/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_spec7_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:59:14,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:59:14,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:59:14,924 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:59:14,925 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:59:14,926 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:59:14,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:59:14,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:59:14,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:59:14,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:59:14,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:59:14,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:59:14,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:59:14,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:59:14,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:59:14,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:59:14,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:59:14,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:59:14,952 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:59:14,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:59:14,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:59:14,960 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:59:14,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:59:14,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:59:14,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:59:14,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:59:14,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:59:14,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:59:14,971 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:59:14,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:59:14,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:59:14,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:59:14,974 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:59:14,975 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:59:14,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:59:14,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:59:14,977 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:59:14,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:59:14,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:59:14,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:59:14,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:59:14,979 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 23:59:14,999 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:59:14,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:59:14,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:59:14,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:59:15,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:59:15,000 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:59:15,000 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:59:15,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:59:15,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:59:15,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:59:15,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:59:15,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:59:15,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:59:15,001 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:59:15,001 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:59:15,002 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:59:15,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:59:15,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:59:15,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:59:15,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:59:15,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:59:15,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:59:15,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:59:15,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:59:15,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:59:15,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:59:15,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:59:15,003 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:59:15,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:59:15,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:59:15,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:59:15,004 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:59:15,004 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:59:15,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:59:15,223 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:59:15,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:59:15,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:59:15,258 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:59:15,259 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:59:15,260 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec7_product28.cil.c [2022-01-10 23:59:15,321 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc0dac34/c1ba9c7a6073462b968445b89b52fdd7/FLAG114733684 [2022-01-10 23:59:15,765 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:59:15,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec7_product28.cil.c [2022-01-10 23:59:15,790 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc0dac34/c1ba9c7a6073462b968445b89b52fdd7/FLAG114733684 [2022-01-10 23:59:15,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfc0dac34/c1ba9c7a6073462b968445b89b52fdd7 [2022-01-10 23:59:15,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:59:15,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:59:15,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:59:15,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:59:15,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:59:15,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:59:15" (1/1) ... [2022-01-10 23:59:15,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249552ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:15, skipping insertion in model container [2022-01-10 23:59:15,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:59:15" (1/1) ... [2022-01-10 23:59:15,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:59:15,903 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:59:16,058 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_spec7_product28.cil.c[1542,1555] [2022-01-10 23:59:16,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:59:16,342 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:59:16,357 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:59:16,359 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_spec7_product28.cil.c[1542,1555] [2022-01-10 23:59:16,475 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:59:16,490 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:59:16,501 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_spec7_product28.cil.c[1542,1555] [2022-01-10 23:59:16,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:59:16,628 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:59:16,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:16 WrapperNode [2022-01-10 23:59:16,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:59:16,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:59:16,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:59:16,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:59:16,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:16" (1/1) ... [2022-01-10 23:59:16,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:16" (1/1) ... [2022-01-10 23:59:16,758 INFO L137 Inliner]: procedures = 130, calls = 205, calls flagged for inlining = 120, calls inlined = 147, statements flattened = 2211 [2022-01-10 23:59:16,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:59:16,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:59:16,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:59:16,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:59:16,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:16" (1/1) ... [2022-01-10 23:59:16,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:16" (1/1) ... [2022-01-10 23:59:16,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:16" (1/1) ... [2022-01-10 23:59:16,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:16" (1/1) ... [2022-01-10 23:59:16,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:16" (1/1) ... [2022-01-10 23:59:16,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:16" (1/1) ... [2022-01-10 23:59:16,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:16" (1/1) ... [2022-01-10 23:59:16,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:59:16,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:59:16,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:59:16,830 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:59:16,844 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:16" (1/1) ... [2022-01-10 23:59:16,862 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:59:16,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:59:16,905 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 23:59:16,927 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 23:59:16,952 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 23:59:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:59:16,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:59:16,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:59:16,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:59:17,177 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:59:17,179 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:59:18,469 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:59:18,478 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:59:18,478 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:59:18,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:59:18 BoogieIcfgContainer [2022-01-10 23:59:18,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:59:18,481 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:59:18,481 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:59:18,482 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:59:18,485 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:59:18" (1/1) ... [2022-01-10 23:59:18,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:59:18 BasicIcfg [2022-01-10 23:59:18,782 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:59:18,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:59:18,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:59:18,787 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:59:18,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:59:15" (1/4) ... [2022-01-10 23:59:18,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8fc7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:59:18, skipping insertion in model container [2022-01-10 23:59:18,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:59:16" (2/4) ... [2022-01-10 23:59:18,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8fc7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:59:18, skipping insertion in model container [2022-01-10 23:59:18,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:59:18" (3/4) ... [2022-01-10 23:59:18,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e8fc7dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:59:18, skipping insertion in model container [2022-01-10 23:59:18,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:59:18" (4/4) ... [2022-01-10 23:59:18,790 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec7_product28.cil.cTransformedIcfg [2022-01-10 23:59:18,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:59:18,794 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 23:59:18,847 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:59:18,857 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 23:59:18,857 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 23:59:18,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 517 states, 514 states have (on average 1.6945525291828794) internal successors, (871), 516 states have internal predecessors, (871), 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 23:59:18,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 23:59:18,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:18,901 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] [2022-01-10 23:59:18,902 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:18,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:18,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1172325908, now seen corresponding path program 1 times [2022-01-10 23:59:18,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:18,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71173662] [2022-01-10 23:59:18,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:18,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:19,333 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 23:59:19,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:19,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71173662] [2022-01-10 23:59:19,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71173662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:19,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:19,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:59:19,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698865952] [2022-01-10 23:59:19,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:19,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:59:19,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:19,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:59:19,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:59:19,374 INFO L87 Difference]: Start difference. First operand has 517 states, 514 states have (on average 1.6945525291828794) internal successors, (871), 516 states have internal predecessors, (871), 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 29.5) internal successors, (59), 2 states have internal predecessors, (59), 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 23:59:19,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:19,440 INFO L93 Difference]: Finished difference Result 778 states and 1290 transitions. [2022-01-10 23:59:19,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:59:19,442 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 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 59 [2022-01-10 23:59:19,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:19,460 INFO L225 Difference]: With dead ends: 778 [2022-01-10 23:59:19,460 INFO L226 Difference]: Without dead ends: 463 [2022-01-10 23:59:19,466 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 23:59:19,469 INFO L933 BasicCegarLoop]: 865 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, 865 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 23:59:19,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:19,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-01-10 23:59:19,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2022-01-10 23:59:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.702819956616052) internal successors, (785), 462 states have internal predecessors, (785), 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 23:59:19,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 785 transitions. [2022-01-10 23:59:19,535 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 785 transitions. Word has length 59 [2022-01-10 23:59:19,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:19,535 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 785 transitions. [2022-01-10 23:59:19,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.5) internal successors, (59), 2 states have internal predecessors, (59), 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 23:59:19,536 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 785 transitions. [2022-01-10 23:59:19,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 23:59:19,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:19,538 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] [2022-01-10 23:59:19,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:59:19,539 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:19,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:19,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1320092312, now seen corresponding path program 1 times [2022-01-10 23:59:19,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:19,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063893449] [2022-01-10 23:59:19,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:19,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:19,757 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 23:59:19,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:19,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063893449] [2022-01-10 23:59:19,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063893449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:19,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:19,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:59:19,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141041272] [2022-01-10 23:59:19,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:19,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:59:19,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:19,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:59:19,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:19,760 INFO L87 Difference]: Start difference. First operand 463 states and 785 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 23:59:19,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:19,840 INFO L93 Difference]: Finished difference Result 907 states and 1542 transitions. [2022-01-10 23:59:19,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:59:19,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 60 [2022-01-10 23:59:19,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:19,845 INFO L225 Difference]: With dead ends: 907 [2022-01-10 23:59:19,845 INFO L226 Difference]: Without dead ends: 463 [2022-01-10 23:59:19,848 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 23:59:19,849 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 760 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:19,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [760 Valid, 780 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:19,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-01-10 23:59:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2022-01-10 23:59:19,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.6984815618221258) internal successors, (783), 462 states have internal predecessors, (783), 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 23:59:19,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 783 transitions. [2022-01-10 23:59:19,889 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 783 transitions. Word has length 60 [2022-01-10 23:59:19,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:19,890 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 783 transitions. [2022-01-10 23:59:19,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 23:59:19,892 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 783 transitions. [2022-01-10 23:59:19,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-01-10 23:59:19,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:19,901 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] [2022-01-10 23:59:19,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:59:19,901 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:19,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:19,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2061744936, now seen corresponding path program 1 times [2022-01-10 23:59:19,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:19,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712377921] [2022-01-10 23:59:19,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:19,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:20,053 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 23:59:20,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:20,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712377921] [2022-01-10 23:59:20,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712377921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:20,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:20,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:20,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660936139] [2022-01-10 23:59:20,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:20,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:20,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:20,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:20,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:20,056 INFO L87 Difference]: Start difference. First operand 463 states and 783 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 23:59:20,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:20,293 INFO L93 Difference]: Finished difference Result 2183 states and 3711 transitions. [2022-01-10 23:59:20,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:59:20,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 62 [2022-01-10 23:59:20,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:20,303 INFO L225 Difference]: With dead ends: 2183 [2022-01-10 23:59:20,303 INFO L226 Difference]: Without dead ends: 1744 [2022-01-10 23:59:20,307 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 23:59:20,310 INFO L933 BasicCegarLoop]: 1489 mSDtfsCounter, 3698 mSDsluCounter, 2221 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3698 SdHoareTripleChecker+Valid, 3710 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 23:59:20,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3698 Valid, 3710 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:20,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2022-01-10 23:59:20,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 463. [2022-01-10 23:59:20,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.6963123644251628) internal successors, (782), 462 states have internal predecessors, (782), 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 23:59:20,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 782 transitions. [2022-01-10 23:59:20,346 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 782 transitions. Word has length 62 [2022-01-10 23:59:20,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:20,347 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 782 transitions. [2022-01-10 23:59:20,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 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 23:59:20,347 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 782 transitions. [2022-01-10 23:59:20,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:59:20,348 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:20,348 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] [2022-01-10 23:59:20,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:59:20,348 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:20,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:20,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1945239442, now seen corresponding path program 1 times [2022-01-10 23:59:20,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:20,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598171644] [2022-01-10 23:59:20,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:20,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:20,476 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 23:59:20,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:20,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598171644] [2022-01-10 23:59:20,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598171644] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:20,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:20,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:59:20,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533753608] [2022-01-10 23:59:20,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:20,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:59:20,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:20,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:59:20,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:59:20,480 INFO L87 Difference]: Start difference. First operand 463 states and 782 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 23:59:20,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:20,538 INFO L93 Difference]: Finished difference Result 911 states and 1542 transitions. [2022-01-10 23:59:20,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:59:20,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2022-01-10 23:59:20,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:20,542 INFO L225 Difference]: With dead ends: 911 [2022-01-10 23:59:20,542 INFO L226 Difference]: Without dead ends: 477 [2022-01-10 23:59:20,543 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 23:59:20,550 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 761 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 818 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 23:59:20,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [761 Valid, 818 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:20,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-10 23:59:20,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 463. [2022-01-10 23:59:20,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.6941431670281997) internal successors, (781), 462 states have internal predecessors, (781), 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 23:59:20,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 781 transitions. [2022-01-10 23:59:20,579 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 781 transitions. Word has length 63 [2022-01-10 23:59:20,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:20,579 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 781 transitions. [2022-01-10 23:59:20,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 23:59:20,579 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 781 transitions. [2022-01-10 23:59:20,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 23:59:20,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:20,581 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 23:59:20,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:59:20,582 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:20,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:20,584 INFO L85 PathProgramCache]: Analyzing trace with hash -706093993, now seen corresponding path program 1 times [2022-01-10 23:59:20,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:20,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357943359] [2022-01-10 23:59:20,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:20,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:20,721 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 23:59:20,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:20,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357943359] [2022-01-10 23:59:20,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357943359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:20,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:20,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:20,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335492217] [2022-01-10 23:59:20,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:20,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:20,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:20,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:20,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:20,724 INFO L87 Difference]: Start difference. First operand 463 states and 781 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 23:59:20,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:20,881 INFO L93 Difference]: Finished difference Result 1323 states and 2243 transitions. [2022-01-10 23:59:20,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:59:20,881 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 23:59:20,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:20,885 INFO L225 Difference]: With dead ends: 1323 [2022-01-10 23:59:20,885 INFO L226 Difference]: Without dead ends: 894 [2022-01-10 23:59:20,886 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 23:59:20,887 INFO L933 BasicCegarLoop]: 790 mSDtfsCounter, 3621 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3621 SdHoareTripleChecker+Valid, 1594 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 23:59:20,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3621 Valid, 1594 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:20,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2022-01-10 23:59:20,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 463. [2022-01-10 23:59:20,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 461 states have (on average 1.6898047722342733) internal successors, (779), 462 states have internal predecessors, (779), 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 23:59:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 779 transitions. [2022-01-10 23:59:20,928 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 779 transitions. Word has length 64 [2022-01-10 23:59:20,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:20,928 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 779 transitions. [2022-01-10 23:59:20,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 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 23:59:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 779 transitions. [2022-01-10 23:59:20,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 23:59:20,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:20,929 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] [2022-01-10 23:59:20,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:59:20,930 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:20,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:20,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1250047590, now seen corresponding path program 1 times [2022-01-10 23:59:20,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:20,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854373191] [2022-01-10 23:59:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:20,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:21,066 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 23:59:21,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:21,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854373191] [2022-01-10 23:59:21,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854373191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:21,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:21,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:21,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952606457] [2022-01-10 23:59:21,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:21,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:21,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:21,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:21,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:21,069 INFO L87 Difference]: Start difference. First operand 463 states and 779 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 23:59:21,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:21,550 INFO L93 Difference]: Finished difference Result 2746 states and 4545 transitions. [2022-01-10 23:59:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:59:21,551 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 66 [2022-01-10 23:59:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:21,561 INFO L225 Difference]: With dead ends: 2746 [2022-01-10 23:59:21,561 INFO L226 Difference]: Without dead ends: 2556 [2022-01-10 23:59:21,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:59:21,563 INFO L933 BasicCegarLoop]: 1147 mSDtfsCounter, 4747 mSDsluCounter, 4465 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4747 SdHoareTripleChecker+Valid, 5612 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:21,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4747 Valid, 5612 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:59:21,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2022-01-10 23:59:21,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 840. [2022-01-10 23:59:21,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 838 states have (on average 1.6933174224343674) internal successors, (1419), 839 states have internal predecessors, (1419), 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 23:59:21,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1419 transitions. [2022-01-10 23:59:21,640 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1419 transitions. Word has length 66 [2022-01-10 23:59:21,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:21,640 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1419 transitions. [2022-01-10 23:59:21,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 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 23:59:21,641 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1419 transitions. [2022-01-10 23:59:21,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:59:21,642 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:21,642 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 23:59:21,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:59:21,643 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:21,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:21,643 INFO L85 PathProgramCache]: Analyzing trace with hash -574165154, now seen corresponding path program 1 times [2022-01-10 23:59:21,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:21,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919726344] [2022-01-10 23:59:21,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:21,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:21,756 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 23:59:21,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:21,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919726344] [2022-01-10 23:59:21,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919726344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:21,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:21,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:21,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617948552] [2022-01-10 23:59:21,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:21,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:21,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:21,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:21,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:21,758 INFO L87 Difference]: Start difference. First operand 840 states and 1419 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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 23:59:22,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:22,322 INFO L93 Difference]: Finished difference Result 4824 states and 8027 transitions. [2022-01-10 23:59:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:59:22,323 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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 23:59:22,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:22,340 INFO L225 Difference]: With dead ends: 4824 [2022-01-10 23:59:22,340 INFO L226 Difference]: Without dead ends: 4518 [2022-01-10 23:59:22,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:59:22,342 INFO L933 BasicCegarLoop]: 1398 mSDtfsCounter, 4095 mSDsluCounter, 3953 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4095 SdHoareTripleChecker+Valid, 5351 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 23:59:22,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4095 Valid, 5351 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:22,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4518 states. [2022-01-10 23:59:22,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4518 to 1571. [2022-01-10 23:59:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1569 states have (on average 1.7010834926704907) internal successors, (2669), 1570 states have internal predecessors, (2669), 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 23:59:22,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2669 transitions. [2022-01-10 23:59:22,472 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2669 transitions. Word has length 67 [2022-01-10 23:59:22,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:22,472 INFO L470 AbstractCegarLoop]: Abstraction has 1571 states and 2669 transitions. [2022-01-10 23:59:22,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 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 23:59:22,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2669 transitions. [2022-01-10 23:59:22,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:59:22,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:22,475 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 23:59:22,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:59:22,475 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:22,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:22,476 INFO L85 PathProgramCache]: Analyzing trace with hash 624498804, now seen corresponding path program 1 times [2022-01-10 23:59:22,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:22,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530710772] [2022-01-10 23:59:22,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:22,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:22,552 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 23:59:22,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:22,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530710772] [2022-01-10 23:59:22,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530710772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:22,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:22,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:22,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018825401] [2022-01-10 23:59:22,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:22,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:22,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:22,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:22,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:22,555 INFO L87 Difference]: Start difference. First operand 1571 states and 2669 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 23:59:22,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:22,855 INFO L93 Difference]: Finished difference Result 4525 states and 7747 transitions. [2022-01-10 23:59:22,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:59:22,855 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 23:59:22,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:22,868 INFO L225 Difference]: With dead ends: 4525 [2022-01-10 23:59:22,868 INFO L226 Difference]: Without dead ends: 3004 [2022-01-10 23:59:22,873 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 23:59:22,873 INFO L933 BasicCegarLoop]: 1461 mSDtfsCounter, 2274 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2274 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:22,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2274 Valid, 2193 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:22,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3004 states. [2022-01-10 23:59:23,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3004 to 1571. [2022-01-10 23:59:23,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1569 states have (on average 1.6998087954110899) internal successors, (2667), 1570 states have internal predecessors, (2667), 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 23:59:23,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2667 transitions. [2022-01-10 23:59:23,019 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2667 transitions. Word has length 67 [2022-01-10 23:59:23,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:23,019 INFO L470 AbstractCegarLoop]: Abstraction has 1571 states and 2667 transitions. [2022-01-10 23:59:23,020 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 23:59:23,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2667 transitions. [2022-01-10 23:59:23,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:59:23,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:23,026 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 23:59:23,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:59:23,027 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:23,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:23,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1404276266, now seen corresponding path program 1 times [2022-01-10 23:59:23,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:23,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378104995] [2022-01-10 23:59:23,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:23,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:23,154 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 23:59:23,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:23,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378104995] [2022-01-10 23:59:23,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378104995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:23,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:23,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:23,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884428529] [2022-01-10 23:59:23,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:23,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:23,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:23,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:23,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:23,156 INFO L87 Difference]: Start difference. First operand 1571 states and 2667 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 23:59:24,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:24,084 INFO L93 Difference]: Finished difference Result 8925 states and 14931 transitions. [2022-01-10 23:59:24,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:59:24,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 23:59:24,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:24,116 INFO L225 Difference]: With dead ends: 8925 [2022-01-10 23:59:24,116 INFO L226 Difference]: Without dead ends: 8390 [2022-01-10 23:59:24,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:59:24,120 INFO L933 BasicCegarLoop]: 1404 mSDtfsCounter, 4033 mSDsluCounter, 3991 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4033 SdHoareTripleChecker+Valid, 5395 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 23:59:24,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4033 Valid, 5395 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:24,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8390 states. [2022-01-10 23:59:24,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8390 to 2994. [2022-01-10 23:59:24,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2994 states, 2992 states have (on average 1.7115641711229947) internal successors, (5121), 2993 states have internal predecessors, (5121), 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 23:59:24,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2994 states to 2994 states and 5121 transitions. [2022-01-10 23:59:24,420 INFO L78 Accepts]: Start accepts. Automaton has 2994 states and 5121 transitions. Word has length 68 [2022-01-10 23:59:24,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:24,420 INFO L470 AbstractCegarLoop]: Abstraction has 2994 states and 5121 transitions. [2022-01-10 23:59:24,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 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 23:59:24,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2994 states and 5121 transitions. [2022-01-10 23:59:24,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:59:24,425 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:24,425 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 23:59:24,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:59:24,425 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:24,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:24,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1929077013, now seen corresponding path program 1 times [2022-01-10 23:59:24,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:24,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899623733] [2022-01-10 23:59:24,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:24,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:24,572 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 23:59:24,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:24,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899623733] [2022-01-10 23:59:24,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899623733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:24,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:24,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:24,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376424161] [2022-01-10 23:59:24,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:24,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:59:24,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:24,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:59:24,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:59:24,574 INFO L87 Difference]: Start difference. First operand 2994 states and 5121 transitions. Second operand has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 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 23:59:25,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:25,760 INFO L93 Difference]: Finished difference Result 9960 states and 16523 transitions. [2022-01-10 23:59:25,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 23:59:25,761 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 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 23:59:25,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:25,793 INFO L225 Difference]: With dead ends: 9960 [2022-01-10 23:59:25,793 INFO L226 Difference]: Without dead ends: 9070 [2022-01-10 23:59:25,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-10 23:59:25,797 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 5606 mSDsluCounter, 5484 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5606 SdHoareTripleChecker+Valid, 6441 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:25,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5606 Valid, 6441 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:59:25,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9070 states. [2022-01-10 23:59:26,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9070 to 5845. [2022-01-10 23:59:26,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5845 states, 5843 states have (on average 1.7184665411603628) internal successors, (10041), 5844 states have internal predecessors, (10041), 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 23:59:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5845 states to 5845 states and 10041 transitions. [2022-01-10 23:59:26,363 INFO L78 Accepts]: Start accepts. Automaton has 5845 states and 10041 transitions. Word has length 68 [2022-01-10 23:59:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:26,365 INFO L470 AbstractCegarLoop]: Abstraction has 5845 states and 10041 transitions. [2022-01-10 23:59:26,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.555555555555555) internal successors, (68), 8 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 23:59:26,365 INFO L276 IsEmpty]: Start isEmpty. Operand 5845 states and 10041 transitions. [2022-01-10 23:59:26,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:59:26,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:26,375 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 23:59:26,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:59:26,376 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:26,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:26,377 INFO L85 PathProgramCache]: Analyzing trace with hash -936230083, now seen corresponding path program 1 times [2022-01-10 23:59:26,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:26,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740960621] [2022-01-10 23:59:26,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:26,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:26,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:26,545 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 23:59:26,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:26,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740960621] [2022-01-10 23:59:26,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740960621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:26,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:26,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:26,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887644806] [2022-01-10 23:59:26,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:26,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 23:59:26,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:26,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 23:59:26,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:59:26,547 INFO L87 Difference]: Start difference. First operand 5845 states and 10041 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 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 23:59:28,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:28,159 INFO L93 Difference]: Finished difference Result 18400 states and 30628 transitions. [2022-01-10 23:59:28,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 23:59:28,160 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 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 23:59:28,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:28,196 INFO L225 Difference]: With dead ends: 18400 [2022-01-10 23:59:28,197 INFO L226 Difference]: Without dead ends: 16681 [2022-01-10 23:59:28,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-10 23:59:28,205 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 5595 mSDsluCounter, 4774 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5595 SdHoareTripleChecker+Valid, 5591 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:28,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5595 Valid, 5591 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:59:28,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16681 states. [2022-01-10 23:59:29,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16681 to 11564. [2022-01-10 23:59:29,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11564 states, 11562 states have (on average 1.7217609410136654) internal successors, (19907), 11563 states have internal predecessors, (19907), 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 23:59:29,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11564 states to 11564 states and 19907 transitions. [2022-01-10 23:59:29,167 INFO L78 Accepts]: Start accepts. Automaton has 11564 states and 19907 transitions. Word has length 69 [2022-01-10 23:59:29,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:29,167 INFO L470 AbstractCegarLoop]: Abstraction has 11564 states and 19907 transitions. [2022-01-10 23:59:29,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 8 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 23:59:29,167 INFO L276 IsEmpty]: Start isEmpty. Operand 11564 states and 19907 transitions. [2022-01-10 23:59:29,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:59:29,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:29,184 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 23:59:29,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:59:29,184 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:29,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:29,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1345054308, now seen corresponding path program 1 times [2022-01-10 23:59:29,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:29,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182961733] [2022-01-10 23:59:29,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:29,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:29,322 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 23:59:29,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:29,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182961733] [2022-01-10 23:59:29,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182961733] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:29,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:29,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:29,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326163140] [2022-01-10 23:59:29,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:29,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:29,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:29,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:29,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:29,325 INFO L87 Difference]: Start difference. First operand 11564 states and 19907 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 23:59:31,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:31,714 INFO L93 Difference]: Finished difference Result 28370 states and 48181 transitions. [2022-01-10 23:59:31,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:59:31,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 23:59:31,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:31,775 INFO L225 Difference]: With dead ends: 28370 [2022-01-10 23:59:31,776 INFO L226 Difference]: Without dead ends: 27264 [2022-01-10 23:59:31,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:59:31,787 INFO L933 BasicCegarLoop]: 1311 mSDtfsCounter, 3928 mSDsluCounter, 4654 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3928 SdHoareTripleChecker+Valid, 5965 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:31,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3928 Valid, 5965 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:31,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27264 states. [2022-01-10 23:59:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27264 to 11711. [2022-01-10 23:59:32,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11711 states, 11709 states have (on average 1.7191049619950465) internal successors, (20129), 11710 states have internal predecessors, (20129), 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 23:59:32,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11711 states to 11711 states and 20129 transitions. [2022-01-10 23:59:32,848 INFO L78 Accepts]: Start accepts. Automaton has 11711 states and 20129 transitions. Word has length 69 [2022-01-10 23:59:32,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:32,849 INFO L470 AbstractCegarLoop]: Abstraction has 11711 states and 20129 transitions. [2022-01-10 23:59:32,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 23:59:32,849 INFO L276 IsEmpty]: Start isEmpty. Operand 11711 states and 20129 transitions. [2022-01-10 23:59:32,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:59:32,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:32,862 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 23:59:32,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:59:32,863 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:32,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:32,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1073336823, now seen corresponding path program 1 times [2022-01-10 23:59:32,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:32,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136623860] [2022-01-10 23:59:32,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:32,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:33,052 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 23:59:33,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:33,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136623860] [2022-01-10 23:59:33,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136623860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:33,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:33,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:33,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591552] [2022-01-10 23:59:33,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:33,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:59:33,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:33,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:59:33,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:59:33,054 INFO L87 Difference]: Start difference. First operand 11711 states and 20129 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 23:59:34,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:34,841 INFO L93 Difference]: Finished difference Result 19296 states and 32174 transitions. [2022-01-10 23:59:34,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 23:59:34,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 23:59:34,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:34,872 INFO L225 Difference]: With dead ends: 19296 [2022-01-10 23:59:34,872 INFO L226 Difference]: Without dead ends: 16507 [2022-01-10 23:59:34,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:59:34,881 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 2819 mSDsluCounter, 3609 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2819 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:34,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2819 Valid, 4608 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:59:34,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16507 states. [2022-01-10 23:59:35,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16507 to 12907. [2022-01-10 23:59:35,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12907 states, 12905 states have (on average 1.70592793490895) internal successors, (22015), 12906 states have internal predecessors, (22015), 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 23:59:35,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12907 states to 12907 states and 22015 transitions. [2022-01-10 23:59:35,904 INFO L78 Accepts]: Start accepts. Automaton has 12907 states and 22015 transitions. Word has length 69 [2022-01-10 23:59:35,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:35,904 INFO L470 AbstractCegarLoop]: Abstraction has 12907 states and 22015 transitions. [2022-01-10 23:59:35,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 8 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 23:59:35,904 INFO L276 IsEmpty]: Start isEmpty. Operand 12907 states and 22015 transitions. [2022-01-10 23:59:35,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:59:35,916 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:35,916 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 23:59:35,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:59:35,917 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:35,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:35,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1218193357, now seen corresponding path program 1 times [2022-01-10 23:59:35,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:35,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897498341] [2022-01-10 23:59:35,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:35,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:35,985 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 23:59:35,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:35,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897498341] [2022-01-10 23:59:35,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897498341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:35,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:35,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:59:35,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469070273] [2022-01-10 23:59:35,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:35,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:59:35,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:35,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:59:35,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:59:35,987 INFO L87 Difference]: Start difference. First operand 12907 states and 22015 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 23:59:36,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:36,982 INFO L93 Difference]: Finished difference Result 14078 states and 23896 transitions. [2022-01-10 23:59:36,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:59:36,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 23:59:36,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:37,073 INFO L225 Difference]: With dead ends: 14078 [2022-01-10 23:59:37,074 INFO L226 Difference]: Without dead ends: 12907 [2022-01-10 23:59:37,079 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 23:59:37,080 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 665 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 665 SdHoareTripleChecker+Valid, 1654 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:37,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [665 Valid, 1654 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:37,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12907 states. [2022-01-10 23:59:38,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12907 to 12907. [2022-01-10 23:59:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12907 states, 12905 states have (on average 1.7053080201472297) internal successors, (22007), 12906 states have internal predecessors, (22007), 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 23:59:38,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12907 states to 12907 states and 22007 transitions. [2022-01-10 23:59:38,067 INFO L78 Accepts]: Start accepts. Automaton has 12907 states and 22007 transitions. Word has length 69 [2022-01-10 23:59:38,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:38,067 INFO L470 AbstractCegarLoop]: Abstraction has 12907 states and 22007 transitions. [2022-01-10 23:59:38,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 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 23:59:38,068 INFO L276 IsEmpty]: Start isEmpty. Operand 12907 states and 22007 transitions. [2022-01-10 23:59:38,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 23:59:38,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:38,080 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 23:59:38,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:59:38,080 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:38,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:38,080 INFO L85 PathProgramCache]: Analyzing trace with hash 1229509484, now seen corresponding path program 1 times [2022-01-10 23:59:38,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:38,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011445382] [2022-01-10 23:59:38,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:38,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:38,178 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 23:59:38,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:38,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011445382] [2022-01-10 23:59:38,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011445382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:38,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:38,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:59:38,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420762450] [2022-01-10 23:59:38,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:38,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:38,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:38,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:38,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:38,180 INFO L87 Difference]: Start difference. First operand 12907 states and 22007 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 23:59:40,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:40,310 INFO L93 Difference]: Finished difference Result 21211 states and 35185 transitions. [2022-01-10 23:59:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:59:40,311 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 23:59:40,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:40,337 INFO L225 Difference]: With dead ends: 21211 [2022-01-10 23:59:40,337 INFO L226 Difference]: Without dead ends: 17656 [2022-01-10 23:59:40,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 23:59:40,349 INFO L933 BasicCegarLoop]: 1237 mSDtfsCounter, 1666 mSDsluCounter, 2635 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1666 SdHoareTripleChecker+Valid, 3872 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:40,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1666 Valid, 3872 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:40,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17656 states. [2022-01-10 23:59:41,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17656 to 13071. [2022-01-10 23:59:41,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13071 states, 13069 states have (on average 1.6964572652842604) internal successors, (22171), 13070 states have internal predecessors, (22171), 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 23:59:41,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13071 states to 13071 states and 22171 transitions. [2022-01-10 23:59:41,536 INFO L78 Accepts]: Start accepts. Automaton has 13071 states and 22171 transitions. Word has length 69 [2022-01-10 23:59:41,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:41,536 INFO L470 AbstractCegarLoop]: Abstraction has 13071 states and 22171 transitions. [2022-01-10 23:59:41,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 4 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 23:59:41,536 INFO L276 IsEmpty]: Start isEmpty. Operand 13071 states and 22171 transitions. [2022-01-10 23:59:41,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:59:41,548 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:41,548 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] [2022-01-10 23:59:41,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:59:41,548 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:41,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:41,549 INFO L85 PathProgramCache]: Analyzing trace with hash -342357696, now seen corresponding path program 1 times [2022-01-10 23:59:41,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:41,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965394328] [2022-01-10 23:59:41,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:41,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:41,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:41,644 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 23:59:41,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:41,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965394328] [2022-01-10 23:59:41,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965394328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:41,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:41,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:59:41,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361697591] [2022-01-10 23:59:41,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:41,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:59:41,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:41,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:59:41,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:59:41,648 INFO L87 Difference]: Start difference. First operand 13071 states and 22171 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 23:59:44,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:44,790 INFO L93 Difference]: Finished difference Result 34187 states and 57159 transitions. [2022-01-10 23:59:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:59:44,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 70 [2022-01-10 23:59:44,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:44,852 INFO L225 Difference]: With dead ends: 34187 [2022-01-10 23:59:44,852 INFO L226 Difference]: Without dead ends: 32648 [2022-01-10 23:59:44,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:59:44,861 INFO L933 BasicCegarLoop]: 1270 mSDtfsCounter, 3883 mSDsluCounter, 3789 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3883 SdHoareTripleChecker+Valid, 5059 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:44,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3883 Valid, 5059 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:44,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32648 states. [2022-01-10 23:59:46,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32648 to 13372. [2022-01-10 23:59:46,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13372 states, 13370 states have (on average 1.694016454749439) internal successors, (22649), 13371 states have internal predecessors, (22649), 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 23:59:46,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13372 states to 13372 states and 22649 transitions. [2022-01-10 23:59:46,270 INFO L78 Accepts]: Start accepts. Automaton has 13372 states and 22649 transitions. Word has length 70 [2022-01-10 23:59:46,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:46,271 INFO L470 AbstractCegarLoop]: Abstraction has 13372 states and 22649 transitions. [2022-01-10 23:59:46,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 23:59:46,271 INFO L276 IsEmpty]: Start isEmpty. Operand 13372 states and 22649 transitions. [2022-01-10 23:59:46,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:59:46,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:46,282 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] [2022-01-10 23:59:46,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:59:46,282 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:46,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:46,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1882720186, now seen corresponding path program 1 times [2022-01-10 23:59:46,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:46,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109998315] [2022-01-10 23:59:46,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:46,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:46,356 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 23:59:46,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:46,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109998315] [2022-01-10 23:59:46,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109998315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:46,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:46,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:46,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453462383] [2022-01-10 23:59:46,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:46,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:46,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:46,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:46,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:46,357 INFO L87 Difference]: Start difference. First operand 13372 states and 22649 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 23:59:48,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:48,754 INFO L93 Difference]: Finished difference Result 39600 states and 67107 transitions. [2022-01-10 23:59:48,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:59:48,754 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 70 [2022-01-10 23:59:48,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:48,800 INFO L225 Difference]: With dead ends: 39600 [2022-01-10 23:59:48,800 INFO L226 Difference]: Without dead ends: 26294 [2022-01-10 23:59:48,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:59:48,815 INFO L933 BasicCegarLoop]: 1464 mSDtfsCounter, 2256 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2256 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:48,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2256 Valid, 2222 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:48,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26294 states. [2022-01-10 23:59:50,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26294 to 13372. [2022-01-10 23:59:50,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13372 states, 13370 states have (on average 1.693866866118175) internal successors, (22647), 13371 states have internal predecessors, (22647), 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 23:59:50,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13372 states to 13372 states and 22647 transitions. [2022-01-10 23:59:50,149 INFO L78 Accepts]: Start accepts. Automaton has 13372 states and 22647 transitions. Word has length 70 [2022-01-10 23:59:50,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:50,149 INFO L470 AbstractCegarLoop]: Abstraction has 13372 states and 22647 transitions. [2022-01-10 23:59:50,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 23:59:50,150 INFO L276 IsEmpty]: Start isEmpty. Operand 13372 states and 22647 transitions. [2022-01-10 23:59:50,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:59:50,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:50,160 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] [2022-01-10 23:59:50,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:59:50,160 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:50,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:50,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1643077095, now seen corresponding path program 1 times [2022-01-10 23:59:50,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:50,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546898897] [2022-01-10 23:59:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:50,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:50,241 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 23:59:50,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:50,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546898897] [2022-01-10 23:59:50,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546898897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:50,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:50,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:59:50,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852039404] [2022-01-10 23:59:50,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:50,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:50,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:50,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:50,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:50,243 INFO L87 Difference]: Start difference. First operand 13372 states and 22647 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 23:59:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:52,119 INFO L93 Difference]: Finished difference Result 22882 states and 37600 transitions. [2022-01-10 23:59:52,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:59:52,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 70 [2022-01-10 23:59:52,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:52,145 INFO L225 Difference]: With dead ends: 22882 [2022-01-10 23:59:52,145 INFO L226 Difference]: Without dead ends: 16950 [2022-01-10 23:59:52,153 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 23:59:52,153 INFO L933 BasicCegarLoop]: 792 mSDtfsCounter, 1781 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 1897 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:52,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1781 Valid, 1897 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:52,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16950 states. [2022-01-10 23:59:53,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16950 to 13342. [2022-01-10 23:59:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13342 states, 13340 states have (on average 1.6894302848575713) internal successors, (22537), 13341 states have internal predecessors, (22537), 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 23:59:53,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13342 states to 13342 states and 22537 transitions. [2022-01-10 23:59:53,432 INFO L78 Accepts]: Start accepts. Automaton has 13342 states and 22537 transitions. Word has length 70 [2022-01-10 23:59:53,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:53,432 INFO L470 AbstractCegarLoop]: Abstraction has 13342 states and 22537 transitions. [2022-01-10 23:59:53,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 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 23:59:53,433 INFO L276 IsEmpty]: Start isEmpty. Operand 13342 states and 22537 transitions. [2022-01-10 23:59:53,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:59:53,442 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:53,443 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] [2022-01-10 23:59:53,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 23:59:53,443 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:53,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:53,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1425709168, now seen corresponding path program 1 times [2022-01-10 23:59:53,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:53,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957992852] [2022-01-10 23:59:53,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:53,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:53,544 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 23:59:53,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:53,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957992852] [2022-01-10 23:59:53,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957992852] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:53,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:53,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:53,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12314718] [2022-01-10 23:59:53,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:53,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:59:53,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:53,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:59:53,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:59:53,546 INFO L87 Difference]: Start difference. First operand 13342 states and 22537 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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 23:59:55,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:55,018 INFO L93 Difference]: Finished difference Result 18828 states and 31266 transitions. [2022-01-10 23:59:55,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 23:59:55,019 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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 70 [2022-01-10 23:59:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:55,037 INFO L225 Difference]: With dead ends: 18828 [2022-01-10 23:59:55,037 INFO L226 Difference]: Without dead ends: 13464 [2022-01-10 23:59:55,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-01-10 23:59:55,042 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 1649 mSDsluCounter, 3264 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1649 SdHoareTripleChecker+Valid, 4063 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:55,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1649 Valid, 4063 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:59:55,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13464 states. [2022-01-10 23:59:56,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13464 to 13218. [2022-01-10 23:59:56,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13218 states, 13216 states have (on average 1.6856083535108959) internal successors, (22277), 13217 states have internal predecessors, (22277), 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 23:59:56,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13218 states to 13218 states and 22277 transitions. [2022-01-10 23:59:56,243 INFO L78 Accepts]: Start accepts. Automaton has 13218 states and 22277 transitions. Word has length 70 [2022-01-10 23:59:56,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:56,243 INFO L470 AbstractCegarLoop]: Abstraction has 13218 states and 22277 transitions. [2022-01-10 23:59:56,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 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 23:59:56,243 INFO L276 IsEmpty]: Start isEmpty. Operand 13218 states and 22277 transitions. [2022-01-10 23:59:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:59:56,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:56,253 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 23:59:56,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 23:59:56,253 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:56,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:56,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1092155341, now seen corresponding path program 1 times [2022-01-10 23:59:56,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:56,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843613507] [2022-01-10 23:59:56,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:56,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:56,367 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 23:59:56,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:56,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843613507] [2022-01-10 23:59:56,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843613507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:56,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:56,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:59:56,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352845528] [2022-01-10 23:59:56,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:56,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:59:56,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:56,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:59:56,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:59:56,369 INFO L87 Difference]: Start difference. First operand 13218 states and 22277 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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 23:59:57,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:59:57,787 INFO L93 Difference]: Finished difference Result 16452 states and 27374 transitions. [2022-01-10 23:59:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 23:59:57,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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 23:59:57,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:59:57,808 INFO L225 Difference]: With dead ends: 16452 [2022-01-10 23:59:57,808 INFO L226 Difference]: Without dead ends: 13460 [2022-01-10 23:59:57,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:59:57,815 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 2780 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2780 SdHoareTripleChecker+Valid, 2839 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:59:57,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2780 Valid, 2839 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:59:57,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13460 states. [2022-01-10 23:59:59,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13460 to 13188. [2022-01-10 23:59:59,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13188 states, 13186 states have (on average 1.684893068405885) internal successors, (22217), 13187 states have internal predecessors, (22217), 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 23:59:59,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 22217 transitions. [2022-01-10 23:59:59,120 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 22217 transitions. Word has length 71 [2022-01-10 23:59:59,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:59:59,121 INFO L470 AbstractCegarLoop]: Abstraction has 13188 states and 22217 transitions. [2022-01-10 23:59:59,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 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 23:59:59,121 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 22217 transitions. [2022-01-10 23:59:59,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:59:59,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:59:59,130 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 23:59:59,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 23:59:59,131 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:59:59,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:59:59,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1288668846, now seen corresponding path program 1 times [2022-01-10 23:59:59,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:59:59,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882242689] [2022-01-10 23:59:59,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:59:59,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:59:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:59:59,226 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 23:59:59,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:59:59,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882242689] [2022-01-10 23:59:59,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882242689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:59:59,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:59:59,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:59:59,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215567521] [2022-01-10 23:59:59,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:59:59,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:59:59,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:59:59,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:59:59,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:59:59,228 INFO L87 Difference]: Start difference. First operand 13188 states and 22217 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 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) [2022-01-11 00:00:03,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:00:03,899 INFO L93 Difference]: Finished difference Result 32702 states and 52315 transitions. [2022-01-11 00:00:03,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:00:03,900 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 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 [2022-01-11 00:00:03,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:00:03,949 INFO L225 Difference]: With dead ends: 32702 [2022-01-11 00:00:03,949 INFO L226 Difference]: Without dead ends: 29900 [2022-01-11 00:00:03,959 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 [2022-01-11 00:00:03,960 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 1974 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1974 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:00:03,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1974 Valid, 3100 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:00:03,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29900 states. [2022-01-11 00:00:06,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29900 to 18030. [2022-01-11 00:00:06,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18030 states, 18028 states have (on average 1.63645440426004) internal successors, (29502), 18029 states have internal predecessors, (29502), 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) [2022-01-11 00:00:06,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18030 states to 18030 states and 29502 transitions. [2022-01-11 00:00:06,356 INFO L78 Accepts]: Start accepts. Automaton has 18030 states and 29502 transitions. Word has length 71 [2022-01-11 00:00:06,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:00:06,357 INFO L470 AbstractCegarLoop]: Abstraction has 18030 states and 29502 transitions. [2022-01-11 00:00:06,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 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) [2022-01-11 00:00:06,357 INFO L276 IsEmpty]: Start isEmpty. Operand 18030 states and 29502 transitions. [2022-01-11 00:00:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 00:00:06,370 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:00:06,370 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] [2022-01-11 00:00:06,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 00:00:06,370 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:00:06,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:00:06,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1293077428, now seen corresponding path program 1 times [2022-01-11 00:00:06,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:00:06,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075812378] [2022-01-11 00:00:06,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:00:06,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:00:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:00:06,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:00:06,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:00:06,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075812378] [2022-01-11 00:00:06,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075812378] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:00:06,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:00:06,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:00:06,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396513460] [2022-01-11 00:00:06,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:00:06,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:00:06,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:00:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:00:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:00:06,510 INFO L87 Difference]: Start difference. First operand 18030 states and 29502 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) [2022-01-11 00:00:11,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:00:11,269 INFO L93 Difference]: Finished difference Result 28651 states and 45924 transitions. [2022-01-11 00:00:11,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:00:11,270 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 [2022-01-11 00:00:11,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:00:11,318 INFO L225 Difference]: With dead ends: 28651 [2022-01-11 00:00:11,318 INFO L226 Difference]: Without dead ends: 28640 [2022-01-11 00:00:11,326 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 [2022-01-11 00:00:11,327 INFO L933 BasicCegarLoop]: 762 mSDtfsCounter, 1125 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:00:11,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 2853 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:00:11,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28640 states. [2022-01-11 00:00:13,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28640 to 18187. [2022-01-11 00:00:13,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18187 states, 18185 states have (on average 1.6307946109430849) internal successors, (29656), 18186 states have internal predecessors, (29656), 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) [2022-01-11 00:00:13,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18187 states to 18187 states and 29656 transitions. [2022-01-11 00:00:13,876 INFO L78 Accepts]: Start accepts. Automaton has 18187 states and 29656 transitions. Word has length 72 [2022-01-11 00:00:13,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:00:13,876 INFO L470 AbstractCegarLoop]: Abstraction has 18187 states and 29656 transitions. [2022-01-11 00:00:13,877 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) [2022-01-11 00:00:13,877 INFO L276 IsEmpty]: Start isEmpty. Operand 18187 states and 29656 transitions. [2022-01-11 00:00:13,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 00:00:13,887 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:00:13,888 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] [2022-01-11 00:00:13,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 00:00:13,888 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:00:13,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:00:13,888 INFO L85 PathProgramCache]: Analyzing trace with hash -382664468, now seen corresponding path program 1 times [2022-01-11 00:00:13,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:00:13,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536654864] [2022-01-11 00:00:13,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:00:13,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:00:13,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:00:14,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:00:14,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:00:14,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536654864] [2022-01-11 00:00:14,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536654864] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:00:14,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:00:14,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-11 00:00:14,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707216451] [2022-01-11 00:00:14,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:00:14,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 00:00:14,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:00:14,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 00:00:14,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-11 00:00:14,028 INFO L87 Difference]: Start difference. First operand 18187 states and 29656 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 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)