/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/minepump_spec5_product46.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:07:44,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:07:44,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:07:44,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-11 00:07:44,989 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-11 00:07:44,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-11 00:07:44,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-11 00:07:44,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-11 00:07:44,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-11 00:07:44,998 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-11 00:07:44,999 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-11 00:07:45,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-11 00:07:45,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:07:45,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:07:45,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:07:45,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:07:45,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:07:45,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:07:45,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:07:45,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:07:45,006 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:07:45,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:07:45,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:07:45,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:07:45,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:07:45,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:07:45,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:07:45,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:07:45,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:07:45,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:07:45,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:07:45,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:07:45,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:07:45,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:07:45,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:07:45,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:07:45,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:07:45,019 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:07:45,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:07:45,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:07:45,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:07:45,025 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 [2022-01-11 00:07:45,045 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:07:45,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:07:45,045 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:07:45,045 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:07:45,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:07:45,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:07:45,046 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:07:45,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:07:45,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:07:45,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:07:45,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:07:45,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:07:45,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:07:45,047 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:07:45,047 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:07:45,047 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:07:45,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:07:45,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:07:45,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:07:45,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:07:45,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:07:45,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:07:45,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:07:45,048 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:07:45,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:07:45,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:07:45,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:07:45,048 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:07:45,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:07:45,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:07:45,048 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:07:45,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:07:45,049 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:07:45,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:07:45,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:07:45,280 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:07:45,282 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:07:45,283 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:07:45,285 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:07:45,286 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2022-01-11 00:07:45,347 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f41150fb/da5bd840a7854286b1cfb9f06cb61abe/FLAG3f8fadef9 [2022-01-11 00:07:45,770 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:07:45,771 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product46.cil.c [2022-01-11 00:07:45,784 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f41150fb/da5bd840a7854286b1cfb9f06cb61abe/FLAG3f8fadef9 [2022-01-11 00:07:46,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f41150fb/da5bd840a7854286b1cfb9f06cb61abe [2022-01-11 00:07:46,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:07:46,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:07:46,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:07:46,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:07:46,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:07:46,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:07:46" (1/1) ... [2022-01-11 00:07:46,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3451b067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:46, skipping insertion in model container [2022-01-11 00:07:46,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:07:46" (1/1) ... [2022-01-11 00:07:46,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:07:46,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:07:46,476 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/minepump_spec5_product46.cil.c[15211,15224] [2022-01-11 00:07:46,498 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:07:46,513 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-11 00:07:46,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:07:46,565 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/minepump_spec5_product46.cil.c[15211,15224] [2022-01-11 00:07:46,581 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:07:46,585 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:07:46,635 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/minepump_spec5_product46.cil.c[15211,15224] [2022-01-11 00:07:46,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:07:46,665 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:07:46,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:46 WrapperNode [2022-01-11 00:07:46,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:07:46,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:07:46,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:07:46,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:07:46,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:46" (1/1) ... [2022-01-11 00:07:46,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:46" (1/1) ... [2022-01-11 00:07:46,723 INFO L137 Inliner]: procedures = 59, calls = 159, calls flagged for inlining = 56, calls inlined = 103, statements flattened = 750 [2022-01-11 00:07:46,723 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:07:46,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:07:46,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:07:46,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:07:46,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:46" (1/1) ... [2022-01-11 00:07:46,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:46" (1/1) ... [2022-01-11 00:07:46,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:46" (1/1) ... [2022-01-11 00:07:46,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:46" (1/1) ... [2022-01-11 00:07:46,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:46" (1/1) ... [2022-01-11 00:07:46,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:46" (1/1) ... [2022-01-11 00:07:46,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:46" (1/1) ... [2022-01-11 00:07:46,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:07:46,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:07:46,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:07:46,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:07:46,772 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:46" (1/1) ... [2022-01-11 00:07:46,777 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:07:46,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:07:46,799 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) [2022-01-11 00:07:46,806 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 [2022-01-11 00:07:46,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:07:46,842 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:07:46,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:07:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:07:46,918 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:07:46,920 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:07:47,354 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:07:47,360 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:07:47,360 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-11 00:07:47,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:07:47 BoogieIcfgContainer [2022-01-11 00:07:47,362 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:07:47,362 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:07:47,362 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:07:47,368 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:07:47,371 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:07:47" (1/1) ... [2022-01-11 00:07:47,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:07:47 BasicIcfg [2022-01-11 00:07:47,515 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:07:47,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:07:47,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:07:47,519 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:07:47,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:07:46" (1/4) ... [2022-01-11 00:07:47,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9f2aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:07:47, skipping insertion in model container [2022-01-11 00:07:47,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:07:46" (2/4) ... [2022-01-11 00:07:47,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9f2aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:07:47, skipping insertion in model container [2022-01-11 00:07:47,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:07:47" (3/4) ... [2022-01-11 00:07:47,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9f2aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:07:47, skipping insertion in model container [2022-01-11 00:07:47,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:07:47" (4/4) ... [2022-01-11 00:07:47,521 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product46.cil.cTransformedIcfg [2022-01-11 00:07:47,524 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:07:47,525 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-11 00:07:47,568 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:07:47,573 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 [2022-01-11 00:07:47,574 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-11 00:07:47,591 INFO L276 IsEmpty]: Start isEmpty. Operand has 194 states, 190 states have (on average 1.368421052631579) internal successors, (260), 193 states have internal predecessors, (260), 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 00:07:47,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-11 00:07:47,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:47,597 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] [2022-01-11 00:07:47,597 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:47,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:47,601 INFO L85 PathProgramCache]: Analyzing trace with hash -56730556, now seen corresponding path program 1 times [2022-01-11 00:07:47,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:47,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816582296] [2022-01-11 00:07:47,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:47,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:47,993 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 00:07:47,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:47,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816582296] [2022-01-11 00:07:47,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816582296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:47,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:47,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:07:47,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084749658] [2022-01-11 00:07:47,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:48,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-11 00:07:48,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:48,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-11 00:07:48,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-11 00:07:48,026 INFO L87 Difference]: Start difference. First operand has 194 states, 190 states have (on average 1.368421052631579) internal successors, (260), 193 states have internal predecessors, (260), 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 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 00:07:48,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:48,096 INFO L93 Difference]: Finished difference Result 377 states and 508 transitions. [2022-01-11 00:07:48,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-11 00:07:48,098 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 21 [2022-01-11 00:07:48,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:48,103 INFO L225 Difference]: With dead ends: 377 [2022-01-11 00:07:48,104 INFO L226 Difference]: Without dead ends: 184 [2022-01-11 00:07:48,106 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 [2022-01-11 00:07:48,108 INFO L933 BasicCegarLoop]: 250 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, 250 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 [2022-01-11 00:07:48,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:48,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-01-11 00:07:48,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-01-11 00:07:48,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 181 states have (on average 1.3370165745856353) internal successors, (242), 183 states have internal predecessors, (242), 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 00:07:48,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 242 transitions. [2022-01-11 00:07:48,139 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 242 transitions. Word has length 21 [2022-01-11 00:07:48,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:48,139 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 242 transitions. [2022-01-11 00:07:48,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 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 00:07:48,140 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 242 transitions. [2022-01-11 00:07:48,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-01-11 00:07:48,140 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:48,140 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] [2022-01-11 00:07:48,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:07:48,141 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:48,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:48,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1066531758, now seen corresponding path program 1 times [2022-01-11 00:07:48,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:48,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192124003] [2022-01-11 00:07:48,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:48,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:48,232 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 00:07:48,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:48,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192124003] [2022-01-11 00:07:48,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192124003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:48,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:48,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:07:48,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583918076] [2022-01-11 00:07:48,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:48,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:07:48,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:48,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:07:48,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:07:48,235 INFO L87 Difference]: Start difference. First operand 184 states and 242 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 00:07:48,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:48,261 INFO L93 Difference]: Finished difference Result 360 states and 476 transitions. [2022-01-11 00:07:48,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:07:48,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 22 [2022-01-11 00:07:48,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:48,263 INFO L225 Difference]: With dead ends: 360 [2022-01-11 00:07:48,263 INFO L226 Difference]: Without dead ends: 184 [2022-01-11 00:07:48,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:07:48,265 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 224 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:48,265 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 236 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:48,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-01-11 00:07:48,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2022-01-11 00:07:48,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 181 states have (on average 1.3204419889502763) internal successors, (239), 183 states have internal predecessors, (239), 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 00:07:48,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 239 transitions. [2022-01-11 00:07:48,276 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 239 transitions. Word has length 22 [2022-01-11 00:07:48,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:48,276 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 239 transitions. [2022-01-11 00:07:48,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 2 states have internal predecessors, (22), 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 00:07:48,276 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 239 transitions. [2022-01-11 00:07:48,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-11 00:07:48,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:48,277 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] [2022-01-11 00:07:48,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:07:48,278 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:48,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:48,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1664743154, now seen corresponding path program 1 times [2022-01-11 00:07:48,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:48,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547824004] [2022-01-11 00:07:48,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:48,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:48,354 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 00:07:48,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:48,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547824004] [2022-01-11 00:07:48,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547824004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:48,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:48,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:07:48,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241164495] [2022-01-11 00:07:48,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:48,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:07:48,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:48,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:07:48,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:07:48,356 INFO L87 Difference]: Start difference. First operand 184 states and 239 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 00:07:48,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:48,425 INFO L93 Difference]: Finished difference Result 437 states and 566 transitions. [2022-01-11 00:07:48,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:07:48,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 27 [2022-01-11 00:07:48,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:48,427 INFO L225 Difference]: With dead ends: 437 [2022-01-11 00:07:48,427 INFO L226 Difference]: Without dead ends: 261 [2022-01-11 00:07:48,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:07:48,428 INFO L933 BasicCegarLoop]: 221 mSDtfsCounter, 169 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:48,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 329 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:07:48,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-01-11 00:07:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 255. [2022-01-11 00:07:48,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 252 states have (on average 1.2817460317460319) internal successors, (323), 254 states have internal predecessors, (323), 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 00:07:48,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 323 transitions. [2022-01-11 00:07:48,454 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 323 transitions. Word has length 27 [2022-01-11 00:07:48,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:48,454 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 323 transitions. [2022-01-11 00:07:48,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 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 00:07:48,454 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 323 transitions. [2022-01-11 00:07:48,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-11 00:07:48,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:48,455 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] [2022-01-11 00:07:48,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:07:48,455 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:48,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:48,456 INFO L85 PathProgramCache]: Analyzing trace with hash 563551987, now seen corresponding path program 1 times [2022-01-11 00:07:48,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:48,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401832069] [2022-01-11 00:07:48,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:48,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:48,539 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 00:07:48,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:48,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401832069] [2022-01-11 00:07:48,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401832069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:48,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:48,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:07:48,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093968646] [2022-01-11 00:07:48,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:48,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:07:48,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:48,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:07:48,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:07:48,541 INFO L87 Difference]: Start difference. First operand 255 states and 323 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 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 00:07:48,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:48,740 INFO L93 Difference]: Finished difference Result 906 states and 1136 transitions. [2022-01-11 00:07:48,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-11 00:07:48,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2022-01-11 00:07:48,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:48,743 INFO L225 Difference]: With dead ends: 906 [2022-01-11 00:07:48,743 INFO L226 Difference]: Without dead ends: 659 [2022-01-11 00:07:48,745 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 00:07:48,745 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 695 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:48,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 1257 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:07:48,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-01-11 00:07:48,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 252. [2022-01-11 00:07:48,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 249 states have (on average 1.2610441767068272) internal successors, (314), 251 states have internal predecessors, (314), 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 00:07:48,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 314 transitions. [2022-01-11 00:07:48,769 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 314 transitions. Word has length 33 [2022-01-11 00:07:48,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:48,769 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 314 transitions. [2022-01-11 00:07:48,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 4 states have internal predecessors, (33), 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 00:07:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 314 transitions. [2022-01-11 00:07:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 00:07:48,770 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:48,771 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] [2022-01-11 00:07:48,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:07:48,771 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:48,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:48,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1845411189, now seen corresponding path program 1 times [2022-01-11 00:07:48,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:48,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125038909] [2022-01-11 00:07:48,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:48,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:48,827 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 00:07:48,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:48,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125038909] [2022-01-11 00:07:48,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125038909] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:48,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:48,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:07:48,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711969111] [2022-01-11 00:07:48,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:48,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:07:48,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:48,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:07:48,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:07:48,829 INFO L87 Difference]: Start difference. First operand 252 states and 314 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 00:07:48,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:48,933 INFO L93 Difference]: Finished difference Result 653 states and 803 transitions. [2022-01-11 00:07:48,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:07:48,933 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 37 [2022-01-11 00:07:48,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:48,935 INFO L225 Difference]: With dead ends: 653 [2022-01-11 00:07:48,935 INFO L226 Difference]: Without dead ends: 409 [2022-01-11 00:07:48,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:07:48,936 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 351 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:48,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 954 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:07:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-01-11 00:07:48,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 270. [2022-01-11 00:07:48,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 267 states have (on average 1.243445692883895) internal successors, (332), 269 states have internal predecessors, (332), 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 00:07:48,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 332 transitions. [2022-01-11 00:07:48,953 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 332 transitions. Word has length 37 [2022-01-11 00:07:48,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:48,954 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 332 transitions. [2022-01-11 00:07:48,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 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 00:07:48,954 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 332 transitions. [2022-01-11 00:07:48,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 00:07:48,955 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:48,955 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] [2022-01-11 00:07:48,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:07:48,955 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:48,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:48,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1452483754, now seen corresponding path program 1 times [2022-01-11 00:07:48,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:48,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080170648] [2022-01-11 00:07:48,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:48,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:48,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:48,987 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 00:07:48,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:48,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080170648] [2022-01-11 00:07:48,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080170648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:48,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:48,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 00:07:48,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119445469] [2022-01-11 00:07:48,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:48,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 00:07:48,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:48,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 00:07:48,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 00:07:48,989 INFO L87 Difference]: Start difference. First operand 270 states and 332 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 00:07:49,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:49,082 INFO L93 Difference]: Finished difference Result 710 states and 860 transitions. [2022-01-11 00:07:49,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-11 00:07:49,082 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 37 [2022-01-11 00:07:49,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:49,084 INFO L225 Difference]: With dead ends: 710 [2022-01-11 00:07:49,084 INFO L226 Difference]: Without dead ends: 448 [2022-01-11 00:07:49,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:07:49,085 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 315 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:49,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 717 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:07:49,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-01-11 00:07:49,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 282. [2022-01-11 00:07:49,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 279 states have (on average 1.2329749103942653) internal successors, (344), 281 states have internal predecessors, (344), 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 00:07:49,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 344 transitions. [2022-01-11 00:07:49,103 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 344 transitions. Word has length 37 [2022-01-11 00:07:49,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:49,104 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 344 transitions. [2022-01-11 00:07:49,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 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 00:07:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 344 transitions. [2022-01-11 00:07:49,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 00:07:49,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:49,105 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] [2022-01-11 00:07:49,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:07:49,105 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:49,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:49,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1043659529, now seen corresponding path program 1 times [2022-01-11 00:07:49,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:49,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387522595] [2022-01-11 00:07:49,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:49,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:49,156 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 00:07:49,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:49,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387522595] [2022-01-11 00:07:49,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387522595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:49,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:49,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:07:49,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074088189] [2022-01-11 00:07:49,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:49,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:07:49,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:49,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:07:49,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:07:49,158 INFO L87 Difference]: Start difference. First operand 282 states and 344 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 00:07:49,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:49,216 INFO L93 Difference]: Finished difference Result 641 states and 778 transitions. [2022-01-11 00:07:49,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:07:49,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 37 [2022-01-11 00:07:49,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:49,218 INFO L225 Difference]: With dead ends: 641 [2022-01-11 00:07:49,218 INFO L226 Difference]: Without dead ends: 318 [2022-01-11 00:07:49,218 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 [2022-01-11 00:07:49,219 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 84 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:49,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 428 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:49,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-01-11 00:07:49,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2022-01-11 00:07:49,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 315 states have (on average 1.2253968253968255) internal successors, (386), 317 states have internal predecessors, (386), 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 00:07:49,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 386 transitions. [2022-01-11 00:07:49,241 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 386 transitions. Word has length 37 [2022-01-11 00:07:49,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:49,241 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 386 transitions. [2022-01-11 00:07:49,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 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 00:07:49,242 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 386 transitions. [2022-01-11 00:07:49,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-11 00:07:49,242 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:49,242 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] [2022-01-11 00:07:49,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:07:49,243 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:49,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:49,243 INFO L85 PathProgramCache]: Analyzing trace with hash 604155998, now seen corresponding path program 1 times [2022-01-11 00:07:49,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:49,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31322689] [2022-01-11 00:07:49,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:49,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:49,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:07:49,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:49,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31322689] [2022-01-11 00:07:49,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31322689] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:49,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:49,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:07:49,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574785665] [2022-01-11 00:07:49,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:49,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:07:49,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:49,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:07:49,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:07:49,324 INFO L87 Difference]: Start difference. First operand 318 states and 386 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 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 00:07:49,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:49,631 INFO L93 Difference]: Finished difference Result 1515 states and 1847 transitions. [2022-01-11 00:07:49,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 00:07:49,632 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 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 46 [2022-01-11 00:07:49,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:49,635 INFO L225 Difference]: With dead ends: 1515 [2022-01-11 00:07:49,635 INFO L226 Difference]: Without dead ends: 1111 [2022-01-11 00:07:49,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-11 00:07:49,637 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 1000 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:49,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 1542 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-11 00:07:49,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2022-01-11 00:07:49,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 572. [2022-01-11 00:07:49,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 569 states have (on average 1.2003514938488578) internal successors, (683), 571 states have internal predecessors, (683), 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 00:07:49,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 683 transitions. [2022-01-11 00:07:49,746 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 683 transitions. Word has length 46 [2022-01-11 00:07:49,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:49,746 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 683 transitions. [2022-01-11 00:07:49,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 5 states have internal predecessors, (46), 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 00:07:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 683 transitions. [2022-01-11 00:07:49,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-11 00:07:49,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:49,747 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:07:49,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:07:49,747 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:49,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:49,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1528677730, now seen corresponding path program 1 times [2022-01-11 00:07:49,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:49,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553867638] [2022-01-11 00:07:49,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:49,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:49,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:07:49,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:49,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553867638] [2022-01-11 00:07:49,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553867638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:49,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:49,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:07:49,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427862077] [2022-01-11 00:07:49,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:49,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:07:49,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:49,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:07:49,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:07:49,838 INFO L87 Difference]: Start difference. First operand 572 states and 683 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:49,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:49,881 INFO L93 Difference]: Finished difference Result 572 states and 683 transitions. [2022-01-11 00:07:49,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:07:49,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-01-11 00:07:49,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:49,884 INFO L225 Difference]: With dead ends: 572 [2022-01-11 00:07:49,884 INFO L226 Difference]: Without dead ends: 267 [2022-01-11 00:07:49,884 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 [2022-01-11 00:07:49,886 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 51 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:49,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 101 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:49,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-01-11 00:07:49,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 267. [2022-01-11 00:07:49,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 266 states have (on average 1.2293233082706767) internal successors, (327), 266 states have internal predecessors, (327), 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 00:07:49,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 327 transitions. [2022-01-11 00:07:49,918 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 327 transitions. Word has length 68 [2022-01-11 00:07:49,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:49,918 INFO L470 AbstractCegarLoop]: Abstraction has 267 states and 327 transitions. [2022-01-11 00:07:49,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:49,918 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 327 transitions. [2022-01-11 00:07:49,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-11 00:07:49,919 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:49,920 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:07:49,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:07:49,920 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:49,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:49,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1224212322, now seen corresponding path program 1 times [2022-01-11 00:07:49,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:49,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504553861] [2022-01-11 00:07:49,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:49,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:07:50,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:50,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504553861] [2022-01-11 00:07:50,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504553861] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:50,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:50,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:07:50,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547363211] [2022-01-11 00:07:50,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:50,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:07:50,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:50,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:07:50,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:07:50,020 INFO L87 Difference]: Start difference. First operand 267 states and 327 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:50,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:50,139 INFO L93 Difference]: Finished difference Result 610 states and 762 transitions. [2022-01-11 00:07:50,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:07:50,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-01-11 00:07:50,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:50,142 INFO L225 Difference]: With dead ends: 610 [2022-01-11 00:07:50,142 INFO L226 Difference]: Without dead ends: 351 [2022-01-11 00:07:50,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:07:50,142 INFO L933 BasicCegarLoop]: 161 mSDtfsCounter, 183 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:50,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 384 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:50,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2022-01-11 00:07:50,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 247. [2022-01-11 00:07:50,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.2073170731707317) internal successors, (297), 246 states have internal predecessors, (297), 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 00:07:50,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 297 transitions. [2022-01-11 00:07:50,173 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 297 transitions. Word has length 75 [2022-01-11 00:07:50,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:50,173 INFO L470 AbstractCegarLoop]: Abstraction has 247 states and 297 transitions. [2022-01-11 00:07:50,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:07:50,173 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 297 transitions. [2022-01-11 00:07:50,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-01-11 00:07:50,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:50,174 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:07:50,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:07:50,175 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:50,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:50,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1497726981, now seen corresponding path program 1 times [2022-01-11 00:07:50,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:50,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510234799] [2022-01-11 00:07:50,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:50,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:50,244 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 78 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-01-11 00:07:50,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:50,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510234799] [2022-01-11 00:07:50,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510234799] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:07:50,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078027449] [2022-01-11 00:07:50,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:50,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:07:50,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:07:50,246 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:07:50,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 00:07:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:50,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-11 00:07:50,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:07:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-11 00:07:50,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:07:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-11 00:07:50,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078027449] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:07:50,812 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:07:50,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13 [2022-01-11 00:07:50,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991163781] [2022-01-11 00:07:50,815 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:07:50,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-11 00:07:50,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:50,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-11 00:07:50,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-01-11 00:07:50,817 INFO L87 Difference]: Start difference. First operand 247 states and 297 transitions. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 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 00:07:51,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:51,969 INFO L93 Difference]: Finished difference Result 2065 states and 2506 transitions. [2022-01-11 00:07:51,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-11 00:07:51,984 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 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 136 [2022-01-11 00:07:51,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:51,989 INFO L225 Difference]: With dead ends: 2065 [2022-01-11 00:07:51,989 INFO L226 Difference]: Without dead ends: 1778 [2022-01-11 00:07:51,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=776, Invalid=3256, Unknown=0, NotChecked=0, Total=4032 [2022-01-11 00:07:51,992 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 1705 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1705 SdHoareTripleChecker+Valid, 1697 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:51,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1705 Valid, 1697 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-11 00:07:51,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2022-01-11 00:07:52,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 608. [2022-01-11 00:07:52,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 607 states have (on average 1.1795716639209226) internal successors, (716), 607 states have internal predecessors, (716), 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 00:07:52,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 716 transitions. [2022-01-11 00:07:52,179 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 716 transitions. Word has length 136 [2022-01-11 00:07:52,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:52,179 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 716 transitions. [2022-01-11 00:07:52,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 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 00:07:52,179 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 716 transitions. [2022-01-11 00:07:52,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-11 00:07:52,181 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:52,181 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:07:52,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 00:07:52,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-11 00:07:52,395 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:52,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:52,396 INFO L85 PathProgramCache]: Analyzing trace with hash -2041579987, now seen corresponding path program 1 times [2022-01-11 00:07:52,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:52,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341370418] [2022-01-11 00:07:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:52,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:52,542 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-01-11 00:07:52,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:52,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341370418] [2022-01-11 00:07:52,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341370418] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:52,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:52,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:07:52,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193270159] [2022-01-11 00:07:52,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:52,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:07:52,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:52,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:07:52,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:07:52,544 INFO L87 Difference]: Start difference. First operand 608 states and 716 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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 00:07:52,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:52,738 INFO L93 Difference]: Finished difference Result 1863 states and 2201 transitions. [2022-01-11 00:07:52,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-11 00:07:52,739 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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 140 [2022-01-11 00:07:52,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:52,742 INFO L225 Difference]: With dead ends: 1863 [2022-01-11 00:07:52,743 INFO L226 Difference]: Without dead ends: 1263 [2022-01-11 00:07:52,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-11 00:07:52,744 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 476 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:52,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 978 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:52,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1263 states. [2022-01-11 00:07:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1263 to 577. [2022-01-11 00:07:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 576 states have (on average 1.1649305555555556) internal successors, (671), 576 states have internal predecessors, (671), 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 00:07:52,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 671 transitions. [2022-01-11 00:07:52,832 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 671 transitions. Word has length 140 [2022-01-11 00:07:52,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:52,832 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 671 transitions. [2022-01-11 00:07:52,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 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 00:07:52,833 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 671 transitions. [2022-01-11 00:07:52,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:07:52,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:52,836 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:07:52,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:07:52,836 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:52,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:52,836 INFO L85 PathProgramCache]: Analyzing trace with hash 405237939, now seen corresponding path program 1 times [2022-01-11 00:07:52,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:52,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409440782] [2022-01-11 00:07:52,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:52,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:52,907 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-11 00:07:52,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:52,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409440782] [2022-01-11 00:07:52,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409440782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:52,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:52,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-11 00:07:52,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838102981] [2022-01-11 00:07:52,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:52,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-11 00:07:52,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:52,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-11 00:07:52,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-11 00:07:52,909 INFO L87 Difference]: Start difference. First operand 577 states and 671 transitions. Second operand has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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 00:07:53,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:53,054 INFO L93 Difference]: Finished difference Result 1516 states and 1768 transitions. [2022-01-11 00:07:53,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 00:07:53,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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 142 [2022-01-11 00:07:53,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:53,057 INFO L225 Difference]: With dead ends: 1516 [2022-01-11 00:07:53,057 INFO L226 Difference]: Without dead ends: 947 [2022-01-11 00:07:53,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-11 00:07:53,059 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 288 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:53,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 725 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:53,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2022-01-11 00:07:53,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 515. [2022-01-11 00:07:53,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 514 states have (on average 1.1595330739299612) internal successors, (596), 514 states have internal predecessors, (596), 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 00:07:53,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 596 transitions. [2022-01-11 00:07:53,145 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 596 transitions. Word has length 142 [2022-01-11 00:07:53,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:53,145 INFO L470 AbstractCegarLoop]: Abstraction has 515 states and 596 transitions. [2022-01-11 00:07:53,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.333333333333332) internal successors, (116), 6 states have internal predecessors, (116), 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 00:07:53,145 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 596 transitions. [2022-01-11 00:07:53,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:07:53,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:53,147 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:07:53,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:07:53,147 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:53,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:53,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2007220425, now seen corresponding path program 2 times [2022-01-11 00:07:53,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:53,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371929010] [2022-01-11 00:07:53,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:53,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:53,277 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-11 00:07:53,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:53,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371929010] [2022-01-11 00:07:53,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371929010] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:07:53,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146087819] [2022-01-11 00:07:53,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-11 00:07:53,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:07:53,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:07:53,279 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:07:53,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-11 00:07:53,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-11 00:07:53,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-11 00:07:53,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-11 00:07:53,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:07:53,661 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-11 00:07:53,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:07:53,925 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-01-11 00:07:53,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146087819] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-11 00:07:53,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-11 00:07:53,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 20 [2022-01-11 00:07:53,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822552851] [2022-01-11 00:07:53,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:53,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-11 00:07:53,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:53,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-11 00:07:53,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-01-11 00:07:53,926 INFO L87 Difference]: Start difference. First operand 515 states and 596 transitions. Second operand has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 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 00:07:54,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:54,316 INFO L93 Difference]: Finished difference Result 1649 states and 1928 transitions. [2022-01-11 00:07:54,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-11 00:07:54,316 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 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 142 [2022-01-11 00:07:54,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:54,319 INFO L225 Difference]: With dead ends: 1649 [2022-01-11 00:07:54,319 INFO L226 Difference]: Without dead ends: 1365 [2022-01-11 00:07:54,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=809, Unknown=0, NotChecked=0, Total=992 [2022-01-11 00:07:54,320 INFO L933 BasicCegarLoop]: 181 mSDtfsCounter, 637 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:54,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [637 Valid, 689 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:07:54,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2022-01-11 00:07:54,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 892. [2022-01-11 00:07:54,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 1.1705948372615038) internal successors, (1043), 891 states have internal predecessors, (1043), 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 00:07:54,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1043 transitions. [2022-01-11 00:07:54,419 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1043 transitions. Word has length 142 [2022-01-11 00:07:54,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:54,419 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 1043 transitions. [2022-01-11 00:07:54,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.125) internal successors, (121), 8 states have internal predecessors, (121), 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 00:07:54,419 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1043 transitions. [2022-01-11 00:07:54,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-01-11 00:07:54,420 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:54,420 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:07:54,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-11 00:07:54,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-11 00:07:54,659 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:54,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:54,659 INFO L85 PathProgramCache]: Analyzing trace with hash 1323274716, now seen corresponding path program 3 times [2022-01-11 00:07:54,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:54,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438563962] [2022-01-11 00:07:54,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:54,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-01-11 00:07:54,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:54,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438563962] [2022-01-11 00:07:54,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438563962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:07:54,705 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:07:54,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:07:54,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773503283] [2022-01-11 00:07:54,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:07:54,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:07:54,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:54,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:07:54,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:07:54,706 INFO L87 Difference]: Start difference. First operand 892 states and 1043 transitions. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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 00:07:54,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:54,869 INFO L93 Difference]: Finished difference Result 1899 states and 2219 transitions. [2022-01-11 00:07:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-11 00:07:54,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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 144 [2022-01-11 00:07:54,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:54,872 INFO L225 Difference]: With dead ends: 1899 [2022-01-11 00:07:54,872 INFO L226 Difference]: Without dead ends: 1015 [2022-01-11 00:07:54,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 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 00:07:54,873 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 125 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:54,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 456 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:07:54,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2022-01-11 00:07:54,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 892. [2022-01-11 00:07:54,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 891 states have (on average 1.164983164983165) internal successors, (1038), 891 states have internal predecessors, (1038), 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 00:07:54,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1038 transitions. [2022-01-11 00:07:54,964 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1038 transitions. Word has length 144 [2022-01-11 00:07:54,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:54,964 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 1038 transitions. [2022-01-11 00:07:54,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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 00:07:54,965 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1038 transitions. [2022-01-11 00:07:54,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-11 00:07:54,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:07:54,966 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:07:54,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:07:54,966 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:07:54,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:07:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1027864010, now seen corresponding path program 1 times [2022-01-11 00:07:54,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:07:54,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643227353] [2022-01-11 00:07:54,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:54,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:07:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:55,103 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 30 proven. 108 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 00:07:55,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:07:55,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643227353] [2022-01-11 00:07:55,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643227353] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 00:07:55,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1915777387] [2022-01-11 00:07:55,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:07:55,104 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:07:55,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:07:55,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 00:07:55,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-11 00:07:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:07:55,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 994 conjuncts, 37 conjunts are in the unsatisfiable core [2022-01-11 00:07:55,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 00:07:55,953 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 82 proven. 63 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 00:07:55,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 00:07:59,190 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 75 proven. 70 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 00:07:59,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1915777387] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 00:07:59,191 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 00:07:59,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 12] total 23 [2022-01-11 00:07:59,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528423083] [2022-01-11 00:07:59,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 00:07:59,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-11 00:07:59,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:07:59,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-11 00:07:59,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=385, Unknown=0, NotChecked=0, Total=506 [2022-01-11 00:07:59,192 INFO L87 Difference]: Start difference. First operand 892 states and 1038 transitions. Second operand has 23 states, 23 states have (on average 14.608695652173912) internal successors, (336), 23 states have internal predecessors, (336), 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 00:07:59,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:07:59,541 INFO L93 Difference]: Finished difference Result 1816 states and 2121 transitions. [2022-01-11 00:07:59,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-11 00:07:59,542 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 14.608695652173912) internal successors, (336), 23 states have internal predecessors, (336), 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 145 [2022-01-11 00:07:59,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:07:59,542 INFO L225 Difference]: With dead ends: 1816 [2022-01-11 00:07:59,542 INFO L226 Difference]: Without dead ends: 0 [2022-01-11 00:07:59,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 277 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=193, Invalid=563, Unknown=0, NotChecked=0, Total=756 [2022-01-11 00:07:59,544 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 1061 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:07:59,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 1812 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:07:59,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-11 00:07:59,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-11 00:07:59,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 00:07:59,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-11 00:07:59,546 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 145 [2022-01-11 00:07:59,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:07:59,546 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-11 00:07:59,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 14.608695652173912) internal successors, (336), 23 states have internal predecessors, (336), 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 00:07:59,546 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-11 00:07:59,546 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-11 00:07:59,548 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-11 00:07:59,548 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-11 00:07:59,548 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-11 00:07:59,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-01-11 00:07:59,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 00:07:59,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-01-11 00:08:10,415 WARN L228 SmtUtils]: Spent 10.37s on a formula simplification. DAG size of input: 364 DAG size of output: 360 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-11 00:08:27,675 WARN L228 SmtUtils]: Spent 11.21s on a formula simplification. DAG size of input: 246 DAG size of output: 241 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-11 00:08:43,484 WARN L228 SmtUtils]: Spent 15.64s on a formula simplification. DAG size of input: 314 DAG size of output: 309 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or) [2022-01-11 00:08:55,059 WARN L228 SmtUtils]: Spent 11.55s on a formula simplification. DAG size of input: 257 DAG size of output: 251 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)