/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_BITWISE.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:25:22,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:25:22,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:25:22,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:25:22,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:25:22,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:25:22,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:25:22,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:25:22,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:25:22,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:25:22,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:25:22,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:25:22,272 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:25:22,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:25:22,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:25:22,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:25:22,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:25:22,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:25:22,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:25:22,280 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:25:22,281 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:25:22,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:25:22,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:25:22,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:25:22,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:25:22,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:25:22,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:25:22,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:25:22,296 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:25:22,297 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:25:22,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:25:22,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:25:22,298 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:25:22,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:25:22,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:25:22,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:25:22,300 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:25:22,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:25:22,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:25:22,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:25:22,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:25:22,303 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 12:25:22,347 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:25:22,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:25:22,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:25:22,347 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:25:22,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:25:22,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:25:22,349 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:25:22,349 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:25:22,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:25:22,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:25:22,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:25:22,349 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:25:22,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:25:22,350 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:25:22,350 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:25:22,350 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:25:22,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:25:22,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:25:22,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:25:22,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:25:22,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:25:22,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:25:22,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:25:22,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:25:22,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:25:22,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:25:22,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:25:22,356 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:25:22,357 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:25:22,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:25:22,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:25:22,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:25:22,366 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:25:22,367 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:25:22,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:25:22,637 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:25:22,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:25:22,640 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:25:22,642 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:25:22,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product45.cil.c [2022-01-10 12:25:22,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0464e44e0/317bb9cfe809410ba676a187234c67f3/FLAGb65e67ceb [2022-01-10 12:25:23,144 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:25:23,145 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec3_product45.cil.c [2022-01-10 12:25:23,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0464e44e0/317bb9cfe809410ba676a187234c67f3/FLAGb65e67ceb [2022-01-10 12:25:23,170 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0464e44e0/317bb9cfe809410ba676a187234c67f3 [2022-01-10 12:25:23,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:25:23,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:25:23,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:25:23,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:25:23,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:25:23,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:25:23" (1/1) ... [2022-01-10 12:25:23,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4831a433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:23, skipping insertion in model container [2022-01-10 12:25:23,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:25:23" (1/1) ... [2022-01-10 12:25:23,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:25:23,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:25:23,509 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_spec3_product45.cil.c[8617,8630] [2022-01-10 12:25:23,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:25:23,583 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:25:23,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:25:23,627 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_spec3_product45.cil.c[8617,8630] [2022-01-10 12:25:23,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:25:23,674 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:25:23,709 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_spec3_product45.cil.c[8617,8630] [2022-01-10 12:25:23,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:25:23,742 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:25:23,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:23 WrapperNode [2022-01-10 12:25:23,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:25:23,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:25:23,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:25:23,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:25:23,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:23" (1/1) ... [2022-01-10 12:25:23,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:23" (1/1) ... [2022-01-10 12:25:23,826 INFO L137 Inliner]: procedures = 56, calls = 156, calls flagged for inlining = 53, calls inlined = 98, statements flattened = 740 [2022-01-10 12:25:23,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:25:23,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:25:23,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:25:23,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:25:23,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:23" (1/1) ... [2022-01-10 12:25:23,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:23" (1/1) ... [2022-01-10 12:25:23,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:23" (1/1) ... [2022-01-10 12:25:23,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:23" (1/1) ... [2022-01-10 12:25:23,855 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:23" (1/1) ... [2022-01-10 12:25:23,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:23" (1/1) ... [2022-01-10 12:25:23,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:23" (1/1) ... [2022-01-10 12:25:23,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:25:23,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:25:23,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:25:23,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:25:23,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:23" (1/1) ... [2022-01-10 12:25:23,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:25:23,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:25:23,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 12:25:23,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 12:25:23,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:25:23,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:25:23,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:25:23,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:25:24,023 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:25:24,025 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:25:24,457 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:25:24,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:25:24,464 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 12:25:24,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:25:24 BoogieIcfgContainer [2022-01-10 12:25:24,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:25:24,466 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:25:24,466 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:25:24,470 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:25:24,472 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:25:24" (1/1) ... [2022-01-10 12:25:24,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:25:24 BasicIcfg [2022-01-10 12:25:24,613 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:25:24,614 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:25:24,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:25:24,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:25:24,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:25:23" (1/4) ... [2022-01-10 12:25:24,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cf09e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:25:24, skipping insertion in model container [2022-01-10 12:25:24,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:25:23" (2/4) ... [2022-01-10 12:25:24,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cf09e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:25:24, skipping insertion in model container [2022-01-10 12:25:24,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:25:24" (3/4) ... [2022-01-10 12:25:24,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35cf09e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:25:24, skipping insertion in model container [2022-01-10 12:25:24,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:25:24" (4/4) ... [2022-01-10 12:25:24,623 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product45.cil.cTransformedIcfg [2022-01-10 12:25:24,630 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:25:24,630 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-10 12:25:24,668 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:25:24,673 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 12:25:24,674 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-10 12:25:24,688 INFO L276 IsEmpty]: Start isEmpty. Operand has 189 states, 185 states have (on average 1.3783783783783783) internal successors, (255), 188 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:24,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-10 12:25:24,693 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:24,693 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:25:24,694 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:24,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:24,698 INFO L85 PathProgramCache]: Analyzing trace with hash -987478818, now seen corresponding path program 1 times [2022-01-10 12:25:24,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:24,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731478660] [2022-01-10 12:25:24,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:24,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:24,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:24,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731478660] [2022-01-10 12:25:24,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731478660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:24,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:24,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:25:24,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771366265] [2022-01-10 12:25:24,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:24,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:25:24,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:24,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:25:24,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:25:24,965 INFO L87 Difference]: Start difference. First operand has 189 states, 185 states have (on average 1.3783783783783783) internal successors, (255), 188 states have internal predecessors, (255), 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 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:24,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:24,997 INFO L93 Difference]: Finished difference Result 368 states and 499 transitions. [2022-01-10 12:25:25,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:25:25,001 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 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 19 [2022-01-10 12:25:25,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:25,009 INFO L225 Difference]: With dead ends: 368 [2022-01-10 12:25:25,009 INFO L226 Difference]: Without dead ends: 179 [2022-01-10 12:25:25,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:25:25,015 INFO L933 BasicCegarLoop]: 245 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, 245 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:25,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:25:25,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-01-10 12:25:25,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-01-10 12:25:25,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 176 states have (on average 1.3465909090909092) internal successors, (237), 178 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:25,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 237 transitions. [2022-01-10 12:25:25,066 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 237 transitions. Word has length 19 [2022-01-10 12:25:25,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:25,067 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 237 transitions. [2022-01-10 12:25:25,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.5) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:25,067 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 237 transitions. [2022-01-10 12:25:25,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 12:25:25,068 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:25,068 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] [2022-01-10 12:25:25,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:25:25,069 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:25,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:25,070 INFO L85 PathProgramCache]: Analyzing trace with hash -519054125, now seen corresponding path program 1 times [2022-01-10 12:25:25,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:25,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782477671] [2022-01-10 12:25:25,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:25,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:25,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:25,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:25,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:25,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782477671] [2022-01-10 12:25:25,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782477671] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:25,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:25,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:25:25,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681557174] [2022-01-10 12:25:25,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:25,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:25:25,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:25,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:25:25,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:25:25,188 INFO L87 Difference]: Start difference. First operand 179 states and 237 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:25,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:25,236 INFO L93 Difference]: Finished difference Result 351 states and 467 transitions. [2022-01-10 12:25:25,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:25:25,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2022-01-10 12:25:25,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:25,244 INFO L225 Difference]: With dead ends: 351 [2022-01-10 12:25:25,244 INFO L226 Difference]: Without dead ends: 179 [2022-01-10 12:25:25,245 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 [2022-01-10 12:25:25,246 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 223 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:25,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 231 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:25:25,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-01-10 12:25:25,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-01-10 12:25:25,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 176 states have (on average 1.3295454545454546) internal successors, (234), 178 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:25,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 234 transitions. [2022-01-10 12:25:25,265 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 234 transitions. Word has length 20 [2022-01-10 12:25:25,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:25,265 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 234 transitions. [2022-01-10 12:25:25,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:25,265 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 234 transitions. [2022-01-10 12:25:25,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 12:25:25,269 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:25,269 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] [2022-01-10 12:25:25,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:25:25,269 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:25,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:25,270 INFO L85 PathProgramCache]: Analyzing trace with hash 741241719, now seen corresponding path program 1 times [2022-01-10 12:25:25,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:25,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035654292] [2022-01-10 12:25:25,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:25,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:25,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:25,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:25,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035654292] [2022-01-10 12:25:25,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035654292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:25,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:25,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:25:25,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073418425] [2022-01-10 12:25:25,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:25,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:25:25,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:25,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:25:25,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:25:25,351 INFO L87 Difference]: Start difference. First operand 179 states and 234 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:25,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:25,451 INFO L93 Difference]: Finished difference Result 424 states and 553 transitions. [2022-01-10 12:25:25,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:25:25,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 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 25 [2022-01-10 12:25:25,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:25,456 INFO L225 Difference]: With dead ends: 424 [2022-01-10 12:25:25,456 INFO L226 Difference]: Without dead ends: 252 [2022-01-10 12:25:25,464 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 [2022-01-10 12:25:25,465 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 167 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:25,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 326 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:25,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-01-10 12:25:25,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 246. [2022-01-10 12:25:25,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 243 states have (on average 1.2921810699588476) internal successors, (314), 245 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) [2022-01-10 12:25:25,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 314 transitions. [2022-01-10 12:25:25,500 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 314 transitions. Word has length 25 [2022-01-10 12:25:25,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:25,501 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 314 transitions. [2022-01-10 12:25:25,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:25,501 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 314 transitions. [2022-01-10 12:25:25,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-10 12:25:25,502 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:25,502 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] [2022-01-10 12:25:25,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:25:25,511 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:25,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:25,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1551878005, now seen corresponding path program 1 times [2022-01-10 12:25:25,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:25,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465842137] [2022-01-10 12:25:25,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:25,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:25,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:25,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465842137] [2022-01-10 12:25:25,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465842137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:25,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:25,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:25:25,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832987048] [2022-01-10 12:25:25,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:25,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:25,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:25,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:25,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:25:25,638 INFO L87 Difference]: Start difference. First operand 246 states and 314 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:25,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:25,940 INFO L93 Difference]: Finished difference Result 1382 states and 1775 transitions. [2022-01-10 12:25:25,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:25:25,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2022-01-10 12:25:25,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:25,944 INFO L225 Difference]: With dead ends: 1382 [2022-01-10 12:25:25,944 INFO L226 Difference]: Without dead ends: 771 [2022-01-10 12:25:25,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:25:25,955 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 1053 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 1355 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:25,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 1355 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:25:25,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-01-10 12:25:25,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 333. [2022-01-10 12:25:25,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 330 states have (on average 1.284848484848485) internal successors, (424), 332 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:25,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 424 transitions. [2022-01-10 12:25:25,988 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 424 transitions. Word has length 31 [2022-01-10 12:25:25,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:25,989 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 424 transitions. [2022-01-10 12:25:25,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:25,989 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 424 transitions. [2022-01-10 12:25:25,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 12:25:25,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:25,991 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] [2022-01-10 12:25:25,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:25:25,991 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:25,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:25,992 INFO L85 PathProgramCache]: Analyzing trace with hash -604045290, now seen corresponding path program 1 times [2022-01-10 12:25:25,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:25,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531525417] [2022-01-10 12:25:25,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:25,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:26,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:26,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:26,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531525417] [2022-01-10 12:25:26,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531525417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:26,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:26,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:25:26,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314612985] [2022-01-10 12:25:26,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:26,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:25:26,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:26,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:25:26,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:25:26,052 INFO L87 Difference]: Start difference. First operand 333 states and 424 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:26,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:26,168 INFO L93 Difference]: Finished difference Result 1130 states and 1435 transitions. [2022-01-10 12:25:26,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:25:26,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 39 [2022-01-10 12:25:26,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:26,172 INFO L225 Difference]: With dead ends: 1130 [2022-01-10 12:25:26,172 INFO L226 Difference]: Without dead ends: 804 [2022-01-10 12:25:26,173 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 [2022-01-10 12:25:26,174 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 573 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:26,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 740 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:26,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-01-10 12:25:26,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 345. [2022-01-10 12:25:26,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 342 states have (on average 1.2690058479532165) internal successors, (434), 344 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:26,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 434 transitions. [2022-01-10 12:25:26,213 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 434 transitions. Word has length 39 [2022-01-10 12:25:26,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:26,217 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 434 transitions. [2022-01-10 12:25:26,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 434 transitions. [2022-01-10 12:25:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 12:25:26,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:26,222 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] [2022-01-10 12:25:26,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:25:26,223 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:26,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:26,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2111597099, now seen corresponding path program 1 times [2022-01-10 12:25:26,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:26,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951279213] [2022-01-10 12:25:26,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:26,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:26,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:26,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:26,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951279213] [2022-01-10 12:25:26,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951279213] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:26,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:26,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:25:26,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841694357] [2022-01-10 12:25:26,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:26,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 12:25:26,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:26,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 12:25:26,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:25:26,377 INFO L87 Difference]: Start difference. First operand 345 states and 434 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:26,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:26,605 INFO L93 Difference]: Finished difference Result 943 states and 1187 transitions. [2022-01-10 12:25:26,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:25:26,606 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 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 39 [2022-01-10 12:25:26,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:26,609 INFO L225 Difference]: With dead ends: 943 [2022-01-10 12:25:26,609 INFO L226 Difference]: Without dead ends: 605 [2022-01-10 12:25:26,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:25:26,612 INFO L933 BasicCegarLoop]: 318 mSDtfsCounter, 207 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:26,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 1685 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:26,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-01-10 12:25:26,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 599. [2022-01-10 12:25:26,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 596 states have (on average 1.25503355704698) internal successors, (748), 598 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:26,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 748 transitions. [2022-01-10 12:25:26,675 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 748 transitions. Word has length 39 [2022-01-10 12:25:26,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:26,676 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 748 transitions. [2022-01-10 12:25:26,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:26,677 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 748 transitions. [2022-01-10 12:25:26,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 12:25:26,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:26,678 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] [2022-01-10 12:25:26,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:25:26,678 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:26,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:26,680 INFO L85 PathProgramCache]: Analyzing trace with hash 749264407, now seen corresponding path program 1 times [2022-01-10 12:25:26,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:26,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007374925] [2022-01-10 12:25:26,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:26,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:26,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:26,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007374925] [2022-01-10 12:25:26,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007374925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:26,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:26,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:25:26,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656340906] [2022-01-10 12:25:26,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:26,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:26,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:26,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:26,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:25:26,747 INFO L87 Difference]: Start difference. First operand 599 states and 748 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:26,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:26,949 INFO L93 Difference]: Finished difference Result 1789 states and 2251 transitions. [2022-01-10 12:25:26,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:25:26,950 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2022-01-10 12:25:26,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:26,956 INFO L225 Difference]: With dead ends: 1789 [2022-01-10 12:25:26,956 INFO L226 Difference]: Without dead ends: 1347 [2022-01-10 12:25:26,957 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 [2022-01-10 12:25:26,958 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 683 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:26,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 1284 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:26,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1347 states. [2022-01-10 12:25:27,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1347 to 617. [2022-01-10 12:25:27,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 614 states have (on average 1.247557003257329) internal successors, (766), 616 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:27,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 766 transitions. [2022-01-10 12:25:27,021 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 766 transitions. Word has length 39 [2022-01-10 12:25:27,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:27,021 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 766 transitions. [2022-01-10 12:25:27,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:27,021 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 766 transitions. [2022-01-10 12:25:27,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-01-10 12:25:27,022 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:27,022 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] [2022-01-10 12:25:27,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:25:27,023 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:27,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:27,024 INFO L85 PathProgramCache]: Analyzing trace with hash -758287402, now seen corresponding path program 1 times [2022-01-10 12:25:27,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:27,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007079994] [2022-01-10 12:25:27,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:27,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:27,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:27,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007079994] [2022-01-10 12:25:27,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007079994] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:27,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:27,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:25:27,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396506444] [2022-01-10 12:25:27,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:27,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:25:27,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:27,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:25:27,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:25:27,070 INFO L87 Difference]: Start difference. First operand 617 states and 766 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:27,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:27,232 INFO L93 Difference]: Finished difference Result 1229 states and 1538 transitions. [2022-01-10 12:25:27,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:25:27,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 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 39 [2022-01-10 12:25:27,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:27,236 INFO L225 Difference]: With dead ends: 1229 [2022-01-10 12:25:27,236 INFO L226 Difference]: Without dead ends: 769 [2022-01-10 12:25:27,237 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 [2022-01-10 12:25:27,239 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 364 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:27,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 716 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:27,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-01-10 12:25:27,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 593. [2022-01-10 12:25:27,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 590 states have (on average 1.2372881355932204) internal successors, (730), 592 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:27,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 730 transitions. [2022-01-10 12:25:27,306 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 730 transitions. Word has length 39 [2022-01-10 12:25:27,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:27,306 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 730 transitions. [2022-01-10 12:25:27,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:27,306 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 730 transitions. [2022-01-10 12:25:27,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 12:25:27,308 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:27,308 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] [2022-01-10 12:25:27,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:25:27,308 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:27,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:27,309 INFO L85 PathProgramCache]: Analyzing trace with hash -604714544, now seen corresponding path program 1 times [2022-01-10 12:25:27,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:27,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111909928] [2022-01-10 12:25:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:27,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:27,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:27,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:27,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111909928] [2022-01-10 12:25:27,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111909928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:27,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:27,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:25:27,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128281834] [2022-01-10 12:25:27,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:27,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:25:27,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:27,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:25:27,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:25:27,400 INFO L87 Difference]: Start difference. First operand 593 states and 730 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:27,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:27,861 INFO L93 Difference]: Finished difference Result 2954 states and 3611 transitions. [2022-01-10 12:25:27,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 12:25:27,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 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 42 [2022-01-10 12:25:27,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:27,870 INFO L225 Difference]: With dead ends: 2954 [2022-01-10 12:25:27,870 INFO L226 Difference]: Without dead ends: 2368 [2022-01-10 12:25:27,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:25:27,873 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 1390 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:27,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1390 Valid, 1724 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:25:27,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2368 states. [2022-01-10 12:25:27,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2368 to 1110. [2022-01-10 12:25:27,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1110 states, 1107 states have (on average 1.2222222222222223) internal successors, (1353), 1109 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:27,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1353 transitions. [2022-01-10 12:25:27,998 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1353 transitions. Word has length 42 [2022-01-10 12:25:27,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:27,998 INFO L470 AbstractCegarLoop]: Abstraction has 1110 states and 1353 transitions. [2022-01-10 12:25:27,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:27,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1353 transitions. [2022-01-10 12:25:27,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 12:25:27,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:27,999 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] [2022-01-10 12:25:27,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:25:28,000 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:28,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:28,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1803818017, now seen corresponding path program 1 times [2022-01-10 12:25:28,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:28,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457835152] [2022-01-10 12:25:28,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:28,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:28,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:28,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:28,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:28,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457835152] [2022-01-10 12:25:28,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457835152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:28,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:28,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:25:28,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613213358] [2022-01-10 12:25:28,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:28,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:28,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:28,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:28,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:25:28,051 INFO L87 Difference]: Start difference. First operand 1110 states and 1353 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:28,465 INFO L93 Difference]: Finished difference Result 3159 states and 3866 transitions. [2022-01-10 12:25:28,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:25:28,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 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 43 [2022-01-10 12:25:28,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:28,473 INFO L225 Difference]: With dead ends: 3159 [2022-01-10 12:25:28,473 INFO L226 Difference]: Without dead ends: 2056 [2022-01-10 12:25:28,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:25:28,475 INFO L933 BasicCegarLoop]: 483 mSDtfsCounter, 497 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:28,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 1531 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:28,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2022-01-10 12:25:28,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 922. [2022-01-10 12:25:28,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 922 states, 919 states have (on average 1.1969532100108813) internal successors, (1100), 921 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 922 states to 922 states and 1100 transitions. [2022-01-10 12:25:28,583 INFO L78 Accepts]: Start accepts. Automaton has 922 states and 1100 transitions. Word has length 43 [2022-01-10 12:25:28,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:28,583 INFO L470 AbstractCegarLoop]: Abstraction has 922 states and 1100 transitions. [2022-01-10 12:25:28,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:28,583 INFO L276 IsEmpty]: Start isEmpty. Operand 922 states and 1100 transitions. [2022-01-10 12:25:28,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-01-10 12:25:28,584 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:28,584 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] [2022-01-10 12:25:28,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:25:28,585 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:28,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:28,585 INFO L85 PathProgramCache]: Analyzing trace with hash 891567817, now seen corresponding path program 1 times [2022-01-10 12:25:28,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:28,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646939307] [2022-01-10 12:25:28,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:28,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:28,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:28,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:28,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646939307] [2022-01-10 12:25:28,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646939307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:28,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:28,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:25:28,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084206761] [2022-01-10 12:25:28,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:28,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:28,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:28,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:28,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:25:28,659 INFO L87 Difference]: Start difference. First operand 922 states and 1100 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:28,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:28,945 INFO L93 Difference]: Finished difference Result 2491 states and 2953 transitions. [2022-01-10 12:25:28,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 12:25:28,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 44 [2022-01-10 12:25:28,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:28,951 INFO L225 Difference]: With dead ends: 2491 [2022-01-10 12:25:28,951 INFO L226 Difference]: Without dead ends: 1406 [2022-01-10 12:25:28,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:25:28,953 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 455 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1009 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:28,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 1009 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:28,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2022-01-10 12:25:29,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 696. [2022-01-10 12:25:29,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 693 states have (on average 1.1774891774891776) internal successors, (816), 695 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:29,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 816 transitions. [2022-01-10 12:25:29,052 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 816 transitions. Word has length 44 [2022-01-10 12:25:29,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:29,053 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 816 transitions. [2022-01-10 12:25:29,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:29,053 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 816 transitions. [2022-01-10 12:25:29,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 12:25:29,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:29,054 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] [2022-01-10 12:25:29,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:25:29,054 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:29,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:29,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1048102317, now seen corresponding path program 1 times [2022-01-10 12:25:29,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:29,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563151306] [2022-01-10 12:25:29,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:29,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:29,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:29,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563151306] [2022-01-10 12:25:29,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563151306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:29,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:29,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:25:29,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561542457] [2022-01-10 12:25:29,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:29,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:25:29,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:29,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:25:29,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:25:29,124 INFO L87 Difference]: Start difference. First operand 696 states and 816 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:29,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:29,237 INFO L93 Difference]: Finished difference Result 696 states and 816 transitions. [2022-01-10 12:25:29,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:25:29,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 61 [2022-01-10 12:25:29,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:29,240 INFO L225 Difference]: With dead ends: 696 [2022-01-10 12:25:29,240 INFO L226 Difference]: Without dead ends: 531 [2022-01-10 12:25:29,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:25:29,241 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 35 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 80 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 [2022-01-10 12:25:29,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 80 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:25:29,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2022-01-10 12:25:29,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 531. [2022-01-10 12:25:29,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.1849056603773584) internal successors, (628), 530 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:29,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 628 transitions. [2022-01-10 12:25:29,329 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 628 transitions. Word has length 61 [2022-01-10 12:25:29,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:29,330 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 628 transitions. [2022-01-10 12:25:29,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:29,330 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 628 transitions. [2022-01-10 12:25:29,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 12:25:29,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:29,331 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 12:25:29,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:25:29,331 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:29,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:29,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1054779620, now seen corresponding path program 1 times [2022-01-10 12:25:29,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:29,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896194729] [2022-01-10 12:25:29,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:29,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 12:25:29,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:29,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896194729] [2022-01-10 12:25:29,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896194729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:29,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:29,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:25:29,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138907024] [2022-01-10 12:25:29,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:29,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:29,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:29,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:29,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:25:29,382 INFO L87 Difference]: Start difference. First operand 531 states and 628 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:29,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:29,535 INFO L93 Difference]: Finished difference Result 1377 states and 1626 transitions. [2022-01-10 12:25:29,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:25:29,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 12:25:29,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:29,538 INFO L225 Difference]: With dead ends: 1377 [2022-01-10 12:25:29,538 INFO L226 Difference]: Without dead ends: 853 [2022-01-10 12:25:29,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:25:29,540 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 244 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:29,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 373 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:25:29,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-01-10 12:25:29,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 531. [2022-01-10 12:25:29,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 530 states have (on average 1.1716981132075472) internal successors, (621), 530 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:29,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 621 transitions. [2022-01-10 12:25:29,632 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 621 transitions. Word has length 67 [2022-01-10 12:25:29,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:29,632 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 621 transitions. [2022-01-10 12:25:29,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:29,632 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 621 transitions. [2022-01-10 12:25:29,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 12:25:29,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:29,633 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 12:25:29,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:25:29,634 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:29,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:29,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1573548722, now seen corresponding path program 1 times [2022-01-10 12:25:29,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:29,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691042387] [2022-01-10 12:25:29,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:29,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:29,690 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-10 12:25:29,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:29,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691042387] [2022-01-10 12:25:29,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691042387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:29,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:29,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:25:29,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378548936] [2022-01-10 12:25:29,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:29,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:25:29,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:29,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:25:29,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:25:29,692 INFO L87 Difference]: Start difference. First operand 531 states and 621 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:29,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:29,873 INFO L93 Difference]: Finished difference Result 1308 states and 1561 transitions. [2022-01-10 12:25:29,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:25:29,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-01-10 12:25:29,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:29,877 INFO L225 Difference]: With dead ends: 1308 [2022-01-10 12:25:29,877 INFO L226 Difference]: Without dead ends: 905 [2022-01-10 12:25:29,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-10 12:25:29,879 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 215 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 703 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:29,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 703 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:25:29,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-01-10 12:25:29,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 529. [2022-01-10 12:25:29,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 528 states have (on average 1.168560606060606) internal successors, (617), 528 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 617 transitions. [2022-01-10 12:25:29,951 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 617 transitions. Word has length 69 [2022-01-10 12:25:29,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:29,951 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 617 transitions. [2022-01-10 12:25:29,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:29,951 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 617 transitions. [2022-01-10 12:25:29,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 12:25:29,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:29,953 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 12:25:29,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:25:29,953 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:29,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:29,953 INFO L85 PathProgramCache]: Analyzing trace with hash 2071194809, now seen corresponding path program 1 times [2022-01-10 12:25:29,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:29,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908921429] [2022-01-10 12:25:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:29,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:30,010 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-01-10 12:25:30,011 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:30,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908921429] [2022-01-10 12:25:30,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908921429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:30,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:30,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:25:30,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559193455] [2022-01-10 12:25:30,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:30,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:25:30,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:30,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:25:30,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:25:30,012 INFO L87 Difference]: Start difference. First operand 529 states and 617 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:30,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:30,290 INFO L93 Difference]: Finished difference Result 1544 states and 1819 transitions. [2022-01-10 12:25:30,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-10 12:25:30,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 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 98 [2022-01-10 12:25:30,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:30,294 INFO L225 Difference]: With dead ends: 1544 [2022-01-10 12:25:30,294 INFO L226 Difference]: Without dead ends: 1113 [2022-01-10 12:25:30,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-01-10 12:25:30,295 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 455 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:30,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 776 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:30,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1113 states. [2022-01-10 12:25:30,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1113 to 491. [2022-01-10 12:25:30,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 490 states have (on average 1.1673469387755102) internal successors, (572), 490 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:30,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 572 transitions. [2022-01-10 12:25:30,379 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 572 transitions. Word has length 98 [2022-01-10 12:25:30,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:30,379 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 572 transitions. [2022-01-10 12:25:30,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:30,379 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 572 transitions. [2022-01-10 12:25:30,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 12:25:30,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:30,381 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 12:25:30,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:25:30,381 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:30,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:30,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1647220263, now seen corresponding path program 1 times [2022-01-10 12:25:30,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:30,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780229735] [2022-01-10 12:25:30,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:30,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:30,518 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-01-10 12:25:30,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:30,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780229735] [2022-01-10 12:25:30,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780229735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:30,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:30,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:25:30,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949773327] [2022-01-10 12:25:30,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:30,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:25:30,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:30,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:25:30,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:25:30,522 INFO L87 Difference]: Start difference. First operand 491 states and 572 transitions. Second operand has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:30,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:30,890 INFO L93 Difference]: Finished difference Result 1806 states and 2136 transitions. [2022-01-10 12:25:30,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 12:25:30,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 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 100 [2022-01-10 12:25:30,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:30,896 INFO L225 Difference]: With dead ends: 1806 [2022-01-10 12:25:30,896 INFO L226 Difference]: Without dead ends: 1562 [2022-01-10 12:25:30,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-01-10 12:25:30,897 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 397 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:30,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 1029 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:30,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1562 states. [2022-01-10 12:25:31,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1562 to 706. [2022-01-10 12:25:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 1.1588652482269504) internal successors, (817), 705 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:31,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 817 transitions. [2022-01-10 12:25:31,005 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 817 transitions. Word has length 100 [2022-01-10 12:25:31,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:31,006 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 817 transitions. [2022-01-10 12:25:31,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.0) internal successors, (84), 5 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:31,006 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 817 transitions. [2022-01-10 12:25:31,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 12:25:31,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:31,007 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:25:31,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:25:31,008 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:31,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:31,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1309910695, now seen corresponding path program 1 times [2022-01-10 12:25:31,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:31,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484178093] [2022-01-10 12:25:31,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:31,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-01-10 12:25:31,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:31,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484178093] [2022-01-10 12:25:31,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484178093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:25:31,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:25:31,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:25:31,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631230514] [2022-01-10 12:25:31,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:31,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:31,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:31,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:31,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:25:31,066 INFO L87 Difference]: Start difference. First operand 706 states and 817 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:31,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:31,178 INFO L93 Difference]: Finished difference Result 1345 states and 1570 transitions. [2022-01-10 12:25:31,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:25:31,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 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 100 [2022-01-10 12:25:31,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:31,181 INFO L225 Difference]: With dead ends: 1345 [2022-01-10 12:25:31,181 INFO L226 Difference]: Without dead ends: 646 [2022-01-10 12:25:31,182 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 [2022-01-10 12:25:31,182 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 122 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:31,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 300 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:25:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2022-01-10 12:25:31,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 511. [2022-01-10 12:25:31,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 510 states have (on average 1.1549019607843136) internal successors, (589), 510 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:31,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 589 transitions. [2022-01-10 12:25:31,261 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 589 transitions. Word has length 100 [2022-01-10 12:25:31,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:31,261 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 589 transitions. [2022-01-10 12:25:31,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:31,261 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 589 transitions. [2022-01-10 12:25:31,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-10 12:25:31,262 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:25:31,262 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:25:31,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:25:31,263 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:25:31,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:25:31,263 INFO L85 PathProgramCache]: Analyzing trace with hash 711268900, now seen corresponding path program 1 times [2022-01-10 12:25:31,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:25:31,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374482401] [2022-01-10 12:25:31,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:31,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:25:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:31,457 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 42 proven. 16 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-01-10 12:25:31,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:25:31,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374482401] [2022-01-10 12:25:31,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374482401] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 12:25:31,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731978897] [2022-01-10 12:25:31,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:25:31,458 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 12:25:31,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:25:31,459 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) [2022-01-10 12:25:31,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 12:25:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:25:31,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 18 conjunts are in the unsatisfiable core [2022-01-10 12:25:31,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 12:25:31,958 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-01-10 12:25:31,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 12:25:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-01-10 12:25:32,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731978897] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 12:25:32,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 12:25:32,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 17 [2022-01-10 12:25:32,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75777804] [2022-01-10 12:25:32,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:25:32,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:25:32,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:25:32,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:25:32,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-01-10 12:25:32,145 INFO L87 Difference]: Start difference. First operand 511 states and 589 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:32,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:25:32,543 INFO L93 Difference]: Finished difference Result 2155 states and 2498 transitions. [2022-01-10 12:25:32,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:25:32,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 102 [2022-01-10 12:25:32,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:25:32,544 INFO L225 Difference]: With dead ends: 2155 [2022-01-10 12:25:32,544 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 12:25:32,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2022-01-10 12:25:32,547 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 325 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:25:32,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [325 Valid, 613 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:25:32,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 12:25:32,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 12:25:32,548 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) [2022-01-10 12:25:32,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 12:25:32,548 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 102 [2022-01-10 12:25:32,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:25:32,549 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 12:25:32,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 12:25:32,549 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 12:25:32,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 12:25:32,551 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-10 12:25:32,551 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-01-10 12:25:32,551 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2022-01-10 12:25:32,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 12:25:32,763 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,SelfDestructingSolverStorable17 [2022-01-10 12:25:32,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.