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4366 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:55:39,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4366 Valid, 1892 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:55:39,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2022-01-10 23:55:39,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 555. [2022-01-10 23:55:39,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 551 states have (on average 1.6842105263157894) internal successors, (928), 554 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:39,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 928 transitions. [2022-01-10 23:55:39,808 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 928 transitions. Word has length 69 [2022-01-10 23:55:39,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:39,809 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 928 transitions. [2022-01-10 23:55:39,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:39,809 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 928 transitions. [2022-01-10 23:55:39,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:55:39,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:39,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:39,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:55:39,810 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:55:39,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:39,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1500146231, now seen corresponding path program 1 times [2022-01-10 23:55:39,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:39,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537256348] [2022-01-10 23:55:39,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:39,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:39,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:39,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:39,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537256348] [2022-01-10 23:55:39,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537256348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:39,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:39,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:55:39,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824754763] [2022-01-10 23:55:39,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:39,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:55:39,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:39,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:55:39,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:55:39,904 INFO L87 Difference]: Start difference. First operand 555 states and 928 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:40,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:40,340 INFO L93 Difference]: Finished difference Result 3691 states and 6080 transitions. [2022-01-10 23:55:40,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:55:40,341 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-01-10 23:55:40,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:40,350 INFO L225 Difference]: With dead ends: 3691 [2022-01-10 23:55:40,351 INFO L226 Difference]: Without dead ends: 3414 [2022-01-10 23:55:40,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:55:40,354 INFO L933 BasicCegarLoop]: 1472 mSDtfsCounter, 6388 mSDsluCounter, 5650 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6388 SdHoareTripleChecker+Valid, 7122 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:55:40,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6388 Valid, 7122 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:55:40,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3414 states. [2022-01-10 23:55:40,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3414 to 1001. [2022-01-10 23:55:40,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 997 states have (on average 1.6860581745235708) internal successors, (1681), 1000 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:40,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1681 transitions. [2022-01-10 23:55:40,418 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1681 transitions. Word has length 71 [2022-01-10 23:55:40,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:40,419 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1681 transitions. [2022-01-10 23:55:40,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:40,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1681 transitions. [2022-01-10 23:55:40,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:55:40,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:40,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:40,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:55:40,422 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:55:40,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:40,423 INFO L85 PathProgramCache]: Analyzing trace with hash 965106585, now seen corresponding path program 1 times [2022-01-10 23:55:40,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:40,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000212228] [2022-01-10 23:55:40,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:40,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:40,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:40,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:40,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000212228] [2022-01-10 23:55:40,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000212228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:40,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:40,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:55:40,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044734523] [2022-01-10 23:55:40,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:40,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:55:40,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:40,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:55:40,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:55:40,507 INFO L87 Difference]: Start difference. First operand 1001 states and 1681 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:41,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:41,055 INFO L93 Difference]: Finished difference Result 6477 states and 10725 transitions. [2022-01-10 23:55:41,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:55:41,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 23:55:41,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:41,075 INFO L225 Difference]: With dead ends: 6477 [2022-01-10 23:55:41,075 INFO L226 Difference]: Without dead ends: 6020 [2022-01-10 23:55:41,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:55:41,081 INFO L933 BasicCegarLoop]: 1946 mSDtfsCounter, 5255 mSDsluCounter, 5206 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5255 SdHoareTripleChecker+Valid, 7152 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:55:41,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5255 Valid, 7152 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:55:41,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6020 states. [2022-01-10 23:55:41,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6020 to 1870. [2022-01-10 23:55:41,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1866 states have (on average 1.6918542336548767) internal successors, (3157), 1869 states have internal predecessors, (3157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:41,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 3157 transitions. [2022-01-10 23:55:41,227 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 3157 transitions. Word has length 72 [2022-01-10 23:55:41,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:41,227 INFO L470 AbstractCegarLoop]: Abstraction has 1870 states and 3157 transitions. [2022-01-10 23:55:41,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:41,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 3157 transitions. [2022-01-10 23:55:41,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:55:41,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:41,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:41,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:55:41,233 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:55:41,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:41,233 INFO L85 PathProgramCache]: Analyzing trace with hash -443518909, now seen corresponding path program 1 times [2022-01-10 23:55:41,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:41,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963838417] [2022-01-10 23:55:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:41,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:41,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:41,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:41,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963838417] [2022-01-10 23:55:41,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963838417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:41,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:41,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:55:41,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135935753] [2022-01-10 23:55:41,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:41,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:55:41,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:41,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:55:41,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:55:41,316 INFO L87 Difference]: Start difference. First operand 1870 states and 3157 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:41,593 INFO L93 Difference]: Finished difference Result 5422 states and 9211 transitions. [2022-01-10 23:55:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:55:41,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 23:55:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:41,604 INFO L225 Difference]: With dead ends: 5422 [2022-01-10 23:55:41,605 INFO L226 Difference]: Without dead ends: 3602 [2022-01-10 23:55:41,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:55:41,608 INFO L933 BasicCegarLoop]: 1759 mSDtfsCounter, 2721 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2721 SdHoareTripleChecker+Valid, 2640 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:55:41,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2721 Valid, 2640 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:55:41,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3602 states. [2022-01-10 23:55:41,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3602 to 1870. [2022-01-10 23:55:41,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1870 states, 1866 states have (on average 1.6907824222936763) internal successors, (3155), 1869 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:41,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1870 states to 1870 states and 3155 transitions. [2022-01-10 23:55:41,714 INFO L78 Accepts]: Start accepts. Automaton has 1870 states and 3155 transitions. Word has length 72 [2022-01-10 23:55:41,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:41,714 INFO L470 AbstractCegarLoop]: Abstraction has 1870 states and 3155 transitions. [2022-01-10 23:55:41,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:41,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1870 states and 3155 transitions. [2022-01-10 23:55:41,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 23:55:41,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:41,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:41,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:55:41,717 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:55:41,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:41,717 INFO L85 PathProgramCache]: Analyzing trace with hash -538143641, now seen corresponding path program 1 times [2022-01-10 23:55:41,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:41,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7582360] [2022-01-10 23:55:41,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:41,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:41,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:41,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:41,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7582360] [2022-01-10 23:55:41,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7582360] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:41,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:41,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:55:41,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083335854] [2022-01-10 23:55:41,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:41,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:55:41,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:41,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:55:41,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:55:41,808 INFO L87 Difference]: Start difference. First operand 1870 states and 3155 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:42,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:42,596 INFO L93 Difference]: Finished difference Result 11994 states and 19955 transitions. [2022-01-10 23:55:42,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:55:42,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 23:55:42,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:42,627 INFO L225 Difference]: With dead ends: 11994 [2022-01-10 23:55:42,627 INFO L226 Difference]: Without dead ends: 11180 [2022-01-10 23:55:42,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:55:42,632 INFO L933 BasicCegarLoop]: 1952 mSDtfsCounter, 5193 mSDsluCounter, 5244 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5193 SdHoareTripleChecker+Valid, 7196 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:55:42,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5193 Valid, 7196 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:55:42,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11180 states. [2022-01-10 23:55:42,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11180 to 3569. [2022-01-10 23:55:42,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3569 states, 3565 states have (on average 1.700140252454418) internal successors, (6061), 3568 states have internal predecessors, (6061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:42,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 6061 transitions. [2022-01-10 23:55:42,906 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 6061 transitions. Word has length 73 [2022-01-10 23:55:42,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:42,906 INFO L470 AbstractCegarLoop]: Abstraction has 3569 states and 6061 transitions. [2022-01-10 23:55:42,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 6061 transitions. [2022-01-10 23:55:42,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 23:55:42,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:42,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:42,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:55:42,911 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:55:42,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:42,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1746719814, now seen corresponding path program 1 times [2022-01-10 23:55:42,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:42,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888803383] [2022-01-10 23:55:42,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:42,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:43,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:43,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:43,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888803383] [2022-01-10 23:55:43,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888803383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:43,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:43,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:55:43,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499360768] [2022-01-10 23:55:43,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:43,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:55:43,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:43,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:55:43,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:55:43,019 INFO L87 Difference]: Start difference. First operand 3569 states and 6061 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:44,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:44,672 INFO L93 Difference]: Finished difference Result 14788 states and 23991 transitions. [2022-01-10 23:55:44,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:55:44,673 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 23:55:44,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:44,702 INFO L225 Difference]: With dead ends: 14788 [2022-01-10 23:55:44,703 INFO L226 Difference]: Without dead ends: 13363 [2022-01-10 23:55:44,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:55:44,709 INFO L933 BasicCegarLoop]: 1490 mSDtfsCounter, 5661 mSDsluCounter, 8259 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5661 SdHoareTripleChecker+Valid, 9749 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 23:55:44,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5661 Valid, 9749 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 23:55:44,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13363 states. [2022-01-10 23:55:45,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13363 to 6972. [2022-01-10 23:55:45,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6972 states, 6968 states have (on average 1.705654420206659) internal successors, (11885), 6971 states have internal predecessors, (11885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:45,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 11885 transitions. [2022-01-10 23:55:45,236 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 11885 transitions. Word has length 73 [2022-01-10 23:55:45,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:45,237 INFO L470 AbstractCegarLoop]: Abstraction has 6972 states and 11885 transitions. [2022-01-10 23:55:45,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:45,237 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 11885 transitions. [2022-01-10 23:55:45,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 23:55:45,246 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:45,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:45,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:55:45,247 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:55:45,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:45,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1468511893, now seen corresponding path program 1 times [2022-01-10 23:55:45,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:45,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747615970] [2022-01-10 23:55:45,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:45,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:45,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:45,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:45,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747615970] [2022-01-10 23:55:45,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747615970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:45,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:45,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:55:45,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187336052] [2022-01-10 23:55:45,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:45,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:55:45,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:45,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:55:45,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:55:45,320 INFO L87 Difference]: Start difference. First operand 6972 states and 11885 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:45,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:45,816 INFO L93 Difference]: Finished difference Result 9245 states and 15421 transitions. [2022-01-10 23:55:45,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:55:45,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 23:55:45,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:45,832 INFO L225 Difference]: With dead ends: 9245 [2022-01-10 23:55:45,832 INFO L226 Difference]: Without dead ends: 7598 [2022-01-10 23:55:45,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:55:45,837 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 1169 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:55:45,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1169 Valid, 2046 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:55:45,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7598 states. [2022-01-10 23:55:46,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7598 to 6972. [2022-01-10 23:55:46,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6972 states, 6968 states have (on average 1.7045063145809414) internal successors, (11877), 6971 states have internal predecessors, (11877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:46,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6972 states to 6972 states and 11877 transitions. [2022-01-10 23:55:46,288 INFO L78 Accepts]: Start accepts. Automaton has 6972 states and 11877 transitions. Word has length 74 [2022-01-10 23:55:46,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:46,288 INFO L470 AbstractCegarLoop]: Abstraction has 6972 states and 11877 transitions. [2022-01-10 23:55:46,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:46,289 INFO L276 IsEmpty]: Start isEmpty. Operand 6972 states and 11877 transitions. [2022-01-10 23:55:46,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 23:55:46,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:46,298 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:46,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:55:46,299 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:55:46,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:46,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1798277654, now seen corresponding path program 1 times [2022-01-10 23:55:46,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:46,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513215197] [2022-01-10 23:55:46,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:46,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:46,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:46,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:46,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513215197] [2022-01-10 23:55:46,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513215197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:46,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:46,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:55:46,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011317040] [2022-01-10 23:55:46,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:46,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:55:46,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:46,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:55:46,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:55:46,427 INFO L87 Difference]: Start difference. First operand 6972 states and 11877 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:48,367 INFO L93 Difference]: Finished difference Result 21982 states and 35359 transitions. [2022-01-10 23:55:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:55:48,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2022-01-10 23:55:48,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:48,401 INFO L225 Difference]: With dead ends: 21982 [2022-01-10 23:55:48,401 INFO L226 Difference]: Without dead ends: 19908 [2022-01-10 23:55:48,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 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 23:55:48,409 INFO L933 BasicCegarLoop]: 928 mSDtfsCounter, 3139 mSDsluCounter, 2990 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3139 SdHoareTripleChecker+Valid, 3918 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:55:48,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3139 Valid, 3918 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:55:48,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19908 states. [2022-01-10 23:55:49,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19908 to 10903. [2022-01-10 23:55:49,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10903 states, 10899 states have (on average 1.6739150380768877) internal successors, (18244), 10902 states have internal predecessors, (18244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:49,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10903 states to 10903 states and 18244 transitions. [2022-01-10 23:55:49,359 INFO L78 Accepts]: Start accepts. Automaton has 10903 states and 18244 transitions. Word has length 74 [2022-01-10 23:55:49,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:49,359 INFO L470 AbstractCegarLoop]: Abstraction has 10903 states and 18244 transitions. [2022-01-10 23:55:49,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:49,359 INFO L276 IsEmpty]: Start isEmpty. Operand 10903 states and 18244 transitions. [2022-01-10 23:55:49,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 23:55:49,371 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:49,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:49,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:55:49,371 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:55:49,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:49,372 INFO L85 PathProgramCache]: Analyzing trace with hash 843647707, now seen corresponding path program 1 times [2022-01-10 23:55:49,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:49,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258023072] [2022-01-10 23:55:49,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:49,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:49,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:49,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258023072] [2022-01-10 23:55:49,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258023072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:49,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:49,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:55:49,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297337670] [2022-01-10 23:55:49,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:49,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:55:49,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:49,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:55:49,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:55:49,484 INFO L87 Difference]: Start difference. First operand 10903 states and 18244 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:50,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:50,940 INFO L93 Difference]: Finished difference Result 17906 states and 29138 transitions. [2022-01-10 23:55:50,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 23:55:50,941 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-10 23:55:50,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:50,965 INFO L225 Difference]: With dead ends: 17906 [2022-01-10 23:55:50,965 INFO L226 Difference]: Without dead ends: 13009 [2022-01-10 23:55:50,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2022-01-10 23:55:50,974 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 3069 mSDsluCounter, 3785 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3069 SdHoareTripleChecker+Valid, 4782 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:55:50,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3069 Valid, 4782 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:55:50,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13009 states. [2022-01-10 23:55:51,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13009 to 10103. [2022-01-10 23:55:51,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10103 states, 10099 states have (on average 1.667095752054659) internal successors, (16836), 10102 states have internal predecessors, (16836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:51,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10103 states to 10103 states and 16836 transitions. [2022-01-10 23:55:51,833 INFO L78 Accepts]: Start accepts. Automaton has 10103 states and 16836 transitions. Word has length 75 [2022-01-10 23:55:51,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:51,833 INFO L470 AbstractCegarLoop]: Abstraction has 10103 states and 16836 transitions. [2022-01-10 23:55:51,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:51,834 INFO L276 IsEmpty]: Start isEmpty. Operand 10103 states and 16836 transitions. [2022-01-10 23:55:51,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 23:55:51,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:51,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:51,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:55:51,844 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:55:51,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:51,844 INFO L85 PathProgramCache]: Analyzing trace with hash 971809491, now seen corresponding path program 1 times [2022-01-10 23:55:51,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:51,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430444583] [2022-01-10 23:55:51,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:51,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:51,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:51,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430444583] [2022-01-10 23:55:51,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430444583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:51,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:51,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:55:51,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667798509] [2022-01-10 23:55:51,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:51,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:55:51,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:51,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:55:51,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:55:51,926 INFO L87 Difference]: Start difference. First operand 10103 states and 16836 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:55,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:55:55,011 INFO L93 Difference]: Finished difference Result 30569 states and 48422 transitions. [2022-01-10 23:55:55,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:55:55,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 23:55:55,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:55:55,054 INFO L225 Difference]: With dead ends: 30569 [2022-01-10 23:55:55,054 INFO L226 Difference]: Without dead ends: 25928 [2022-01-10 23:55:55,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 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 23:55:55,069 INFO L933 BasicCegarLoop]: 1743 mSDtfsCounter, 2341 mSDsluCounter, 3726 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2341 SdHoareTripleChecker+Valid, 5469 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:55:55,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2341 Valid, 5469 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:55:55,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25928 states. [2022-01-10 23:55:56,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25928 to 13553. [2022-01-10 23:55:56,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13553 states, 13549 states have (on average 1.6379068565945827) internal successors, (22192), 13552 states have internal predecessors, (22192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:56,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13553 states to 13553 states and 22192 transitions. [2022-01-10 23:55:56,436 INFO L78 Accepts]: Start accepts. Automaton has 13553 states and 22192 transitions. Word has length 76 [2022-01-10 23:55:56,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:55:56,437 INFO L470 AbstractCegarLoop]: Abstraction has 13553 states and 22192 transitions. [2022-01-10 23:55:56,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:55:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 13553 states and 22192 transitions. [2022-01-10 23:55:56,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 23:55:56,448 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:55:56,448 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:55:56,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:55:56,448 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:55:56,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:55:56,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1274348897, now seen corresponding path program 1 times [2022-01-10 23:55:56,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:55:56,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883646386] [2022-01-10 23:55:56,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:55:56,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:55:56,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:55:56,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:55:56,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:55:56,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883646386] [2022-01-10 23:55:56,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883646386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:55:56,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:55:56,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:55:56,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022908516] [2022-01-10 23:55:56,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:55:56,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:55:56,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:55:56,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:55:56,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:55:56,560 INFO L87 Difference]: Start difference. First operand 13553 states and 22192 transitions. Second operand has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:02,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:02,468 INFO L93 Difference]: Finished difference Result 50918 states and 80374 transitions. [2022-01-10 23:56:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 23:56:02,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 23:56:02,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:02,530 INFO L225 Difference]: With dead ends: 50918 [2022-01-10 23:56:02,530 INFO L226 Difference]: Without dead ends: 45121 [2022-01-10 23:56:02,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=153, Invalid=309, Unknown=0, NotChecked=0, Total=462 [2022-01-10 23:56:02,547 INFO L933 BasicCegarLoop]: 1011 mSDtfsCounter, 7171 mSDsluCounter, 7094 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7171 SdHoareTripleChecker+Valid, 8105 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:02,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7171 Valid, 8105 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 23:56:02,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45121 states. [2022-01-10 23:56:05,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45121 to 23715. [2022-01-10 23:56:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23715 states, 23711 states have (on average 1.6461557926700687) internal successors, (39032), 23714 states have internal predecessors, (39032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:05,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23715 states to 23715 states and 39032 transitions. [2022-01-10 23:56:05,401 INFO L78 Accepts]: Start accepts. Automaton has 23715 states and 39032 transitions. Word has length 76 [2022-01-10 23:56:05,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:05,401 INFO L470 AbstractCegarLoop]: Abstraction has 23715 states and 39032 transitions. [2022-01-10 23:56:05,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.444444444444445) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:05,401 INFO L276 IsEmpty]: Start isEmpty. Operand 23715 states and 39032 transitions. [2022-01-10 23:56:05,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 23:56:05,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:05,415 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:05,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:56:05,416 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:56:05,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:05,417 INFO L85 PathProgramCache]: Analyzing trace with hash 943409056, now seen corresponding path program 1 times [2022-01-10 23:56:05,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:05,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435659232] [2022-01-10 23:56:05,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:05,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:56:05,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:05,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435659232] [2022-01-10 23:56:05,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435659232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:05,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:05,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:56:05,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569239696] [2022-01-10 23:56:05,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:05,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:56:05,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:05,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:56:05,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:56:05,532 INFO L87 Difference]: Start difference. First operand 23715 states and 39032 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:24,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:56:24,516 INFO L93 Difference]: Finished difference Result 140975 states and 222340 transitions. [2022-01-10 23:56:24,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-10 23:56:24,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2022-01-10 23:56:24,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:56:24,745 INFO L225 Difference]: With dead ends: 140975 [2022-01-10 23:56:24,745 INFO L226 Difference]: Without dead ends: 131756 [2022-01-10 23:56:24,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=538, Unknown=0, NotChecked=0, Total=756 [2022-01-10 23:56:24,788 INFO L933 BasicCegarLoop]: 2384 mSDtfsCounter, 4683 mSDsluCounter, 8978 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4683 SdHoareTripleChecker+Valid, 11362 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:56:24,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4683 Valid, 11362 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:56:24,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131756 states. [2022-01-10 23:56:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131756 to 32058. [2022-01-10 23:56:30,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32058 states, 32054 states have (on average 1.6275971797591564) internal successors, (52171), 32057 states have internal predecessors, (52171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:30,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32058 states to 32058 states and 52171 transitions. [2022-01-10 23:56:30,317 INFO L78 Accepts]: Start accepts. Automaton has 32058 states and 52171 transitions. Word has length 76 [2022-01-10 23:56:30,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:56:30,318 INFO L470 AbstractCegarLoop]: Abstraction has 32058 states and 52171 transitions. [2022-01-10 23:56:30,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:56:30,318 INFO L276 IsEmpty]: Start isEmpty. Operand 32058 states and 52171 transitions. [2022-01-10 23:56:30,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 23:56:30,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:56:30,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:56:30,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:56:30,337 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2022-01-10 23:56:30,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:56:30,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1522720343, now seen corresponding path program 1 times [2022-01-10 23:56:30,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:56:30,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567498539] [2022-01-10 23:56:30,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:56:30,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:56:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:56:30,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:56:30,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:56:30,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567498539] [2022-01-10 23:56:30,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567498539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:56:30,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:56:30,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:56:30,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191390070] [2022-01-10 23:56:30,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:56:30,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:56:30,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:56:30,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:56:30,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:56:30,414 INFO L87 Difference]: Start difference. First operand 32058 states and 52171 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)