/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/email_spec1_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 12:12:23,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 12:12:23,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 12:12:23,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 12:12:23,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 12:12:23,359 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 12:12:23,362 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 12:12:23,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 12:12:23,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 12:12:23,368 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 12:12:23,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 12:12:23,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 12:12:23,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 12:12:23,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 12:12:23,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 12:12:23,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 12:12:23,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 12:12:23,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 12:12:23,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 12:12:23,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 12:12:23,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 12:12:23,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 12:12:23,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 12:12:23,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 12:12:23,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 12:12:23,419 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 12:12:23,419 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 12:12:23,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 12:12:23,420 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 12:12:23,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 12:12:23,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 12:12:23,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 12:12:23,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 12:12:23,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 12:12:23,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 12:12:23,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 12:12:23,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 12:12:23,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 12:12:23,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 12:12:23,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 12:12:23,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 12:12:23,428 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 12:12:23,457 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 12:12:23,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 12:12:23,457 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 12:12:23,457 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 12:12:23,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 12:12:23,458 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 12:12:23,458 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 12:12:23,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 12:12:23,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 12:12:23,459 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 12:12:23,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 12:12:23,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 12:12:23,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 12:12:23,463 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 12:12:23,463 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 12:12:23,475 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 12:12:23,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 12:12:23,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 12:12:23,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 12:12:23,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 12:12:23,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 12:12:23,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:12:23,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 12:12:23,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 12:12:23,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 12:12:23,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 12:12:23,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 12:12:23,477 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 12:12:23,478 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 12:12:23,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 12:12:23,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 12:12:23,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 12:12:23,479 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 12:12:23,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 12:12:23,666 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 12:12:23,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 12:12:23,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 12:12:23,687 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 12:12:23,687 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 12:12:23,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec1_product28.cil.c [2022-01-10 12:12:23,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91e7967fb/3e4796e28df241e080d403e8840756e8/FLAGf3d439257 [2022-01-10 12:12:24,248 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 12:12:24,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product28.cil.c [2022-01-10 12:12:24,275 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91e7967fb/3e4796e28df241e080d403e8840756e8/FLAGf3d439257 [2022-01-10 12:12:24,558 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91e7967fb/3e4796e28df241e080d403e8840756e8 [2022-01-10 12:12:24,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 12:12:24,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 12:12:24,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 12:12:24,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 12:12:24,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 12:12:24,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:12:24" (1/1) ... [2022-01-10 12:12:24,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@716825b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:24, skipping insertion in model container [2022-01-10 12:12:24,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:12:24" (1/1) ... [2022-01-10 12:12:24,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 12:12:24,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:12:25,111 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product28.cil.c[51091,51104] [2022-01-10 12:12:25,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:12:25,177 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 12:12:25,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 12:12:25,241 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product28.cil.c[51091,51104] [2022-01-10 12:12:25,256 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:12:25,269 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 12:12:25,364 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec1_product28.cil.c[51091,51104] [2022-01-10 12:12:25,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 12:12:25,416 INFO L208 MainTranslator]: Completed translation [2022-01-10 12:12:25,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:25 WrapperNode [2022-01-10 12:12:25,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 12:12:25,418 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 12:12:25,418 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 12:12:25,418 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 12:12:25,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:25" (1/1) ... [2022-01-10 12:12:25,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:25" (1/1) ... [2022-01-10 12:12:25,520 INFO L137 Inliner]: procedures = 130, calls = 208, calls flagged for inlining = 121, calls inlined = 145, statements flattened = 2214 [2022-01-10 12:12:25,520 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 12:12:25,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 12:12:25,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 12:12:25,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 12:12:25,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:25" (1/1) ... [2022-01-10 12:12:25,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:25" (1/1) ... [2022-01-10 12:12:25,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:25" (1/1) ... [2022-01-10 12:12:25,537 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:25" (1/1) ... [2022-01-10 12:12:25,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:25" (1/1) ... [2022-01-10 12:12:25,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:25" (1/1) ... [2022-01-10 12:12:25,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:25" (1/1) ... [2022-01-10 12:12:25,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 12:12:25,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 12:12:25,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 12:12:25,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 12:12:25,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:25" (1/1) ... [2022-01-10 12:12:25,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 12:12:25,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 12:12:25,645 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 12:12:25,651 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 12:12:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-01-10 12:12:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 12:12:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 12:12:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 12:12:25,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 12:12:25,877 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 12:12:25,879 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 12:12:27,248 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 12:12:27,264 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 12:12:27,264 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 12:12:27,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:12:27 BoogieIcfgContainer [2022-01-10 12:12:27,267 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 12:12:27,268 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 12:12:27,268 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 12:12:27,269 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 12:12:27,271 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:12:27" (1/1) ... [2022-01-10 12:12:27,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:12:27 BasicIcfg [2022-01-10 12:12:27,562 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 12:12:27,564 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 12:12:27,564 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 12:12:27,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 12:12:27,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:12:24" (1/4) ... [2022-01-10 12:12:27,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512da79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:12:27, skipping insertion in model container [2022-01-10 12:12:27,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:12:25" (2/4) ... [2022-01-10 12:12:27,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512da79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:12:27, skipping insertion in model container [2022-01-10 12:12:27,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:12:27" (3/4) ... [2022-01-10 12:12:27,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@512da79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 12:12:27, skipping insertion in model container [2022-01-10 12:12:27,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 12:12:27" (4/4) ... [2022-01-10 12:12:27,568 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product28.cil.cTransformedIcfg [2022-01-10 12:12:27,572 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 12:12:27,572 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 12:12:27,622 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 12:12:27,631 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 12:12:27,631 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 12:12:27,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 519 states, 516 states have (on average 1.699612403100775) internal successors, (877), 518 states have internal predecessors, (877), 0 states have call successors, (0), 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 12:12:27,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 12:12:27,671 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:27,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:27,672 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:27,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:27,677 INFO L85 PathProgramCache]: Analyzing trace with hash -36513217, now seen corresponding path program 1 times [2022-01-10 12:12:27,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:27,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83766518] [2022-01-10 12:12:27,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:27,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:27,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:28,069 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 12:12:28,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:28,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83766518] [2022-01-10 12:12:28,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83766518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:28,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:28,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:12:28,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33008965] [2022-01-10 12:12:28,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:28,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 12:12:28,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:28,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 12:12:28,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 12:12:28,155 INFO L87 Difference]: Start difference. First operand has 519 states, 516 states have (on average 1.699612403100775) internal successors, (877), 518 states have internal predecessors, (877), 0 states have call successors, (0), 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 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 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 12:12:28,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:28,211 INFO L93 Difference]: Finished difference Result 782 states and 1302 transitions. [2022-01-10 12:12:28,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 12:12:28,219 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 12:12:28,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:28,236 INFO L225 Difference]: With dead ends: 782 [2022-01-10 12:12:28,237 INFO L226 Difference]: Without dead ends: 436 [2022-01-10 12:12:28,243 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 12:12:28,246 INFO L933 BasicCegarLoop]: 871 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, 871 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 12:12:28,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:12:28,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-01-10 12:12:28,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 436. [2022-01-10 12:12:28,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 434 states have (on average 1.707373271889401) internal successors, (741), 435 states have internal predecessors, (741), 0 states have call successors, (0), 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 12:12:28,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 741 transitions. [2022-01-10 12:12:28,303 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 741 transitions. Word has length 52 [2022-01-10 12:12:28,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:28,303 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 741 transitions. [2022-01-10 12:12:28,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 0 states have call successors, (0), 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 12:12:28,304 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 741 transitions. [2022-01-10 12:12:28,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 12:12:28,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:28,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:28,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 12:12:28,306 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:28,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:28,306 INFO L85 PathProgramCache]: Analyzing trace with hash -14122421, now seen corresponding path program 1 times [2022-01-10 12:12:28,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:28,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087150831] [2022-01-10 12:12:28,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:28,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:28,486 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 12:12:28,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:28,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087150831] [2022-01-10 12:12:28,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087150831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:28,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:28,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 12:12:28,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666602843] [2022-01-10 12:12:28,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:28,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:12:28,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:28,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:12:28,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:12:28,489 INFO L87 Difference]: Start difference. First operand 436 states and 741 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 12:12:28,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:28,523 INFO L93 Difference]: Finished difference Result 560 states and 939 transitions. [2022-01-10 12:12:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:12:28,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-10 12:12:28,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:28,526 INFO L225 Difference]: With dead ends: 560 [2022-01-10 12:12:28,526 INFO L226 Difference]: Without dead ends: 430 [2022-01-10 12:12:28,528 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 12:12:28,530 INFO L933 BasicCegarLoop]: 731 mSDtfsCounter, 485 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:28,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 927 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:12:28,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-01-10 12:12:28,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2022-01-10 12:12:28,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.7062937062937062) internal successors, (732), 429 states have internal predecessors, (732), 0 states have call successors, (0), 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 12:12:28,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 732 transitions. [2022-01-10 12:12:28,565 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 732 transitions. Word has length 53 [2022-01-10 12:12:28,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:28,566 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 732 transitions. [2022-01-10 12:12:28,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 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 12:12:28,566 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 732 transitions. [2022-01-10 12:12:28,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-01-10 12:12:28,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:28,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 12:12:28,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 12:12:28,569 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:28,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:28,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1588207879, now seen corresponding path program 1 times [2022-01-10 12:12:28,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:28,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145967379] [2022-01-10 12:12:28,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:28,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:28,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:28,783 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 12:12:28,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:28,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145967379] [2022-01-10 12:12:28,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145967379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:28,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:28,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:12:28,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282878583] [2022-01-10 12:12:28,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:28,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:12:28,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:28,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:12:28,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:12:28,787 INFO L87 Difference]: Start difference. First operand 430 states and 732 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 12:12:28,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:28,847 INFO L93 Difference]: Finished difference Result 841 states and 1436 transitions. [2022-01-10 12:12:28,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:12:28,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 97 [2022-01-10 12:12:28,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:28,851 INFO L225 Difference]: With dead ends: 841 [2022-01-10 12:12:28,851 INFO L226 Difference]: Without dead ends: 430 [2022-01-10 12:12:28,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:12:28,857 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 707 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:28,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 727 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:12:28,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-01-10 12:12:28,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 430. [2022-01-10 12:12:28,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.7016317016317015) internal successors, (730), 429 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 12:12:28,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 730 transitions. [2022-01-10 12:12:28,902 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 730 transitions. Word has length 97 [2022-01-10 12:12:28,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:28,902 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 730 transitions. [2022-01-10 12:12:28,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 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 12:12:28,902 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 730 transitions. [2022-01-10 12:12:28,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-01-10 12:12:28,908 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:28,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:28,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 12:12:28,909 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:28,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:28,910 INFO L85 PathProgramCache]: Analyzing trace with hash -626441543, now seen corresponding path program 1 times [2022-01-10 12:12:28,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:28,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766908532] [2022-01-10 12:12:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:28,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:29,091 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 12:12:29,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:29,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766908532] [2022-01-10 12:12:29,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766908532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:29,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:29,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:12:29,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77730099] [2022-01-10 12:12:29,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:29,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:12:29,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:29,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:12:29,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:29,096 INFO L87 Difference]: Start difference. First operand 430 states and 730 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 12:12:29,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:29,306 INFO L93 Difference]: Finished difference Result 2018 states and 3446 transitions. [2022-01-10 12:12:29,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:12:29,306 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 99 [2022-01-10 12:12:29,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:29,314 INFO L225 Difference]: With dead ends: 2018 [2022-01-10 12:12:29,314 INFO L226 Difference]: Without dead ends: 1612 [2022-01-10 12:12:29,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 12:12:29,323 INFO L933 BasicCegarLoop]: 1383 mSDtfsCounter, 3433 mSDsluCounter, 2062 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3433 SdHoareTripleChecker+Valid, 3445 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:29,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3433 Valid, 3445 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:29,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2022-01-10 12:12:29,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 430. [2022-01-10 12:12:29,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.6993006993006994) internal successors, (729), 429 states have internal predecessors, (729), 0 states have call successors, (0), 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 12:12:29,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 729 transitions. [2022-01-10 12:12:29,360 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 729 transitions. Word has length 99 [2022-01-10 12:12:29,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:29,362 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 729 transitions. [2022-01-10 12:12:29,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 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 12:12:29,362 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 729 transitions. [2022-01-10 12:12:29,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 12:12:29,367 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:29,367 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:29,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 12:12:29,368 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:29,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:29,368 INFO L85 PathProgramCache]: Analyzing trace with hash -302763309, now seen corresponding path program 1 times [2022-01-10 12:12:29,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:29,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696199515] [2022-01-10 12:12:29,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:29,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:29,492 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 12:12:29,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:29,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696199515] [2022-01-10 12:12:29,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696199515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:29,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:29,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 12:12:29,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214773729] [2022-01-10 12:12:29,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:29,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 12:12:29,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:29,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 12:12:29,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 12:12:29,494 INFO L87 Difference]: Start difference. First operand 430 states and 729 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 12:12:29,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:29,538 INFO L93 Difference]: Finished difference Result 845 states and 1436 transitions. [2022-01-10 12:12:29,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 12:12:29,538 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 12:12:29,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:29,540 INFO L225 Difference]: With dead ends: 845 [2022-01-10 12:12:29,540 INFO L226 Difference]: Without dead ends: 444 [2022-01-10 12:12:29,541 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 12:12:29,542 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 708 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:29,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [708 Valid, 765 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:12:29,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2022-01-10 12:12:29,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 430. [2022-01-10 12:12:29,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.696969696969697) internal successors, (728), 429 states have internal predecessors, (728), 0 states have call successors, (0), 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 12:12:29,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 728 transitions. [2022-01-10 12:12:29,567 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 728 transitions. Word has length 100 [2022-01-10 12:12:29,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:29,567 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 728 transitions. [2022-01-10 12:12:29,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 12:12:29,567 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 728 transitions. [2022-01-10 12:12:29,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-01-10 12:12:29,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:29,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:29,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 12:12:29,569 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:29,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:29,569 INFO L85 PathProgramCache]: Analyzing trace with hash 299531418, now seen corresponding path program 1 times [2022-01-10 12:12:29,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:29,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610866635] [2022-01-10 12:12:29,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:29,570 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:29,694 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 12:12:29,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:29,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610866635] [2022-01-10 12:12:29,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610866635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:29,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:29,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:12:29,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347666005] [2022-01-10 12:12:29,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:29,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:12:29,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:29,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:12:29,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:29,696 INFO L87 Difference]: Start difference. First operand 430 states and 728 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 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 12:12:29,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:29,845 INFO L93 Difference]: Finished difference Result 1224 states and 2084 transitions. [2022-01-10 12:12:29,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:12:29,846 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-01-10 12:12:29,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:29,849 INFO L225 Difference]: With dead ends: 1224 [2022-01-10 12:12:29,850 INFO L226 Difference]: Without dead ends: 828 [2022-01-10 12:12:29,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:12:29,852 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 3356 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3356 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:29,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3356 Valid, 1488 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:29,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-01-10 12:12:29,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 430. [2022-01-10 12:12:29,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.6923076923076923) internal successors, (726), 429 states have internal predecessors, (726), 0 states have call successors, (0), 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 12:12:29,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 726 transitions. [2022-01-10 12:12:29,884 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 726 transitions. Word has length 101 [2022-01-10 12:12:29,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:29,885 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 726 transitions. [2022-01-10 12:12:29,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 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 12:12:29,885 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 726 transitions. [2022-01-10 12:12:29,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-01-10 12:12:29,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:29,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:29,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 12:12:29,886 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:29,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:29,887 INFO L85 PathProgramCache]: Analyzing trace with hash 839838519, now seen corresponding path program 1 times [2022-01-10 12:12:29,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:29,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210263357] [2022-01-10 12:12:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:29,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:30,036 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 12:12:30,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:30,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210263357] [2022-01-10 12:12:30,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210263357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:30,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:30,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:12:30,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682401073] [2022-01-10 12:12:30,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:30,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:12:30,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:30,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:12:30,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:12:30,038 INFO L87 Difference]: Start difference. First operand 430 states and 726 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 12:12:30,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:30,381 INFO L93 Difference]: Finished difference Result 2359 states and 3946 transitions. [2022-01-10 12:12:30,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:12:30,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 103 [2022-01-10 12:12:30,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:30,390 INFO L225 Difference]: With dead ends: 2359 [2022-01-10 12:12:30,390 INFO L226 Difference]: Without dead ends: 2202 [2022-01-10 12:12:30,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:12:30,392 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 4156 mSDsluCounter, 4001 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4156 SdHoareTripleChecker+Valid, 4999 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:30,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4156 Valid, 4999 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:30,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2022-01-10 12:12:30,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 804. [2022-01-10 12:12:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 1.6948941469489414) internal successors, (1361), 803 states have internal predecessors, (1361), 0 states have call successors, (0), 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 12:12:30,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1361 transitions. [2022-01-10 12:12:30,462 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1361 transitions. Word has length 103 [2022-01-10 12:12:30,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:30,462 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1361 transitions. [2022-01-10 12:12:30,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 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 12:12:30,463 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1361 transitions. [2022-01-10 12:12:30,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-01-10 12:12:30,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:30,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:30,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 12:12:30,465 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:30,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:30,465 INFO L85 PathProgramCache]: Analyzing trace with hash 767380109, now seen corresponding path program 1 times [2022-01-10 12:12:30,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:30,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658321009] [2022-01-10 12:12:30,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:30,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:30,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:30,575 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 12:12:30,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:30,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658321009] [2022-01-10 12:12:30,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658321009] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:30,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:30,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:12:30,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267650237] [2022-01-10 12:12:30,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:30,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:12:30,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:30,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:12:30,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:30,577 INFO L87 Difference]: Start difference. First operand 804 states and 1361 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 12:12:30,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:30,745 INFO L93 Difference]: Finished difference Result 2289 states and 3912 transitions. [2022-01-10 12:12:30,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:12:30,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 104 [2022-01-10 12:12:30,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:30,752 INFO L225 Difference]: With dead ends: 2289 [2022-01-10 12:12:30,752 INFO L226 Difference]: Without dead ends: 1522 [2022-01-10 12:12:30,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:12:30,754 INFO L933 BasicCegarLoop]: 1355 mSDtfsCounter, 2115 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:30,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2115 Valid, 2034 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:30,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2022-01-10 12:12:30,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 804. [2022-01-10 12:12:30,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 803 states have (on average 1.692403486924035) internal successors, (1359), 803 states have internal predecessors, (1359), 0 states have call successors, (0), 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 12:12:30,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1359 transitions. [2022-01-10 12:12:30,816 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1359 transitions. Word has length 104 [2022-01-10 12:12:30,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:30,816 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1359 transitions. [2022-01-10 12:12:30,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 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 12:12:30,816 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1359 transitions. [2022-01-10 12:12:30,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 12:12:30,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:30,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:30,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 12:12:30,818 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:30,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:30,819 INFO L85 PathProgramCache]: Analyzing trace with hash 658959529, now seen corresponding path program 1 times [2022-01-10 12:12:30,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:30,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912485130] [2022-01-10 12:12:30,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:30,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:30,988 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 12:12:30,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:30,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912485130] [2022-01-10 12:12:30,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912485130] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:30,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:30,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 12:12:30,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185342527] [2022-01-10 12:12:30,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:30,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 12:12:30,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:30,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 12:12:30,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 12:12:30,991 INFO L87 Difference]: Start difference. First operand 804 states and 1359 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 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 12:12:31,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:31,834 INFO L93 Difference]: Finished difference Result 4384 states and 7343 transitions. [2022-01-10 12:12:31,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 12:12:31,835 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-10 12:12:31,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:31,849 INFO L225 Difference]: With dead ends: 4384 [2022-01-10 12:12:31,849 INFO L226 Difference]: Without dead ends: 4114 [2022-01-10 12:12:31,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-10 12:12:31,856 INFO L933 BasicCegarLoop]: 1180 mSDtfsCounter, 3685 mSDsluCounter, 3467 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3685 SdHoareTripleChecker+Valid, 4647 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:31,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3685 Valid, 4647 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 12:12:31,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4114 states. [2022-01-10 12:12:31,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4114 to 1529. [2022-01-10 12:12:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1528 states have (on average 1.7009162303664922) internal successors, (2599), 1528 states have internal predecessors, (2599), 0 states have call successors, (0), 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 12:12:31,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 2599 transitions. [2022-01-10 12:12:31,985 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 2599 transitions. Word has length 105 [2022-01-10 12:12:31,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:31,985 INFO L470 AbstractCegarLoop]: Abstraction has 1529 states and 2599 transitions. [2022-01-10 12:12:31,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 6 states have internal predecessors, (105), 0 states have call successors, (0), 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 12:12:31,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 2599 transitions. [2022-01-10 12:12:31,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-01-10 12:12:31,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:31,989 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:31,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 12:12:31,989 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:31,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:31,990 INFO L85 PathProgramCache]: Analyzing trace with hash -421813133, now seen corresponding path program 1 times [2022-01-10 12:12:31,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:31,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665061580] [2022-01-10 12:12:31,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:31,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:32,155 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 12:12:32,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:32,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665061580] [2022-01-10 12:12:32,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665061580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:32,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:32,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:12:32,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665786562] [2022-01-10 12:12:32,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:32,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:12:32,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:32,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:12:32,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:12:32,157 INFO L87 Difference]: Start difference. First operand 1529 states and 2599 transitions. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 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 12:12:32,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:32,818 INFO L93 Difference]: Finished difference Result 4907 states and 8137 transitions. [2022-01-10 12:12:32,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:12:32,819 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 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 105 [2022-01-10 12:12:32,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:32,833 INFO L225 Difference]: With dead ends: 4907 [2022-01-10 12:12:32,833 INFO L226 Difference]: Without dead ends: 4466 [2022-01-10 12:12:32,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:12:32,836 INFO L933 BasicCegarLoop]: 859 mSDtfsCounter, 4883 mSDsluCounter, 5072 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4883 SdHoareTripleChecker+Valid, 5931 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:32,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4883 Valid, 5931 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:12:32,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4466 states. [2022-01-10 12:12:33,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4466 to 2949. [2022-01-10 12:12:33,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2948 states have (on average 1.712686567164179) internal successors, (5049), 2948 states have internal predecessors, (5049), 0 states have call successors, (0), 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 12:12:33,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 5049 transitions. [2022-01-10 12:12:33,107 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 5049 transitions. Word has length 105 [2022-01-10 12:12:33,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:33,108 INFO L470 AbstractCegarLoop]: Abstraction has 2949 states and 5049 transitions. [2022-01-10 12:12:33,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 8 states have internal predecessors, (105), 0 states have call successors, (0), 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 12:12:33,109 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 5049 transitions. [2022-01-10 12:12:33,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 12:12:33,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:33,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:33,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 12:12:33,115 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:33,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:33,115 INFO L85 PathProgramCache]: Analyzing trace with hash 946213076, now seen corresponding path program 1 times [2022-01-10 12:12:33,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:33,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399549317] [2022-01-10 12:12:33,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:33,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:33,204 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 12:12:33,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:33,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399549317] [2022-01-10 12:12:33,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399549317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:33,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:33,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:12:33,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773111673] [2022-01-10 12:12:33,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:33,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:12:33,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:33,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:12:33,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:12:33,206 INFO L87 Difference]: Start difference. First operand 2949 states and 5049 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 12:12:33,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:33,433 INFO L93 Difference]: Finished difference Result 3500 states and 5934 transitions. [2022-01-10 12:12:33,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 12:12:33,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 12:12:33,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:33,444 INFO L225 Difference]: With dead ends: 3500 [2022-01-10 12:12:33,444 INFO L226 Difference]: Without dead ends: 2949 [2022-01-10 12:12:33,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:33,446 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 559 mSDsluCounter, 883 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:33,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 1601 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:12:33,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2949 states. [2022-01-10 12:12:33,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2949 to 2949. [2022-01-10 12:12:33,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2949 states, 2948 states have (on average 1.7113297150610582) internal successors, (5045), 2948 states have internal predecessors, (5045), 0 states have call successors, (0), 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 12:12:33,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2949 states to 2949 states and 5045 transitions. [2022-01-10 12:12:33,670 INFO L78 Accepts]: Start accepts. Automaton has 2949 states and 5045 transitions. Word has length 106 [2022-01-10 12:12:33,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:33,670 INFO L470 AbstractCegarLoop]: Abstraction has 2949 states and 5045 transitions. [2022-01-10 12:12:33,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 12:12:33,671 INFO L276 IsEmpty]: Start isEmpty. Operand 2949 states and 5045 transitions. [2022-01-10 12:12:33,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-01-10 12:12:33,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:33,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:33,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 12:12:33,677 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:33,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:33,678 INFO L85 PathProgramCache]: Analyzing trace with hash 338136213, now seen corresponding path program 1 times [2022-01-10 12:12:33,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:33,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157654940] [2022-01-10 12:12:33,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:33,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:33,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:33,825 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 12:12:33,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:33,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157654940] [2022-01-10 12:12:33,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157654940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:33,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:33,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:12:33,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423649547] [2022-01-10 12:12:33,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:33,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:12:33,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:33,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:12:33,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:33,827 INFO L87 Difference]: Start difference. First operand 2949 states and 5045 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 12:12:34,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:34,416 INFO L93 Difference]: Finished difference Result 5515 states and 9137 transitions. [2022-01-10 12:12:34,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 12:12:34,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 106 [2022-01-10 12:12:34,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:34,446 INFO L225 Difference]: With dead ends: 5515 [2022-01-10 12:12:34,446 INFO L226 Difference]: Without dead ends: 4880 [2022-01-10 12:12:34,449 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 12:12:34,450 INFO L933 BasicCegarLoop]: 1220 mSDtfsCounter, 1346 mSDsluCounter, 2537 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 3757 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:34,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1346 Valid, 3757 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:34,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4880 states. [2022-01-10 12:12:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4880 to 3179. [2022-01-10 12:12:34,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 3178 states have (on average 1.7001258653241031) internal successors, (5403), 3178 states have internal predecessors, (5403), 0 states have call successors, (0), 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 12:12:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 5403 transitions. [2022-01-10 12:12:34,734 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 5403 transitions. Word has length 106 [2022-01-10 12:12:34,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:34,735 INFO L470 AbstractCegarLoop]: Abstraction has 3179 states and 5403 transitions. [2022-01-10 12:12:34,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 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 12:12:34,735 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 5403 transitions. [2022-01-10 12:12:34,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 12:12:34,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:34,743 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:34,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 12:12:34,743 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:34,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:34,744 INFO L85 PathProgramCache]: Analyzing trace with hash 466216058, now seen corresponding path program 1 times [2022-01-10 12:12:34,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:34,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386130055] [2022-01-10 12:12:34,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:34,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:34,906 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 12:12:34,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:34,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386130055] [2022-01-10 12:12:34,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386130055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:34,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:34,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 12:12:34,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425657021] [2022-01-10 12:12:34,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:34,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 12:12:34,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:34,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 12:12:34,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:12:34,908 INFO L87 Difference]: Start difference. First operand 3179 states and 5403 transitions. Second operand has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 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 12:12:35,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:35,952 INFO L93 Difference]: Finished difference Result 9395 states and 15532 transitions. [2022-01-10 12:12:35,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 12:12:35,954 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 12:12:35,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:35,972 INFO L225 Difference]: With dead ends: 9395 [2022-01-10 12:12:35,972 INFO L226 Difference]: Without dead ends: 8512 [2022-01-10 12:12:35,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-10 12:12:35,977 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 4738 mSDsluCounter, 4799 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4738 SdHoareTripleChecker+Valid, 5483 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:35,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4738 Valid, 5483 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 12:12:35,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8512 states. [2022-01-10 12:12:36,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8512 to 6060. [2022-01-10 12:12:36,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6060 states, 6059 states have (on average 1.7080376299719426) internal successors, (10349), 6059 states have internal predecessors, (10349), 0 states have call successors, (0), 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 12:12:36,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6060 states to 6060 states and 10349 transitions. [2022-01-10 12:12:36,484 INFO L78 Accepts]: Start accepts. Automaton has 6060 states and 10349 transitions. Word has length 107 [2022-01-10 12:12:36,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:36,484 INFO L470 AbstractCegarLoop]: Abstraction has 6060 states and 10349 transitions. [2022-01-10 12:12:36,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.88888888888889) internal successors, (107), 8 states have internal predecessors, (107), 0 states have call successors, (0), 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 12:12:36,485 INFO L276 IsEmpty]: Start isEmpty. Operand 6060 states and 10349 transitions. [2022-01-10 12:12:36,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-01-10 12:12:36,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:36,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:36,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 12:12:36,496 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:36,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:36,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1464403047, now seen corresponding path program 1 times [2022-01-10 12:12:36,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:36,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979927885] [2022-01-10 12:12:36,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:36,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:36,643 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 12:12:36,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:36,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979927885] [2022-01-10 12:12:36,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979927885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:36,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:36,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:12:36,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390699402] [2022-01-10 12:12:36,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:36,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:12:36,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:36,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:12:36,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:36,645 INFO L87 Difference]: Start difference. First operand 6060 states and 10349 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 12:12:38,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:38,019 INFO L93 Difference]: Finished difference Result 13028 states and 21013 transitions. [2022-01-10 12:12:38,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 12:12:38,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 107 [2022-01-10 12:12:38,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:38,044 INFO L225 Difference]: With dead ends: 13028 [2022-01-10 12:12:38,045 INFO L226 Difference]: Without dead ends: 12188 [2022-01-10 12:12:38,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 12:12:38,052 INFO L933 BasicCegarLoop]: 722 mSDtfsCounter, 1635 mSDsluCounter, 2096 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1635 SdHoareTripleChecker+Valid, 2818 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:38,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1635 Valid, 2818 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:38,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12188 states. [2022-01-10 12:12:38,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12188 to 6872. [2022-01-10 12:12:38,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6872 states, 6871 states have (on average 1.6895648377237666) internal successors, (11609), 6871 states have internal predecessors, (11609), 0 states have call successors, (0), 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 12:12:38,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6872 states to 6872 states and 11609 transitions. [2022-01-10 12:12:38,736 INFO L78 Accepts]: Start accepts. Automaton has 6872 states and 11609 transitions. Word has length 107 [2022-01-10 12:12:38,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:38,736 INFO L470 AbstractCegarLoop]: Abstraction has 6872 states and 11609 transitions. [2022-01-10 12:12:38,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 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 12:12:38,736 INFO L276 IsEmpty]: Start isEmpty. Operand 6872 states and 11609 transitions. [2022-01-10 12:12:38,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 12:12:38,750 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:38,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:38,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 12:12:38,751 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:38,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:38,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1221048307, now seen corresponding path program 1 times [2022-01-10 12:12:38,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:38,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439298436] [2022-01-10 12:12:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:38,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:38,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:38,905 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 12:12:38,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:38,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439298436] [2022-01-10 12:12:38,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439298436] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:38,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:38,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 12:12:38,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103859312] [2022-01-10 12:12:38,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:38,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:12:38,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:38,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:12:38,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:38,907 INFO L87 Difference]: Start difference. First operand 6872 states and 11609 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 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 12:12:39,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:39,590 INFO L93 Difference]: Finished difference Result 8400 states and 13736 transitions. [2022-01-10 12:12:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 12:12:39,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-10 12:12:39,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:39,617 INFO L225 Difference]: With dead ends: 8400 [2022-01-10 12:12:39,618 INFO L226 Difference]: Without dead ends: 8056 [2022-01-10 12:12:39,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 12:12:39,628 INFO L933 BasicCegarLoop]: 811 mSDtfsCounter, 574 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:39,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 3100 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:12:39,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8056 states. [2022-01-10 12:12:40,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8056 to 6904. [2022-01-10 12:12:40,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 6903 states have (on average 1.6863682456902795) internal successors, (11641), 6903 states have internal predecessors, (11641), 0 states have call successors, (0), 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 12:12:40,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 11641 transitions. [2022-01-10 12:12:40,178 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 11641 transitions. Word has length 108 [2022-01-10 12:12:40,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:40,179 INFO L470 AbstractCegarLoop]: Abstraction has 6904 states and 11641 transitions. [2022-01-10 12:12:40,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 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 12:12:40,179 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 11641 transitions. [2022-01-10 12:12:40,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-01-10 12:12:40,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:40,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:40,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 12:12:40,194 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:40,194 INFO L85 PathProgramCache]: Analyzing trace with hash 781212819, now seen corresponding path program 1 times [2022-01-10 12:12:40,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:40,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482491623] [2022-01-10 12:12:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:40,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:40,327 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 12:12:40,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:40,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482491623] [2022-01-10 12:12:40,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482491623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:40,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:40,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-10 12:12:40,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719455033] [2022-01-10 12:12:40,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:40,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 12:12:40,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:40,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 12:12:40,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-01-10 12:12:40,329 INFO L87 Difference]: Start difference. First operand 6904 states and 11641 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 12:12:41,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:41,105 INFO L93 Difference]: Finished difference Result 8924 states and 14689 transitions. [2022-01-10 12:12:41,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 12:12:41,106 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2022-01-10 12:12:41,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:41,123 INFO L225 Difference]: With dead ends: 8924 [2022-01-10 12:12:41,124 INFO L226 Difference]: Without dead ends: 7412 [2022-01-10 12:12:41,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2022-01-10 12:12:41,128 INFO L933 BasicCegarLoop]: 699 mSDtfsCounter, 1781 mSDsluCounter, 4010 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 4709 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:41,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1781 Valid, 4709 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:41,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7412 states. [2022-01-10 12:12:41,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7412 to 6904. [2022-01-10 12:12:41,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 6903 states have (on average 1.6794147472113574) internal successors, (11593), 6903 states have internal predecessors, (11593), 0 states have call successors, (0), 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 12:12:41,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 11593 transitions. [2022-01-10 12:12:41,815 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 11593 transitions. Word has length 108 [2022-01-10 12:12:41,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:41,816 INFO L470 AbstractCegarLoop]: Abstraction has 6904 states and 11593 transitions. [2022-01-10 12:12:41,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 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 12:12:41,816 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 11593 transitions. [2022-01-10 12:12:41,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 12:12:41,828 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:41,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:41,828 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 12:12:41,829 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:41,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:41,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1372956089, now seen corresponding path program 1 times [2022-01-10 12:12:41,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:41,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750052707] [2022-01-10 12:12:41,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:41,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:41,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:41,935 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 12:12:41,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:41,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750052707] [2022-01-10 12:12:41,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750052707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:41,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:41,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:12:41,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334935552] [2022-01-10 12:12:41,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:41,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 12:12:41,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:41,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 12:12:41,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 12:12:41,938 INFO L87 Difference]: Start difference. First operand 6904 states and 11593 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 12:12:43,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:43,202 INFO L93 Difference]: Finished difference Result 13509 states and 21497 transitions. [2022-01-10 12:12:43,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:12:43,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-10 12:12:43,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:43,225 INFO L225 Difference]: With dead ends: 13509 [2022-01-10 12:12:43,225 INFO L226 Difference]: Without dead ends: 10881 [2022-01-10 12:12:43,231 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:43,232 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 542 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:43,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 2224 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 12:12:43,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10881 states. [2022-01-10 12:12:43,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10881 to 6946. [2022-01-10 12:12:43,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6946 states, 6945 states have (on average 1.6753059755219581) internal successors, (11635), 6945 states have internal predecessors, (11635), 0 states have call successors, (0), 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 12:12:43,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 11635 transitions. [2022-01-10 12:12:43,981 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 11635 transitions. Word has length 111 [2022-01-10 12:12:43,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:43,981 INFO L470 AbstractCegarLoop]: Abstraction has 6946 states and 11635 transitions. [2022-01-10 12:12:43,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 12:12:43,982 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 11635 transitions. [2022-01-10 12:12:43,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-01-10 12:12:43,996 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 12:12:43,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:12:43,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 12:12:43,996 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 12:12:43,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 12:12:43,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1040981970, now seen corresponding path program 1 times [2022-01-10 12:12:43,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 12:12:43,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924385087] [2022-01-10 12:12:43,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 12:12:43,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 12:12:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 12:12:44,138 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 12:12:44,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 12:12:44,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924385087] [2022-01-10 12:12:44,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924385087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 12:12:44,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 12:12:44,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 12:12:44,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433138442] [2022-01-10 12:12:44,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 12:12:44,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 12:12:44,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 12:12:44,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 12:12:44,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 12:12:44,140 INFO L87 Difference]: Start difference. First operand 6946 states and 11635 transitions. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 12:12:44,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 12:12:44,854 INFO L93 Difference]: Finished difference Result 6946 states and 11635 transitions. [2022-01-10 12:12:44,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 12:12:44,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2022-01-10 12:12:44,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 12:12:44,855 INFO L225 Difference]: With dead ends: 6946 [2022-01-10 12:12:44,855 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 12:12:44,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 12:12:44,865 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 557 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 12:12:44,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 1916 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 12:12:44,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 12:12:44,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 12:12:44,865 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 12:12:44,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 12:12:44,866 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 111 [2022-01-10 12:12:44,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 12:12:44,866 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 12:12:44,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 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 12:12:44,866 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 12:12:44,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 12:12:44,869 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-01-10 12:12:44,869 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-01-10 12:12:44,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 12:12:44,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.